diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index c8b287f90..1a16472bd 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -237,79 +237,6 @@ RSpec/AnyInstance:
     - 'spec/workers/activitypub/delivery_worker_spec.rb'
     - 'spec/workers/web/push_notification_worker_spec.rb'
 
-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: SkipBlocks, EnforcedStyle.
-# SupportedStyles: described_class, explicit
-RSpec/DescribedClass:
-  Exclude:
-    - 'spec/controllers/concerns/cache_concern_spec.rb'
-    - 'spec/controllers/concerns/challengable_concern_spec.rb'
-    - 'spec/lib/entity_cache_spec.rb'
-    - 'spec/lib/extractor_spec.rb'
-    - 'spec/lib/feed_manager_spec.rb'
-    - 'spec/lib/hash_object_spec.rb'
-    - 'spec/lib/ostatus/tag_manager_spec.rb'
-    - 'spec/lib/request_spec.rb'
-    - 'spec/lib/tag_manager_spec.rb'
-    - 'spec/lib/webfinger_resource_spec.rb'
-    - 'spec/mailers/notification_mailer_spec.rb'
-    - 'spec/mailers/user_mailer_spec.rb'
-    - 'spec/models/account_conversation_spec.rb'
-    - 'spec/models/account_domain_block_spec.rb'
-    - 'spec/models/account_migration_spec.rb'
-    - 'spec/models/account_spec.rb'
-    - 'spec/models/block_spec.rb'
-    - 'spec/models/domain_block_spec.rb'
-    - 'spec/models/email_domain_block_spec.rb'
-    - 'spec/models/export_spec.rb'
-    - 'spec/models/favourite_spec.rb'
-    - 'spec/models/follow_spec.rb'
-    - 'spec/models/identity_spec.rb'
-    - 'spec/models/import_spec.rb'
-    - 'spec/models/media_attachment_spec.rb'
-    - 'spec/models/notification_spec.rb'
-    - 'spec/models/relationship_filter_spec.rb'
-    - 'spec/models/report_filter_spec.rb'
-    - 'spec/models/session_activation_spec.rb'
-    - 'spec/models/setting_spec.rb'
-    - 'spec/models/site_upload_spec.rb'
-    - 'spec/models/status_pin_spec.rb'
-    - 'spec/models/status_spec.rb'
-    - 'spec/models/user_spec.rb'
-    - 'spec/policies/account_moderation_note_policy_spec.rb'
-    - 'spec/presenters/account_relationships_presenter_spec.rb'
-    - 'spec/presenters/status_relationships_presenter_spec.rb'
-    - 'spec/serializers/activitypub/note_serializer_spec.rb'
-    - 'spec/serializers/activitypub/update_poll_serializer_spec.rb'
-    - 'spec/serializers/rest/account_serializer_spec.rb'
-    - 'spec/services/activitypub/fetch_remote_account_service_spec.rb'
-    - 'spec/services/activitypub/fetch_remote_actor_service_spec.rb'
-    - 'spec/services/activitypub/fetch_remote_key_service_spec.rb'
-    - 'spec/services/after_block_domain_from_account_service_spec.rb'
-    - 'spec/services/authorize_follow_service_spec.rb'
-    - 'spec/services/batched_remove_status_service_spec.rb'
-    - 'spec/services/block_domain_service_spec.rb'
-    - 'spec/services/block_service_spec.rb'
-    - 'spec/services/bootstrap_timeline_service_spec.rb'
-    - 'spec/services/clear_domain_media_service_spec.rb'
-    - 'spec/services/favourite_service_spec.rb'
-    - 'spec/services/follow_service_spec.rb'
-    - 'spec/services/import_service_spec.rb'
-    - 'spec/services/post_status_service_spec.rb'
-    - 'spec/services/precompute_feed_service_spec.rb'
-    - 'spec/services/process_mentions_service_spec.rb'
-    - 'spec/services/purge_domain_service_spec.rb'
-    - 'spec/services/reblog_service_spec.rb'
-    - 'spec/services/reject_follow_service_spec.rb'
-    - 'spec/services/remove_from_followers_service_spec.rb'
-    - 'spec/services/remove_status_service_spec.rb'
-    - 'spec/services/unallow_domain_service_spec.rb'
-    - 'spec/services/unblock_service_spec.rb'
-    - 'spec/services/unfollow_service_spec.rb'
-    - 'spec/services/unmute_service_spec.rb'
-    - 'spec/services/update_account_service_spec.rb'
-    - 'spec/validators/note_length_validator_spec.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 RSpec/EmptyExampleGroup:
   Exclude:
diff --git a/spec/controllers/.rubocop.yml b/spec/controllers/.rubocop.yml
new file mode 100644
index 000000000..525479be8
--- /dev/null
+++ b/spec/controllers/.rubocop.yml
@@ -0,0 +1,6 @@
+inherit_from: ../../.rubocop.yml
+
+# Anonymous controllers in specs cannot access described_class
+# https://github.com/rubocop/rubocop-rspec/blob/master/lib/rubocop/cop/rspec/described_class.rb#L36-L39
+RSpec/DescribedClass:
+  SkipBlocks: true
diff --git a/spec/lib/entity_cache_spec.rb b/spec/lib/entity_cache_spec.rb
index 6d9afa474..5818de711 100644
--- a/spec/lib/entity_cache_spec.rb
+++ b/spec/lib/entity_cache_spec.rb
@@ -7,7 +7,7 @@ RSpec.describe EntityCache do
   let(:remote_account) { Fabricate(:account, domain: 'remote.test', username: 'bob', url: 'https://remote.test/') }
 
   describe '#emoji' do
-    subject { EntityCache.instance.emoji(shortcodes, domain) }
+    subject { described_class.instance.emoji(shortcodes, domain) }
 
     context 'when called with an empty list of shortcodes' do
       let(:shortcodes) { [] }
diff --git a/spec/lib/extractor_spec.rb b/spec/lib/extractor_spec.rb
index 560617ed7..b6c910171 100644
--- a/spec/lib/extractor_spec.rb
+++ b/spec/lib/extractor_spec.rb
@@ -6,19 +6,19 @@ describe Extractor do
   describe 'extract_mentions_or_lists_with_indices' do
     it 'returns an empty array if the given string does not have at signs' do
       text = 'a string without at signs'
-      extracted = Extractor.extract_mentions_or_lists_with_indices(text)
+      extracted = described_class.extract_mentions_or_lists_with_indices(text)
       expect(extracted).to eq []
     end
 
     it 'does not extract mentions which ends with particular characters' do
       text = '@screen_name@'
-      extracted = Extractor.extract_mentions_or_lists_with_indices(text)
+      extracted = described_class.extract_mentions_or_lists_with_indices(text)
       expect(extracted).to eq []
     end
 
     it 'returns mentions as an array' do
       text = '@screen_name'
-      extracted = Extractor.extract_mentions_or_lists_with_indices(text)
+      extracted = described_class.extract_mentions_or_lists_with_indices(text)
       expect(extracted).to eq [
         { screen_name: 'screen_name', indices: [0, 12] },
       ]
@@ -26,7 +26,7 @@ describe Extractor do
 
     it 'yields mentions if a block is given' do
       text = '@screen_name'
-      Extractor.extract_mentions_or_lists_with_indices(text) do |screen_name, start_position, end_position|
+      described_class.extract_mentions_or_lists_with_indices(text) do |screen_name, start_position, end_position|
         expect(screen_name).to eq 'screen_name'
         expect(start_position).to eq 0
         expect(end_position).to eq 12
@@ -37,31 +37,31 @@ describe Extractor do
   describe 'extract_hashtags_with_indices' do
     it 'returns an empty array if it does not have #' do
       text = 'a string without hash sign'
-      extracted = Extractor.extract_hashtags_with_indices(text)
+      extracted = described_class.extract_hashtags_with_indices(text)
       expect(extracted).to eq []
     end
 
     it 'does not exclude normal hash text before ://' do
       text = '#hashtag://'
-      extracted = Extractor.extract_hashtags_with_indices(text)
+      extracted = described_class.extract_hashtags_with_indices(text)
       expect(extracted).to eq [{ hashtag: 'hashtag', indices: [0, 8] }]
     end
 
     it 'excludes http://' do
       text = '#hashtaghttp://'
-      extracted = Extractor.extract_hashtags_with_indices(text)
+      extracted = described_class.extract_hashtags_with_indices(text)
       expect(extracted).to eq [{ hashtag: 'hashtag', indices: [0, 8] }]
     end
 
     it 'excludes https://' do
       text = '#hashtaghttps://'
-      extracted = Extractor.extract_hashtags_with_indices(text)
+      extracted = described_class.extract_hashtags_with_indices(text)
       expect(extracted).to eq [{ hashtag: 'hashtag', indices: [0, 8] }]
     end
 
     it 'yields hashtags if a block is given' do
       text = '#hashtag'
-      Extractor.extract_hashtags_with_indices(text) do |hashtag, start_position, end_position|
+      described_class.extract_hashtags_with_indices(text) do |hashtag, start_position, end_position|
         expect(hashtag).to eq 'hashtag'
         expect(start_position).to eq 0
         expect(end_position).to eq 8
@@ -72,7 +72,7 @@ describe Extractor do
   describe 'extract_cashtags_with_indices' do
     it 'returns []' do
       text = '$cashtag'
-      extracted = Extractor.extract_cashtags_with_indices(text)
+      extracted = described_class.extract_cashtags_with_indices(text)
       expect(extracted).to eq []
     end
   end
diff --git a/spec/lib/feed_manager_spec.rb b/spec/lib/feed_manager_spec.rb
index 31b53fd87..5bfe11f6a 100644
--- a/spec/lib/feed_manager_spec.rb
+++ b/spec/lib/feed_manager_spec.rb
@@ -15,7 +15,7 @@ RSpec.describe FeedManager do
   end
 
   describe '#key' do
-    subject { FeedManager.instance.key(:home, 1) }
+    subject { described_class.instance.key(:home, 1) }
 
     it 'returns a string' do
       expect(subject).to be_a String
@@ -32,26 +32,26 @@ RSpec.describe FeedManager do
       it 'returns false for followee\'s status' do
         status = Fabricate(:status, text: 'Hello world', account: alice)
         bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:home, status, bob)).to be false
+        expect(described_class.instance.filter?(:home, status, bob)).to be false
       end
 
       it 'returns false for reblog by followee' do
         status = Fabricate(:status, text: 'Hello world', account: jeff)
         reblog = Fabricate(:status, reblog: status, account: alice)
         bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:home, reblog, bob)).to be false
+        expect(described_class.instance.filter?(:home, reblog, bob)).to be false
       end
 
       it 'returns true for post from account who blocked me' do
         status = Fabricate(:status, text: 'Hello, World', account: alice)
         alice.block!(bob)
-        expect(FeedManager.instance.filter?(:home, status, bob)).to be true
+        expect(described_class.instance.filter?(:home, status, bob)).to be true
       end
 
       it 'returns true for post from blocked account' do
         status = Fabricate(:status, text: 'Hello, World', account: alice)
         bob.block!(alice)
-        expect(FeedManager.instance.filter?(:home, status, bob)).to be true
+        expect(described_class.instance.filter?(:home, status, bob)).to be true
       end
 
       it 'returns true for reblog by followee of blocked account' do
@@ -59,7 +59,7 @@ RSpec.describe FeedManager do
         reblog = Fabricate(:status, reblog: status, account: alice)
         bob.follow!(alice)
         bob.block!(jeff)
-        expect(FeedManager.instance.filter?(:home, reblog, bob)).to be true
+        expect(described_class.instance.filter?(:home, reblog, bob)).to be true
       end
 
       it 'returns true for reblog by followee of muted account' do
@@ -67,7 +67,7 @@ RSpec.describe FeedManager do
         reblog = Fabricate(:status, reblog: status, account: alice)
         bob.follow!(alice)
         bob.mute!(jeff)
-        expect(FeedManager.instance.filter?(:home, reblog, bob)).to be true
+        expect(described_class.instance.filter?(:home, reblog, bob)).to be true
       end
 
       it 'returns true for reblog by followee of someone who is blocking recipient' do
@@ -75,14 +75,14 @@ RSpec.describe FeedManager do
         reblog = Fabricate(:status, reblog: status, account: alice)
         bob.follow!(alice)
         jeff.block!(bob)
-        expect(FeedManager.instance.filter?(:home, reblog, bob)).to be true
+        expect(described_class.instance.filter?(:home, reblog, bob)).to be true
       end
 
       it 'returns true for reblog from account with reblogs disabled' do
         status = Fabricate(:status, text: 'Hello world', account: jeff)
         reblog = Fabricate(:status, reblog: status, account: alice)
         bob.follow!(alice, reblogs: false)
-        expect(FeedManager.instance.filter?(:home, reblog, bob)).to be true
+        expect(described_class.instance.filter?(:home, reblog, bob)).to be true
       end
 
       it 'returns false for reply by followee to another followee' do
@@ -90,49 +90,49 @@ RSpec.describe FeedManager do
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: alice)
         bob.follow!(alice)
         bob.follow!(jeff)
-        expect(FeedManager.instance.filter?(:home, reply, bob)).to be false
+        expect(described_class.instance.filter?(:home, reply, bob)).to be false
       end
 
       it 'returns false for reply by followee to recipient' do
         status = Fabricate(:status, text: 'Hello world', account: bob)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: alice)
         bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:home, reply, bob)).to be false
+        expect(described_class.instance.filter?(:home, reply, bob)).to be false
       end
 
       it 'returns false for reply by followee to self' do
         status = Fabricate(:status, text: 'Hello world', account: alice)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: alice)
         bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:home, reply, bob)).to be false
+        expect(described_class.instance.filter?(:home, reply, bob)).to be false
       end
 
       it 'returns true for reply by followee to non-followed account' do
         status = Fabricate(:status, text: 'Hello world', account: jeff)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: alice)
         bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:home, reply, bob)).to be true
+        expect(described_class.instance.filter?(:home, reply, bob)).to be true
       end
 
       it 'returns true for the second reply by followee to a non-federated status' do
         reply        = Fabricate(:status, text: 'Reply 1', reply: true, account: alice)
         second_reply = Fabricate(:status, text: 'Reply 2', thread: reply, account: alice)
         bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:home, second_reply, bob)).to be true
+        expect(described_class.instance.filter?(:home, second_reply, bob)).to be true
       end
 
       it 'returns false for status by followee mentioning another account' do
         bob.follow!(alice)
         jeff.follow!(alice)
         status = PostStatusService.new.call(alice, text: 'Hey @jeff')
-        expect(FeedManager.instance.filter?(:home, status, bob)).to be false
+        expect(described_class.instance.filter?(:home, status, bob)).to be false
       end
 
       it 'returns true for status by followee mentioning blocked account' do
         bob.block!(jeff)
         bob.follow!(alice)
         status = PostStatusService.new.call(alice, text: 'Hey @jeff')
-        expect(FeedManager.instance.filter?(:home, status, bob)).to be true
+        expect(described_class.instance.filter?(:home, status, bob)).to be true
       end
 
       it 'returns true for reblog of a personally blocked domain' do
@@ -140,19 +140,19 @@ RSpec.describe FeedManager do
         alice.follow!(jeff)
         status = Fabricate(:status, text: 'Hello world', account: bob)
         reblog = Fabricate(:status, reblog: status, account: jeff)
-        expect(FeedManager.instance.filter?(:home, reblog, alice)).to be true
+        expect(described_class.instance.filter?(:home, reblog, alice)).to be true
       end
 
       it 'returns true for German post when follow is set to English only' do
         alice.follow!(bob, languages: %w(en))
         status = Fabricate(:status, text: 'Hallo Welt', account: bob, language: 'de')
-        expect(FeedManager.instance.filter?(:home, status, alice)).to be true
+        expect(described_class.instance.filter?(:home, status, alice)).to be true
       end
 
       it 'returns false for German post when follow is set to German' do
         alice.follow!(bob, languages: %w(de))
         status = Fabricate(:status, text: 'Hallo Welt', account: bob, language: 'de')
-        expect(FeedManager.instance.filter?(:home, status, alice)).to be false
+        expect(described_class.instance.filter?(:home, status, alice)).to be false
       end
 
       it 'returns true for post from followee on exclusive list' do
@@ -196,27 +196,27 @@ RSpec.describe FeedManager do
       it 'returns true for status that mentions blocked account' do
         bob.block!(jeff)
         status = PostStatusService.new.call(alice, text: 'Hey @jeff')
-        expect(FeedManager.instance.filter?(:mentions, status, bob)).to be true
+        expect(described_class.instance.filter?(:mentions, status, bob)).to be true
       end
 
       it 'returns true for status that replies to a blocked account' do
         status = Fabricate(:status, text: 'Hello world', account: jeff)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: alice)
         bob.block!(jeff)
-        expect(FeedManager.instance.filter?(:mentions, reply, bob)).to be true
+        expect(described_class.instance.filter?(:mentions, reply, bob)).to be true
       end
 
       it 'returns true for status by silenced account who recipient is not following' do
         status = Fabricate(:status, text: 'Hello world', account: alice)
         alice.silence!
-        expect(FeedManager.instance.filter?(:mentions, status, bob)).to be true
+        expect(described_class.instance.filter?(:mentions, status, bob)).to be true
       end
 
       it 'returns false for status by followed silenced account' do
         status = Fabricate(:status, text: 'Hello world', account: alice)
         alice.silence!
         bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:mentions, status, bob)).to be false
+        expect(described_class.instance.filter?(:mentions, status, bob)).to be false
       end
     end
   end
@@ -228,7 +228,7 @@ RSpec.describe FeedManager do
       members = Array.new(FeedManager::MAX_ITEMS) { |count| [count, count] }
       redis.zadd("feed:home:#{account.id}", members)
 
-      FeedManager.instance.push_to_home(account, status)
+      described_class.instance.push_to_home(account, status)
 
       expect(redis.zcard("feed:home:#{account.id}")).to eq FeedManager::MAX_ITEMS
     end
@@ -239,7 +239,7 @@ RSpec.describe FeedManager do
         reblogged = Fabricate(:status)
         reblog = Fabricate(:status, reblog: reblogged)
 
-        expect(FeedManager.instance.push_to_home(account, reblog)).to be true
+        expect(described_class.instance.push_to_home(account, reblog)).to be true
       end
 
       it 'does not save a new reblog of a recent status' do
@@ -247,9 +247,9 @@ RSpec.describe FeedManager do
         reblogged = Fabricate(:status)
         reblog = Fabricate(:status, reblog: reblogged)
 
-        FeedManager.instance.push_to_home(account, reblogged)
+        described_class.instance.push_to_home(account, reblogged)
 
-        expect(FeedManager.instance.push_to_home(account, reblog)).to be false
+        expect(described_class.instance.push_to_home(account, reblog)).to be false
       end
 
       it 'saves a new reblog of an old status' do
@@ -257,14 +257,14 @@ RSpec.describe FeedManager do
         reblogged = Fabricate(:status)
         reblog = Fabricate(:status, reblog: reblogged)
 
-        FeedManager.instance.push_to_home(account, reblogged)
+        described_class.instance.push_to_home(account, reblogged)
 
         # Fill the feed with intervening statuses
         FeedManager::REBLOG_FALLOFF.times do
-          FeedManager.instance.push_to_home(account, Fabricate(:status))
+          described_class.instance.push_to_home(account, Fabricate(:status))
         end
 
-        expect(FeedManager.instance.push_to_home(account, reblog)).to be true
+        expect(described_class.instance.push_to_home(account, reblog)).to be true
       end
 
       it 'does not save a new reblog of a recently-reblogged status' do
@@ -273,10 +273,10 @@ RSpec.describe FeedManager do
         reblogs = Array.new(2) { Fabricate(:status, reblog: reblogged) }
 
         # The first reblog will be accepted
-        FeedManager.instance.push_to_home(account, reblogs.first)
+        described_class.instance.push_to_home(account, reblogs.first)
 
         # The second reblog should be ignored
-        expect(FeedManager.instance.push_to_home(account, reblogs.last)).to be false
+        expect(described_class.instance.push_to_home(account, reblogs.last)).to be false
       end
 
       it 'saves a new reblog of a recently-reblogged status when previous reblog has been deleted' do
@@ -285,15 +285,15 @@ RSpec.describe FeedManager do
         old_reblog = Fabricate(:status, reblog: reblogged)
 
         # The first reblog should be accepted
-        expect(FeedManager.instance.push_to_home(account, old_reblog)).to be true
+        expect(described_class.instance.push_to_home(account, old_reblog)).to be true
 
         # The first reblog should be successfully removed
-        expect(FeedManager.instance.unpush_from_home(account, old_reblog)).to be true
+        expect(described_class.instance.unpush_from_home(account, old_reblog)).to be true
 
         reblog = Fabricate(:status, reblog: reblogged)
 
         # The second reblog should be accepted
-        expect(FeedManager.instance.push_to_home(account, reblog)).to be true
+        expect(described_class.instance.push_to_home(account, reblog)).to be true
       end
 
       it 'does not save a new reblog of a multiply-reblogged-then-unreblogged status' do
@@ -302,14 +302,14 @@ RSpec.describe FeedManager do
         reblogs = Array.new(3) { Fabricate(:status, reblog: reblogged) }
 
         # Accept the reblogs
-        FeedManager.instance.push_to_home(account, reblogs[0])
-        FeedManager.instance.push_to_home(account, reblogs[1])
+        described_class.instance.push_to_home(account, reblogs[0])
+        described_class.instance.push_to_home(account, reblogs[1])
 
         # Unreblog the first one
-        FeedManager.instance.unpush_from_home(account, reblogs[0])
+        described_class.instance.unpush_from_home(account, reblogs[0])
 
         # The last reblog should still be ignored
-        expect(FeedManager.instance.push_to_home(account, reblogs.last)).to be false
+        expect(described_class.instance.push_to_home(account, reblogs.last)).to be false
       end
 
       it 'saves a new reblog of a long-ago-reblogged status' do
@@ -318,15 +318,15 @@ RSpec.describe FeedManager do
         reblogs = Array.new(2) { Fabricate(:status, reblog: reblogged) }
 
         # The first reblog will be accepted
-        FeedManager.instance.push_to_home(account, reblogs.first)
+        described_class.instance.push_to_home(account, reblogs.first)
 
         # Fill the feed with intervening statuses
         FeedManager::REBLOG_FALLOFF.times do
-          FeedManager.instance.push_to_home(account, Fabricate(:status))
+          described_class.instance.push_to_home(account, Fabricate(:status))
         end
 
         # The second reblog should also be accepted
-        expect(FeedManager.instance.push_to_home(account, reblogs.last)).to be true
+        expect(described_class.instance.push_to_home(account, reblogs.last)).to be true
       end
     end
 
@@ -334,9 +334,9 @@ RSpec.describe FeedManager do
       account = Fabricate(:account)
       reblog = Fabricate(:status)
       status = Fabricate(:status, reblog: reblog)
-      FeedManager.instance.push_to_home(account, status)
+      described_class.instance.push_to_home(account, status)
 
-      expect(FeedManager.instance.push_to_home(account, reblog)).to be false
+      expect(described_class.instance.push_to_home(account, reblog)).to be false
     end
   end
 
@@ -359,9 +359,9 @@ RSpec.describe FeedManager do
     it "does not push when the given status's reblog is already inserted" do
       reblog = Fabricate(:status)
       status = Fabricate(:status, reblog: reblog)
-      FeedManager.instance.push_to_list(list, status)
+      described_class.instance.push_to_list(list, status)
 
-      expect(FeedManager.instance.push_to_list(list, reblog)).to be false
+      expect(described_class.instance.push_to_list(list, reblog)).to be false
     end
 
     context 'when replies policy is set to no replies' do
@@ -371,19 +371,19 @@ RSpec.describe FeedManager do
 
       it 'pushes statuses that are not replies' do
         status = Fabricate(:status, text: 'Hello world', account: bob)
-        expect(FeedManager.instance.push_to_list(list, status)).to be true
+        expect(described_class.instance.push_to_list(list, status)).to be true
       end
 
       it 'pushes statuses that are replies to list owner' do
         status = Fabricate(:status, text: 'Hello world', account: owner)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be true
+        expect(described_class.instance.push_to_list(list, reply)).to be true
       end
 
       it 'does not push replies to another member of the list' do
         status = Fabricate(:status, text: 'Hello world', account: alice)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be false
+        expect(described_class.instance.push_to_list(list, reply)).to be false
       end
     end
 
@@ -394,25 +394,25 @@ RSpec.describe FeedManager do
 
       it 'pushes statuses that are not replies' do
         status = Fabricate(:status, text: 'Hello world', account: bob)
-        expect(FeedManager.instance.push_to_list(list, status)).to be true
+        expect(described_class.instance.push_to_list(list, status)).to be true
       end
 
       it 'pushes statuses that are replies to list owner' do
         status = Fabricate(:status, text: 'Hello world', account: owner)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be true
+        expect(described_class.instance.push_to_list(list, reply)).to be true
       end
 
       it 'pushes replies to another member of the list' do
         status = Fabricate(:status, text: 'Hello world', account: alice)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be true
+        expect(described_class.instance.push_to_list(list, reply)).to be true
       end
 
       it 'does not push replies to someone not a member of the list' do
         status = Fabricate(:status, text: 'Hello world', account: eve)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be false
+        expect(described_class.instance.push_to_list(list, reply)).to be false
       end
     end
 
@@ -423,25 +423,25 @@ RSpec.describe FeedManager do
 
       it 'pushes statuses that are not replies' do
         status = Fabricate(:status, text: 'Hello world', account: bob)
-        expect(FeedManager.instance.push_to_list(list, status)).to be true
+        expect(described_class.instance.push_to_list(list, status)).to be true
       end
 
       it 'pushes statuses that are replies to list owner' do
         status = Fabricate(:status, text: 'Hello world', account: owner)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be true
+        expect(described_class.instance.push_to_list(list, reply)).to be true
       end
 
       it 'pushes replies to another member of the list' do
         status = Fabricate(:status, text: 'Hello world', account: alice)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be true
+        expect(described_class.instance.push_to_list(list, reply)).to be true
       end
 
       it 'pushes replies to someone not a member of the list' do
         status = Fabricate(:status, text: 'Hello world', account: eve)
         reply  = Fabricate(:status, text: 'Nay', thread: status, account: bob)
-        expect(FeedManager.instance.push_to_list(list, reply)).to be true
+        expect(described_class.instance.push_to_list(list, reply)).to be true
       end
     end
   end
@@ -451,9 +451,9 @@ RSpec.describe FeedManager do
       account = Fabricate(:account, id: 0)
       reblog = Fabricate(:status)
       status = Fabricate(:status, reblog: reblog)
-      FeedManager.instance.push_to_home(account, status)
+      described_class.instance.push_to_home(account, status)
 
-      FeedManager.instance.merge_into_home(account, reblog.account)
+      described_class.instance.merge_into_home(account, reblog.account)
 
       expect(redis.zscore('feed:home:0', reblog.id)).to be_nil
     end
@@ -466,14 +466,14 @@ RSpec.describe FeedManager do
       reblogged = Fabricate(:status)
       status    = Fabricate(:status, reblog: reblogged)
 
-      FeedManager.instance.push_to_home(receiver, reblogged)
-      FeedManager::REBLOG_FALLOFF.times { FeedManager.instance.push_to_home(receiver, Fabricate(:status)) }
-      FeedManager.instance.push_to_home(receiver, status)
+      described_class.instance.push_to_home(receiver, reblogged)
+      FeedManager::REBLOG_FALLOFF.times { described_class.instance.push_to_home(receiver, Fabricate(:status)) }
+      described_class.instance.push_to_home(receiver, status)
 
       # The reblogging status should show up under normal conditions.
       expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to include(status.id.to_s)
 
-      FeedManager.instance.unpush_from_home(receiver, status)
+      described_class.instance.unpush_from_home(receiver, status)
 
       # Restore original status
       expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to_not include(status.id.to_s)
@@ -484,12 +484,12 @@ RSpec.describe FeedManager do
       reblogged = Fabricate(:status)
       status    = Fabricate(:status, reblog: reblogged)
 
-      FeedManager.instance.push_to_home(receiver, status)
+      described_class.instance.push_to_home(receiver, status)
 
       # The reblogging status should show up under normal conditions.
       expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [status.id.to_s]
 
-      FeedManager.instance.unpush_from_home(receiver, status)
+      described_class.instance.unpush_from_home(receiver, status)
 
       expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to be_empty
     end
@@ -499,14 +499,14 @@ RSpec.describe FeedManager do
       reblogs   = Array.new(3) { Fabricate(:status, reblog: reblogged) }
 
       reblogs.each do |reblog|
-        FeedManager.instance.push_to_home(receiver, reblog)
+        described_class.instance.push_to_home(receiver, reblog)
       end
 
       # The reblogging status should show up under normal conditions.
       expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [reblogs.first.id.to_s]
 
       reblogs[0...-1].each do |reblog|
-        FeedManager.instance.unpush_from_home(receiver, reblog)
+        described_class.instance.unpush_from_home(receiver, reblog)
       end
 
       expect(redis.zrange("feed:home:#{receiver.id}", 0, -1)).to eq [reblogs.last.id.to_s]
@@ -515,10 +515,10 @@ RSpec.describe FeedManager do
     it 'sends push updates' do
       status = Fabricate(:status)
 
-      FeedManager.instance.push_to_home(receiver, status)
+      described_class.instance.push_to_home(receiver, status)
 
       allow(redis).to receive_messages(publish: nil)
-      FeedManager.instance.unpush_from_home(receiver, status)
+      described_class.instance.unpush_from_home(receiver, status)
 
       deletion = Oj.dump(event: :delete, payload: status.id.to_s)
       expect(redis).to have_received(:publish).with("timeline:#{receiver.id}", deletion)
@@ -544,7 +544,7 @@ RSpec.describe FeedManager do
     end
 
     it 'correctly cleans the home timeline' do
-      FeedManager.instance.clear_from_home(account, target_account)
+      described_class.instance.clear_from_home(account, target_account)
 
       expect(redis.zrange("feed:home:#{account.id}", 0, -1)).to eq [status_1.id.to_s, status_7.id.to_s]
     end
diff --git a/spec/lib/ostatus/tag_manager_spec.rb b/spec/lib/ostatus/tag_manager_spec.rb
index fb9740ce3..0e20f26c7 100644
--- a/spec/lib/ostatus/tag_manager_spec.rb
+++ b/spec/lib/ostatus/tag_manager_spec.rb
@@ -5,40 +5,40 @@ require 'rails_helper'
 describe OStatus::TagManager do
   describe '#unique_tag' do
     it 'returns a unique tag' do
-      expect(OStatus::TagManager.instance.unique_tag(Time.utc(2000), 12, 'Status')).to eq 'tag:cb6e6126.ngrok.io,2000-01-01:objectId=12:objectType=Status'
+      expect(described_class.instance.unique_tag(Time.utc(2000), 12, 'Status')).to eq 'tag:cb6e6126.ngrok.io,2000-01-01:objectId=12:objectType=Status'
     end
   end
 
   describe '#unique_tag_to_local_id' do
     it 'returns the ID part' do
-      expect(OStatus::TagManager.instance.unique_tag_to_local_id('tag:cb6e6126.ngrok.io,2000-01-01:objectId=12:objectType=Status', 'Status')).to eql '12'
+      expect(described_class.instance.unique_tag_to_local_id('tag:cb6e6126.ngrok.io,2000-01-01:objectId=12:objectType=Status', 'Status')).to eql '12'
     end
 
     it 'returns nil if it is not local id' do
-      expect(OStatus::TagManager.instance.unique_tag_to_local_id('tag:remote,2000-01-01:objectId=12:objectType=Status', 'Status')).to be_nil
+      expect(described_class.instance.unique_tag_to_local_id('tag:remote,2000-01-01:objectId=12:objectType=Status', 'Status')).to be_nil
     end
 
     it 'returns nil if it is not expected type' do
-      expect(OStatus::TagManager.instance.unique_tag_to_local_id('tag:cb6e6126.ngrok.io,2000-01-01:objectId=12:objectType=Block', 'Status')).to be_nil
+      expect(described_class.instance.unique_tag_to_local_id('tag:cb6e6126.ngrok.io,2000-01-01:objectId=12:objectType=Block', 'Status')).to be_nil
     end
 
     it 'returns nil if it does not have object ID' do
-      expect(OStatus::TagManager.instance.unique_tag_to_local_id('tag:cb6e6126.ngrok.io,2000-01-01:objectType=Status', 'Status')).to be_nil
+      expect(described_class.instance.unique_tag_to_local_id('tag:cb6e6126.ngrok.io,2000-01-01:objectType=Status', 'Status')).to be_nil
     end
   end
 
   describe '#local_id?' do
     it 'returns true for a local ID' do
-      expect(OStatus::TagManager.instance.local_id?('tag:cb6e6126.ngrok.io;objectId=12:objectType=Status')).to be true
+      expect(described_class.instance.local_id?('tag:cb6e6126.ngrok.io;objectId=12:objectType=Status')).to be true
     end
 
     it 'returns false for a foreign ID' do
-      expect(OStatus::TagManager.instance.local_id?('tag:foreign.tld;objectId=12:objectType=Status')).to be false
+      expect(described_class.instance.local_id?('tag:foreign.tld;objectId=12:objectType=Status')).to be false
     end
   end
 
   describe '#uri_for' do
-    subject { OStatus::TagManager.instance.uri_for(target) }
+    subject { described_class.instance.uri_for(target) }
 
     context 'with comment object' do
       let(:target) { Fabricate(:status, created_at: '2000-01-01T00:00:00Z', reply: true) }
diff --git a/spec/lib/request_spec.rb b/spec/lib/request_spec.rb
index 25fe9ed37..e88631e47 100644
--- a/spec/lib/request_spec.rb
+++ b/spec/lib/request_spec.rb
@@ -4,7 +4,7 @@ require 'rails_helper'
 require 'securerandom'
 
 describe Request do
-  subject { Request.new(:get, 'http://example.com') }
+  subject { described_class.new(:get, 'http://example.com') }
 
   describe '#headers' do
     it 'returns user agent' do
diff --git a/spec/lib/tag_manager_spec.rb b/spec/lib/tag_manager_spec.rb
index 8de290541..38203a55f 100644
--- a/spec/lib/tag_manager_spec.rb
+++ b/spec/lib/tag_manager_spec.rb
@@ -16,15 +16,15 @@ RSpec.describe TagManager do
     end
 
     it 'returns true for nil' do
-      expect(TagManager.instance.local_domain?(nil)).to be true
+      expect(described_class.instance.local_domain?(nil)).to be true
     end
 
     it 'returns true if the slash-stripped string equals to local domain' do
-      expect(TagManager.instance.local_domain?('DoMaIn.Example.com/')).to be true
+      expect(described_class.instance.local_domain?('DoMaIn.Example.com/')).to be true
     end
 
     it 'returns false for irrelevant string' do
-      expect(TagManager.instance.local_domain?('DoMaIn.Example.com!')).to be false
+      expect(described_class.instance.local_domain?('DoMaIn.Example.com!')).to be false
     end
   end
 
@@ -41,25 +41,25 @@ RSpec.describe TagManager do
     end
 
     it 'returns true for nil' do
-      expect(TagManager.instance.web_domain?(nil)).to be true
+      expect(described_class.instance.web_domain?(nil)).to be true
     end
 
     it 'returns true if the slash-stripped string equals to web domain' do
-      expect(TagManager.instance.web_domain?('DoMaIn.Example.com/')).to be true
+      expect(described_class.instance.web_domain?('DoMaIn.Example.com/')).to be true
     end
 
     it 'returns false for string with irrelevant characters' do
-      expect(TagManager.instance.web_domain?('DoMaIn.Example.com!')).to be false
+      expect(described_class.instance.web_domain?('DoMaIn.Example.com!')).to be false
     end
   end
 
   describe '#normalize_domain' do
     it 'returns nil if the given parameter is nil' do
-      expect(TagManager.instance.normalize_domain(nil)).to be_nil
+      expect(described_class.instance.normalize_domain(nil)).to be_nil
     end
 
     it 'returns normalized domain' do
-      expect(TagManager.instance.normalize_domain('DoMaIn.Example.com/')).to eq 'domain.example.com'
+      expect(described_class.instance.normalize_domain('DoMaIn.Example.com/')).to eq 'domain.example.com'
     end
   end
 
@@ -72,17 +72,17 @@ RSpec.describe TagManager do
 
     it 'returns true if the normalized string with port is local URL' do
       Rails.configuration.x.web_domain = 'domain.example.com:42'
-      expect(TagManager.instance.local_url?('https://DoMaIn.Example.com:42/')).to be true
+      expect(described_class.instance.local_url?('https://DoMaIn.Example.com:42/')).to be true
     end
 
     it 'returns true if the normalized string without port is local URL' do
       Rails.configuration.x.web_domain = 'domain.example.com'
-      expect(TagManager.instance.local_url?('https://DoMaIn.Example.com/')).to be true
+      expect(described_class.instance.local_url?('https://DoMaIn.Example.com/')).to be true
     end
 
     it 'returns false for string with irrelevant characters' do
       Rails.configuration.x.web_domain = 'domain.example.com'
-      expect(TagManager.instance.local_url?('https://domain.example.net/')).to be false
+      expect(described_class.instance.local_url?('https://domain.example.net/')).to be false
     end
   end
 end
diff --git a/spec/lib/webfinger_resource_spec.rb b/spec/lib/webfinger_resource_spec.rb
index 8ec6dd205..2cad04fcc 100644
--- a/spec/lib/webfinger_resource_spec.rb
+++ b/spec/lib/webfinger_resource_spec.rb
@@ -17,7 +17,7 @@ describe WebfingerResource do
         resource = 'https://example.com/users/alice/other'
 
         expect do
-          WebfingerResource.new(resource).username
+          described_class.new(resource).username
         end.to raise_error(ActiveRecord::RecordNotFound)
       end
 
@@ -32,7 +32,7 @@ describe WebfingerResource do
         expect(Rails.application.routes).to receive(:recognize_path).with(resource).and_return(recognized).at_least(:once)
 
         expect do
-          WebfingerResource.new(resource).username
+          described_class.new(resource).username
         end.to raise_error(ActiveRecord::RecordNotFound)
       end
 
@@ -40,28 +40,28 @@ describe WebfingerResource do
         resource = 'website for http://example.com/users/alice/other'
 
         expect do
-          WebfingerResource.new(resource).username
+          described_class.new(resource).username
         end.to raise_error(WebfingerResource::InvalidRequest)
       end
 
       it 'finds the username in a valid https route' do
         resource = 'https://example.com/users/alice'
 
-        result = WebfingerResource.new(resource).username
+        result = described_class.new(resource).username
         expect(result).to eq 'alice'
       end
 
       it 'finds the username in a mixed case http route' do
         resource = 'HTTp://exAMPLe.com/users/alice'
 
-        result = WebfingerResource.new(resource).username
+        result = described_class.new(resource).username
         expect(result).to eq 'alice'
       end
 
       it 'finds the username in a valid http route' do
         resource = 'http://example.com/users/alice'
 
-        result = WebfingerResource.new(resource).username
+        result = described_class.new(resource).username
         expect(result).to eq 'alice'
       end
     end
@@ -71,7 +71,7 @@ describe WebfingerResource do
         resource = 'user@remote-host.com'
 
         expect do
-          WebfingerResource.new(resource).username
+          described_class.new(resource).username
         end.to raise_error(ActiveRecord::RecordNotFound)
       end
 
@@ -79,7 +79,7 @@ describe WebfingerResource do
         Rails.configuration.x.local_domain = 'example.com'
         resource = 'alice@example.com'
 
-        result = WebfingerResource.new(resource).username
+        result = described_class.new(resource).username
         expect(result).to eq 'alice'
       end
 
@@ -87,7 +87,7 @@ describe WebfingerResource do
         Rails.configuration.x.web_domain = 'example.com'
         resource = 'alice@example.com'
 
-        result = WebfingerResource.new(resource).username
+        result = described_class.new(resource).username
         expect(result).to eq 'alice'
       end
     end
@@ -97,7 +97,7 @@ describe WebfingerResource do
         resource = 'acct:user@remote-host.com'
 
         expect do
-          WebfingerResource.new(resource).username
+          described_class.new(resource).username
         end.to raise_error(ActiveRecord::RecordNotFound)
       end
 
@@ -105,7 +105,7 @@ describe WebfingerResource do
         resource = 'acct:user@remote-host@remote-hostess.remote.local@remote'
 
         expect do
-          WebfingerResource.new(resource).username
+          described_class.new(resource).username
         end.to raise_error(ActiveRecord::RecordNotFound)
       end
 
@@ -113,7 +113,7 @@ describe WebfingerResource do
         Rails.configuration.x.local_domain = 'example.com'
         resource = 'acct:alice@example.com'
 
-        result = WebfingerResource.new(resource).username
+        result = described_class.new(resource).username
         expect(result).to eq 'alice'
       end
 
@@ -121,7 +121,7 @@ describe WebfingerResource do
         Rails.configuration.x.web_domain = 'example.com'
         resource = 'acct:alice@example.com'
 
-        result = WebfingerResource.new(resource).username
+        result = described_class.new(resource).username
         expect(result).to eq 'alice'
       end
     end
@@ -131,7 +131,7 @@ describe WebfingerResource do
         resource = 'df/:dfkj'
 
         expect do
-          WebfingerResource.new(resource).username
+          described_class.new(resource).username
         end.to raise_error(WebfingerResource::InvalidRequest)
       end
     end
diff --git a/spec/mailers/notification_mailer_spec.rb b/spec/mailers/notification_mailer_spec.rb
index 73c751def..bf364b625 100644
--- a/spec/mailers/notification_mailer_spec.rb
+++ b/spec/mailers/notification_mailer_spec.rb
@@ -23,7 +23,7 @@ RSpec.describe NotificationMailer do
 
   describe 'mention' do
     let(:mention) { Mention.create!(account: receiver.account, status: foreign_status) }
-    let(:mail) { NotificationMailer.mention(receiver.account, Notification.create!(account: receiver.account, activity: mention)) }
+    let(:mail) { described_class.mention(receiver.account, Notification.create!(account: receiver.account, activity: mention)) }
 
     include_examples 'localized subject', 'notification_mailer.mention.subject', name: 'bob'
 
@@ -40,7 +40,7 @@ RSpec.describe NotificationMailer do
 
   describe 'follow' do
     let(:follow) { sender.follow!(receiver.account) }
-    let(:mail) { NotificationMailer.follow(receiver.account, Notification.create!(account: receiver.account, activity: follow)) }
+    let(:mail) { described_class.follow(receiver.account, Notification.create!(account: receiver.account, activity: follow)) }
 
     include_examples 'localized subject', 'notification_mailer.follow.subject', name: 'bob'
 
@@ -56,7 +56,7 @@ RSpec.describe NotificationMailer do
 
   describe 'favourite' do
     let(:favourite) { Favourite.create!(account: sender, status: own_status) }
-    let(:mail) { NotificationMailer.favourite(own_status.account, Notification.create!(account: receiver.account, activity: favourite)) }
+    let(:mail) { described_class.favourite(own_status.account, Notification.create!(account: receiver.account, activity: favourite)) }
 
     include_examples 'localized subject', 'notification_mailer.favourite.subject', name: 'bob'
 
@@ -73,7 +73,7 @@ RSpec.describe NotificationMailer do
 
   describe 'reblog' do
     let(:reblog) { Status.create!(account: sender, reblog: own_status) }
-    let(:mail) { NotificationMailer.reblog(own_status.account, Notification.create!(account: receiver.account, activity: reblog)) }
+    let(:mail) { described_class.reblog(own_status.account, Notification.create!(account: receiver.account, activity: reblog)) }
 
     include_examples 'localized subject', 'notification_mailer.reblog.subject', name: 'bob'
 
@@ -90,7 +90,7 @@ RSpec.describe NotificationMailer do
 
   describe 'follow_request' do
     let(:follow_request) { Fabricate(:follow_request, account: sender, target_account: receiver.account) }
-    let(:mail) { NotificationMailer.follow_request(receiver.account, Notification.create!(account: receiver.account, activity: follow_request)) }
+    let(:mail) { described_class.follow_request(receiver.account, Notification.create!(account: receiver.account, activity: follow_request)) }
 
     include_examples 'localized subject', 'notification_mailer.follow_request.subject', name: 'bob'
 
diff --git a/spec/mailers/user_mailer_spec.rb b/spec/mailers/user_mailer_spec.rb
index a4f6c145a..702aa1c35 100644
--- a/spec/mailers/user_mailer_spec.rb
+++ b/spec/mailers/user_mailer_spec.rb
@@ -19,7 +19,7 @@ describe UserMailer do
   end
 
   describe 'confirmation_instructions' do
-    let(:mail) { UserMailer.confirmation_instructions(receiver, 'spec') }
+    let(:mail) { described_class.confirmation_instructions(receiver, 'spec') }
 
     it 'renders confirmation instructions' do
       receiver.update!(locale: nil)
@@ -34,7 +34,7 @@ describe UserMailer do
   end
 
   describe 'reconfirmation_instructions' do
-    let(:mail) { UserMailer.confirmation_instructions(receiver, 'spec') }
+    let(:mail) { described_class.confirmation_instructions(receiver, 'spec') }
 
     it 'renders reconfirmation instructions' do
       receiver.update!(email: 'new-email@example.com', locale: nil)
@@ -48,7 +48,7 @@ describe UserMailer do
   end
 
   describe 'reset_password_instructions' do
-    let(:mail) { UserMailer.reset_password_instructions(receiver, 'spec') }
+    let(:mail) { described_class.reset_password_instructions(receiver, 'spec') }
 
     it 'renders reset password instructions' do
       receiver.update!(locale: nil)
@@ -61,7 +61,7 @@ describe UserMailer do
   end
 
   describe 'password_change' do
-    let(:mail) { UserMailer.password_change(receiver) }
+    let(:mail) { described_class.password_change(receiver) }
 
     it 'renders password change notification' do
       receiver.update!(locale: nil)
@@ -73,7 +73,7 @@ describe UserMailer do
   end
 
   describe 'email_changed' do
-    let(:mail) { UserMailer.email_changed(receiver) }
+    let(:mail) { described_class.email_changed(receiver) }
 
     it 'renders email change notification' do
       receiver.update!(locale: nil)
@@ -86,7 +86,7 @@ describe UserMailer do
 
   describe 'warning' do
     let(:strike) { Fabricate(:account_warning, target_account: receiver.account, text: 'dont worry its just the testsuite', action: 'suspend') }
-    let(:mail)   { UserMailer.warning(receiver, strike) }
+    let(:mail)   { described_class.warning(receiver, strike) }
 
     it 'renders warning notification' do
       receiver.update!(locale: nil)
@@ -97,7 +97,7 @@ describe UserMailer do
 
   describe 'webauthn_credential_deleted' do
     let(:credential) { Fabricate(:webauthn_credential, user_id: receiver.id) }
-    let(:mail) { UserMailer.webauthn_credential_deleted(receiver, credential) }
+    let(:mail) { described_class.webauthn_credential_deleted(receiver, credential) }
 
     it 'renders webauthn credential deleted notification' do
       receiver.update!(locale: nil)
@@ -112,7 +112,7 @@ describe UserMailer do
     let(:ip) { '192.168.0.1' }
     let(:agent) { 'NCSA_Mosaic/2.0 (Windows 3.1)' }
     let(:timestamp) { Time.now.utc }
-    let(:mail) { UserMailer.suspicious_sign_in(receiver, ip, agent, timestamp) }
+    let(:mail) { described_class.suspicious_sign_in(receiver, ip, agent, timestamp) }
 
     it 'renders suspicious sign in notification' do
       receiver.update!(locale: nil)
@@ -125,7 +125,7 @@ describe UserMailer do
 
   describe 'appeal_approved' do
     let(:appeal) { Fabricate(:appeal, account: receiver.account, approved_at: Time.now.utc) }
-    let(:mail) { UserMailer.appeal_approved(receiver, appeal) }
+    let(:mail) { described_class.appeal_approved(receiver, appeal) }
 
     it 'renders appeal_approved notification' do
       expect(mail.subject).to eq I18n.t('user_mailer.appeal_approved.subject', date: I18n.l(appeal.created_at))
@@ -135,7 +135,7 @@ describe UserMailer do
 
   describe 'appeal_rejected' do
     let(:appeal) { Fabricate(:appeal, account: receiver.account, rejected_at: Time.now.utc) }
-    let(:mail) { UserMailer.appeal_rejected(receiver, appeal) }
+    let(:mail) { described_class.appeal_rejected(receiver, appeal) }
 
     it 'renders appeal_rejected notification' do
       expect(mail.subject).to eq I18n.t('user_mailer.appeal_rejected.subject', date: I18n.l(appeal.created_at))
diff --git a/spec/models/account_conversation_spec.rb b/spec/models/account_conversation_spec.rb
index a16aa500c..4e8727ca3 100644
--- a/spec/models/account_conversation_spec.rb
+++ b/spec/models/account_conversation_spec.rb
@@ -12,7 +12,7 @@ RSpec.describe AccountConversation do
       status = Fabricate(:status, account: alice, visibility: :direct)
       status.mentions.create(account: bob)
 
-      conversation = AccountConversation.add_status(alice, status)
+      conversation = described_class.add_status(alice, status)
 
       expect(conversation.participant_accounts).to include(bob)
       expect(conversation.last_status).to eq status
@@ -21,12 +21,12 @@ RSpec.describe AccountConversation do
 
     it 'appends to old record when there is a match' do
       last_status  = Fabricate(:status, account: alice, visibility: :direct)
-      conversation = AccountConversation.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [last_status.id])
+      conversation = described_class.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [last_status.id])
 
       status = Fabricate(:status, account: bob, visibility: :direct, thread: last_status)
       status.mentions.create(account: alice)
 
-      new_conversation = AccountConversation.add_status(alice, status)
+      new_conversation = described_class.add_status(alice, status)
 
       expect(new_conversation.id).to eq conversation.id
       expect(new_conversation.participant_accounts).to include(bob)
@@ -36,13 +36,13 @@ RSpec.describe AccountConversation do
 
     it 'creates new record when new participants are added' do
       last_status  = Fabricate(:status, account: alice, visibility: :direct)
-      conversation = AccountConversation.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [last_status.id])
+      conversation = described_class.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [last_status.id])
 
       status = Fabricate(:status, account: bob, visibility: :direct, thread: last_status)
       status.mentions.create(account: alice)
       status.mentions.create(account: mark)
 
-      new_conversation = AccountConversation.add_status(alice, status)
+      new_conversation = described_class.add_status(alice, status)
 
       expect(new_conversation.id).to_not eq conversation.id
       expect(new_conversation.participant_accounts).to include(bob, mark)
@@ -55,7 +55,7 @@ RSpec.describe AccountConversation do
     it 'updates last status to a previous value' do
       last_status  = Fabricate(:status, account: alice, visibility: :direct)
       status       = Fabricate(:status, account: alice, visibility: :direct)
-      conversation = AccountConversation.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [status.id, last_status.id])
+      conversation = described_class.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [status.id, last_status.id])
       last_status.mentions.create(account: bob)
       last_status.destroy!
       conversation.reload
@@ -65,10 +65,10 @@ RSpec.describe AccountConversation do
 
     it 'removes the record if no other statuses are referenced' do
       last_status  = Fabricate(:status, account: alice, visibility: :direct)
-      conversation = AccountConversation.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [last_status.id])
+      conversation = described_class.create!(account: alice, conversation: last_status.conversation, participant_account_ids: [bob.id], status_ids: [last_status.id])
       last_status.mentions.create(account: bob)
       last_status.destroy!
-      expect(AccountConversation.where(id: conversation.id).count).to eq 0
+      expect(described_class.where(id: conversation.id).count).to eq 0
     end
   end
 end
diff --git a/spec/models/account_domain_block_spec.rb b/spec/models/account_domain_block_spec.rb
index f3246d04c..10bd57936 100644
--- a/spec/models/account_domain_block_spec.rb
+++ b/spec/models/account_domain_block_spec.rb
@@ -7,14 +7,14 @@ RSpec.describe AccountDomainBlock do
     account = Fabricate(:account)
     Rails.cache.write("exclude_domains_for:#{account.id}", 'a.domain.already.blocked')
 
-    AccountDomainBlock.create!(account: account, domain: 'a.domain.blocked.later')
+    described_class.create!(account: account, domain: 'a.domain.blocked.later')
 
     expect(Rails.cache.exist?("exclude_domains_for:#{account.id}")).to be false
   end
 
   it 'removes blocking cache after destruction' do
     account = Fabricate(:account)
-    block = AccountDomainBlock.create!(account: account, domain: 'domain')
+    block = described_class.create!(account: account, domain: 'domain')
     Rails.cache.write("exclude_domains_for:#{account.id}", 'domain')
 
     block.destroy!
diff --git a/spec/models/account_migration_spec.rb b/spec/models/account_migration_spec.rb
index 519b9a97a..d76edddd5 100644
--- a/spec/models/account_migration_spec.rb
+++ b/spec/models/account_migration_spec.rb
@@ -7,7 +7,7 @@ RSpec.describe AccountMigration do
     let(:source_account) { Fabricate(:account) }
     let(:target_acct)    { target_account.acct }
 
-    let(:subject) { AccountMigration.new(account: source_account, acct: target_acct) }
+    let(:subject) { described_class.new(account: source_account, acct: target_acct) }
 
     context 'with valid properties' do
       let(:target_account) { Fabricate(:account, username: 'target', domain: 'remote.org') }
diff --git a/spec/models/account_spec.rb b/spec/models/account_spec.rb
index 6e9c608ab..d966bffa9 100644
--- a/spec/models/account_spec.rb
+++ b/spec/models/account_spec.rb
@@ -362,7 +362,7 @@ RSpec.describe Account do
         suspended: true
       )
 
-      results = Account.search_for('username')
+      results = described_class.search_for('username')
       expect(results).to eq []
     end
 
@@ -375,7 +375,7 @@ RSpec.describe Account do
 
       match.user.update(approved: false)
 
-      results = Account.search_for('username')
+      results = described_class.search_for('username')
       expect(results).to eq []
     end
 
@@ -388,7 +388,7 @@ RSpec.describe Account do
 
       match.user.update(confirmed_at: nil)
 
-      results = Account.search_for('username')
+      results = described_class.search_for('username')
       expect(results).to eq []
     end
 
@@ -400,7 +400,7 @@ RSpec.describe Account do
         domain: 'example.com'
       )
 
-      results = Account.search_for('A?l\i:c e')
+      results = described_class.search_for('A?l\i:c e')
       expect(results).to eq [match]
     end
 
@@ -412,7 +412,7 @@ RSpec.describe Account do
         domain: 'example.com'
       )
 
-      results = Account.search_for('display')
+      results = described_class.search_for('display')
       expect(results).to eq [match]
     end
 
@@ -424,7 +424,7 @@ RSpec.describe Account do
         domain: 'example.com'
       )
 
-      results = Account.search_for('username')
+      results = described_class.search_for('username')
       expect(results).to eq [match]
     end
 
@@ -436,19 +436,19 @@ RSpec.describe Account do
         domain: 'example.com'
       )
 
-      results = Account.search_for('example')
+      results = described_class.search_for('example')
       expect(results).to eq [match]
     end
 
     it 'limits by 10 by default' do
       11.times.each { Fabricate(:account, display_name: 'Display Name') }
-      results = Account.search_for('display')
+      results = described_class.search_for('display')
       expect(results.size).to eq 10
     end
 
     it 'accepts arbitrary limits' do
       2.times.each { Fabricate(:account, display_name: 'Display Name') }
-      results = Account.search_for('display', limit: 1)
+      results = described_class.search_for('display', limit: 1)
       expect(results.size).to eq 1
     end
 
@@ -458,7 +458,7 @@ RSpec.describe Account do
         { display_name: 'Display Name', username: 'username', domain: 'example.com' },
       ].map(&method(:Fabricate).curry(2).call(:account))
 
-      results = Account.search_for('username')
+      results = described_class.search_for('username')
       expect(results).to eq matches
     end
   end
@@ -476,7 +476,7 @@ RSpec.describe Account do
         )
         account.follow!(match)
 
-        results = Account.advanced_search_for('A?l\i:c e', account, limit: 10, following: true)
+        results = described_class.advanced_search_for('A?l\i:c e', account, limit: 10, following: true)
         expect(results).to eq [match]
       end
 
@@ -488,7 +488,7 @@ RSpec.describe Account do
           domain: 'example.com'
         )
 
-        results = Account.advanced_search_for('A?l\i:c e', account, limit: 10, following: true)
+        results = described_class.advanced_search_for('A?l\i:c e', account, limit: 10, following: true)
         expect(results).to eq []
       end
 
@@ -501,7 +501,7 @@ RSpec.describe Account do
           suspended: true
         )
 
-        results = Account.advanced_search_for('username', account, limit: 10, following: true)
+        results = described_class.advanced_search_for('username', account, limit: 10, following: true)
         expect(results).to eq []
       end
 
@@ -514,7 +514,7 @@ RSpec.describe Account do
 
         match.user.update(approved: false)
 
-        results = Account.advanced_search_for('username', account, limit: 10, following: true)
+        results = described_class.advanced_search_for('username', account, limit: 10, following: true)
         expect(results).to eq []
       end
 
@@ -527,7 +527,7 @@ RSpec.describe Account do
 
         match.user.update(confirmed_at: nil)
 
-        results = Account.advanced_search_for('username', account, limit: 10, following: true)
+        results = described_class.advanced_search_for('username', account, limit: 10, following: true)
         expect(results).to eq []
       end
     end
@@ -541,7 +541,7 @@ RSpec.describe Account do
         suspended: true
       )
 
-      results = Account.advanced_search_for('username', account)
+      results = described_class.advanced_search_for('username', account)
       expect(results).to eq []
     end
 
@@ -554,7 +554,7 @@ RSpec.describe Account do
 
       match.user.update(approved: false)
 
-      results = Account.advanced_search_for('username', account)
+      results = described_class.advanced_search_for('username', account)
       expect(results).to eq []
     end
 
@@ -567,7 +567,7 @@ RSpec.describe Account do
 
       match.user.update(confirmed_at: nil)
 
-      results = Account.advanced_search_for('username', account)
+      results = described_class.advanced_search_for('username', account)
       expect(results).to eq []
     end
 
@@ -579,19 +579,19 @@ RSpec.describe Account do
         domain: 'example.com'
       )
 
-      results = Account.advanced_search_for('A?l\i:c e', account)
+      results = described_class.advanced_search_for('A?l\i:c e', account)
       expect(results).to eq [match]
     end
 
     it 'limits by 10 by default' do
       11.times { Fabricate(:account, display_name: 'Display Name') }
-      results = Account.advanced_search_for('display', account)
+      results = described_class.advanced_search_for('display', account)
       expect(results.size).to eq 10
     end
 
     it 'accepts arbitrary limits' do
       2.times { Fabricate(:account, display_name: 'Display Name') }
-      results = Account.advanced_search_for('display', account, limit: 1)
+      results = described_class.advanced_search_for('display', account, limit: 1)
       expect(results.size).to eq 1
     end
 
@@ -600,7 +600,7 @@ RSpec.describe Account do
       followed_match = Fabricate(:account, username: 'Matcher')
       Fabricate(:follow, account: account, target_account: followed_match)
 
-      results = Account.advanced_search_for('match', account)
+      results = described_class.advanced_search_for('match', account)
       expect(results).to eq [followed_match, match]
       expect(results.first.rank).to be > results.last.rank
     end
@@ -639,31 +639,31 @@ RSpec.describe Account do
 
   describe '.following_map' do
     it 'returns an hash' do
-      expect(Account.following_map([], 1)).to be_a Hash
+      expect(described_class.following_map([], 1)).to be_a Hash
     end
   end
 
   describe '.followed_by_map' do
     it 'returns an hash' do
-      expect(Account.followed_by_map([], 1)).to be_a Hash
+      expect(described_class.followed_by_map([], 1)).to be_a Hash
     end
   end
 
   describe '.blocking_map' do
     it 'returns an hash' do
-      expect(Account.blocking_map([], 1)).to be_a Hash
+      expect(described_class.blocking_map([], 1)).to be_a Hash
     end
   end
 
   describe '.requested_map' do
     it 'returns an hash' do
-      expect(Account.requested_map([], 1)).to be_a Hash
+      expect(described_class.requested_map([], 1)).to be_a Hash
     end
   end
 
   describe '.requested_by_map' do
     it 'returns an hash' do
-      expect(Account.requested_by_map([], 1)).to be_a Hash
+      expect(described_class.requested_by_map([], 1)).to be_a Hash
     end
   end
 
@@ -834,7 +834,7 @@ RSpec.describe Account do
           { username: 'b', domain: 'b' },
         ].map(&method(:Fabricate).curry(2).call(:account))
 
-        expect(Account.where('id > 0').alphabetic).to eq matches
+        expect(described_class.where('id > 0').alphabetic).to eq matches
       end
     end
 
@@ -843,7 +843,7 @@ RSpec.describe Account do
         match = Fabricate(:account, display_name: 'pattern and suffix')
         Fabricate(:account, display_name: 'prefix and pattern')
 
-        expect(Account.matches_display_name('pattern')).to eq [match]
+        expect(described_class.matches_display_name('pattern')).to eq [match]
       end
     end
 
@@ -852,24 +852,24 @@ RSpec.describe Account do
         match = Fabricate(:account, username: 'pattern_and_suffix')
         Fabricate(:account, username: 'prefix_and_pattern')
 
-        expect(Account.matches_username('pattern')).to eq [match]
+        expect(described_class.matches_username('pattern')).to eq [match]
       end
     end
 
     describe 'by_domain_and_subdomains' do
       it 'returns exact domain matches' do
         account = Fabricate(:account, domain: 'example.com')
-        expect(Account.by_domain_and_subdomains('example.com')).to eq [account]
+        expect(described_class.by_domain_and_subdomains('example.com')).to eq [account]
       end
 
       it 'returns subdomains' do
         account = Fabricate(:account, domain: 'foo.example.com')
-        expect(Account.by_domain_and_subdomains('example.com')).to eq [account]
+        expect(described_class.by_domain_and_subdomains('example.com')).to eq [account]
       end
 
       it 'does not return partially matching domains' do
         account = Fabricate(:account, domain: 'grexample.com')
-        expect(Account.by_domain_and_subdomains('example.com')).to_not eq [account]
+        expect(described_class.by_domain_and_subdomains('example.com')).to_not eq [account]
       end
     end
 
@@ -877,7 +877,7 @@ RSpec.describe Account do
       it 'returns an array of accounts who have a domain' do
         account_1 = Fabricate(:account, domain: nil)
         account_2 = Fabricate(:account, domain: 'example.com')
-        expect(Account.remote).to contain_exactly(account_2)
+        expect(described_class.remote).to contain_exactly(account_2)
       end
     end
 
@@ -885,7 +885,7 @@ RSpec.describe Account do
       it 'returns an array of accounts who do not have a domain' do
         account_1 = Fabricate(:account, domain: nil)
         account_2 = Fabricate(:account, domain: 'example.com')
-        expect(Account.where('id > 0').local).to contain_exactly(account_1)
+        expect(described_class.where('id > 0').local).to contain_exactly(account_1)
       end
     end
 
@@ -896,14 +896,14 @@ RSpec.describe Account do
           matches[index] = Fabricate(:account, domain: matches[index])
         end
 
-        expect(Account.where('id > 0').partitioned).to match_array(matches)
+        expect(described_class.where('id > 0').partitioned).to match_array(matches)
       end
     end
 
     describe 'recent' do
       it 'returns a relation of accounts sorted by recent creation' do
         matches = Array.new(2) { Fabricate(:account) }
-        expect(Account.where('id > 0').recent).to match_array(matches)
+        expect(described_class.where('id > 0').recent).to match_array(matches)
       end
     end
 
@@ -911,7 +911,7 @@ RSpec.describe Account do
       it 'returns an array of accounts who are silenced' do
         account_1 = Fabricate(:account, silenced: true)
         account_2 = Fabricate(:account, silenced: false)
-        expect(Account.silenced).to contain_exactly(account_1)
+        expect(described_class.silenced).to contain_exactly(account_1)
       end
     end
 
@@ -919,7 +919,7 @@ RSpec.describe Account do
       it 'returns an array of accounts who are suspended' do
         account_1 = Fabricate(:account, suspended: true)
         account_2 = Fabricate(:account, suspended: false)
-        expect(Account.suspended).to contain_exactly(account_1)
+        expect(described_class.suspended).to contain_exactly(account_1)
       end
     end
 
@@ -941,18 +941,18 @@ RSpec.describe Account do
       end
 
       it 'returns every usable non-suspended account' do
-        expect(Account.searchable).to contain_exactly(silenced_local, silenced_remote, local_account, remote_account)
+        expect(described_class.searchable).to contain_exactly(silenced_local, silenced_remote, local_account, remote_account)
       end
 
       it 'does not mess with previously-applied scopes' do
-        expect(Account.where.not(id: remote_account.id).searchable).to contain_exactly(silenced_local, silenced_remote, local_account)
+        expect(described_class.where.not(id: remote_account.id).searchable).to contain_exactly(silenced_local, silenced_remote, local_account)
       end
     end
   end
 
   context 'when is local' do
     it 'generates keys' do
-      account = Account.create!(domain: nil, username: Faker::Internet.user_name(separators: ['_']))
+      account = described_class.create!(domain: nil, username: Faker::Internet.user_name(separators: ['_']))
       expect(account.keypair).to be_private
       expect(account.keypair).to be_public
     end
@@ -961,12 +961,12 @@ RSpec.describe Account do
   context 'when is remote' do
     it 'does not generate keys' do
       key = OpenSSL::PKey::RSA.new(1024).public_key
-      account = Account.create!(domain: 'remote', username: Faker::Internet.user_name(separators: ['_']), public_key: key.to_pem)
+      account = described_class.create!(domain: 'remote', username: Faker::Internet.user_name(separators: ['_']), public_key: key.to_pem)
       expect(account.keypair.params).to eq key.params
     end
 
     it 'normalizes domain' do
-      account = Account.create!(domain: 'にゃん', username: Faker::Internet.user_name(separators: ['_']))
+      account = described_class.create!(domain: 'にゃん', username: Faker::Internet.user_name(separators: ['_']))
       expect(account.domain).to eq 'xn--r9j5b5b'
     end
   end
@@ -986,7 +986,7 @@ RSpec.describe Account do
       threads = Array.new(increment_by) do
         Thread.new do
           true while wait_for_start
-          Account.find(subject.id).increment_count!(:followers_count)
+          described_class.find(subject.id).increment_count!(:followers_count)
         end
       end
 
diff --git a/spec/models/block_spec.rb b/spec/models/block_spec.rb
index de3410fd5..8249503c5 100644
--- a/spec/models/block_spec.rb
+++ b/spec/models/block_spec.rb
@@ -23,7 +23,7 @@ RSpec.describe Block do
     Rails.cache.write("exclude_account_ids_for:#{account.id}", [])
     Rails.cache.write("exclude_account_ids_for:#{target_account.id}", [])
 
-    Block.create!(account: account, target_account: target_account)
+    described_class.create!(account: account, target_account: target_account)
 
     expect(Rails.cache.exist?("exclude_account_ids_for:#{account.id}")).to be false
     expect(Rails.cache.exist?("exclude_account_ids_for:#{target_account.id}")).to be false
@@ -32,7 +32,7 @@ RSpec.describe Block do
   it 'removes blocking cache after destruction' do
     account = Fabricate(:account)
     target_account = Fabricate(:account)
-    block = Block.create!(account: account, target_account: target_account)
+    block = described_class.create!(account: account, target_account: target_account)
     Rails.cache.write("exclude_account_ids_for:#{account.id}", [target_account.id])
     Rails.cache.write("exclude_account_ids_for:#{target_account.id}", [account.id])
 
diff --git a/spec/models/domain_block_spec.rb b/spec/models/domain_block_spec.rb
index e123c03d6..67f53fa78 100644
--- a/spec/models/domain_block_spec.rb
+++ b/spec/models/domain_block_spec.rb
@@ -21,73 +21,73 @@ RSpec.describe DomainBlock do
   describe '.blocked?' do
     it 'returns true if the domain is suspended' do
       Fabricate(:domain_block, domain: 'example.com', severity: :suspend)
-      expect(DomainBlock.blocked?('example.com')).to be true
+      expect(described_class.blocked?('example.com')).to be true
     end
 
     it 'returns false even if the domain is silenced' do
       Fabricate(:domain_block, domain: 'example.com', severity: :silence)
-      expect(DomainBlock.blocked?('example.com')).to be false
+      expect(described_class.blocked?('example.com')).to be false
     end
 
     it 'returns false if the domain is not suspended nor silenced' do
-      expect(DomainBlock.blocked?('example.com')).to be false
+      expect(described_class.blocked?('example.com')).to be false
     end
   end
 
   describe '.rule_for' do
     it 'returns rule matching a blocked domain' do
       block = Fabricate(:domain_block, domain: 'example.com')
-      expect(DomainBlock.rule_for('example.com')).to eq block
+      expect(described_class.rule_for('example.com')).to eq block
     end
 
     it 'returns a rule matching a subdomain of a blocked domain' do
       block = Fabricate(:domain_block, domain: 'example.com')
-      expect(DomainBlock.rule_for('sub.example.com')).to eq block
+      expect(described_class.rule_for('sub.example.com')).to eq block
     end
 
     it 'returns a rule matching a blocked subdomain' do
       block = Fabricate(:domain_block, domain: 'sub.example.com')
-      expect(DomainBlock.rule_for('sub.example.com')).to eq block
+      expect(described_class.rule_for('sub.example.com')).to eq block
     end
 
     it 'returns a rule matching a blocked TLD' do
       block = Fabricate(:domain_block, domain: 'google')
-      expect(DomainBlock.rule_for('google')).to eq block
+      expect(described_class.rule_for('google')).to eq block
     end
 
     it 'returns a rule matching a subdomain of a blocked TLD' do
       block = Fabricate(:domain_block, domain: 'google')
-      expect(DomainBlock.rule_for('maps.google')).to eq block
+      expect(described_class.rule_for('maps.google')).to eq block
     end
   end
 
   describe '#stricter_than?' do
     it 'returns true if the new block has suspend severity while the old has lower severity' do
-      suspend = DomainBlock.new(domain: 'domain', severity: :suspend)
-      silence = DomainBlock.new(domain: 'domain', severity: :silence)
-      noop = DomainBlock.new(domain: 'domain', severity: :noop)
+      suspend = described_class.new(domain: 'domain', severity: :suspend)
+      silence = described_class.new(domain: 'domain', severity: :silence)
+      noop = described_class.new(domain: 'domain', severity: :noop)
       expect(suspend.stricter_than?(silence)).to be true
       expect(suspend.stricter_than?(noop)).to be true
     end
 
     it 'returns false if the new block has lower severity than the old one' do
-      suspend = DomainBlock.new(domain: 'domain', severity: :suspend)
-      silence = DomainBlock.new(domain: 'domain', severity: :silence)
-      noop = DomainBlock.new(domain: 'domain', severity: :noop)
+      suspend = described_class.new(domain: 'domain', severity: :suspend)
+      silence = described_class.new(domain: 'domain', severity: :silence)
+      noop = described_class.new(domain: 'domain', severity: :noop)
       expect(silence.stricter_than?(suspend)).to be false
       expect(noop.stricter_than?(suspend)).to be false
       expect(noop.stricter_than?(silence)).to be false
     end
 
     it 'returns false if the new block does is less strict regarding reports' do
-      older = DomainBlock.new(domain: 'domain', severity: :silence, reject_reports: true)
-      newer = DomainBlock.new(domain: 'domain', severity: :silence, reject_reports: false)
+      older = described_class.new(domain: 'domain', severity: :silence, reject_reports: true)
+      newer = described_class.new(domain: 'domain', severity: :silence, reject_reports: false)
       expect(newer.stricter_than?(older)).to be false
     end
 
     it 'returns false if the new block does is less strict regarding media' do
-      older = DomainBlock.new(domain: 'domain', severity: :silence, reject_media: true)
-      newer = DomainBlock.new(domain: 'domain', severity: :silence, reject_media: false)
+      older = described_class.new(domain: 'domain', severity: :silence, reject_media: true)
+      newer = described_class.new(domain: 'domain', severity: :silence, reject_media: false)
       expect(newer.stricter_than?(older)).to be false
     end
   end
diff --git a/spec/models/email_domain_block_spec.rb b/spec/models/email_domain_block_spec.rb
index a7232eb6b..9d9c74887 100644
--- a/spec/models/email_domain_block_spec.rb
+++ b/spec/models/email_domain_block_spec.rb
@@ -14,12 +14,12 @@ RSpec.describe EmailDomainBlock do
 
         it 'returns true if the domain is blocked' do
           Fabricate(:email_domain_block, domain: 'example.com')
-          expect(EmailDomainBlock.block?(input)).to be true
+          expect(described_class.block?(input)).to be true
         end
 
         it 'returns false if the domain is not blocked' do
           Fabricate(:email_domain_block, domain: 'other-example.com')
-          expect(EmailDomainBlock.block?(input)).to be false
+          expect(described_class.block?(input)).to be false
         end
       end
 
@@ -38,7 +38,7 @@ RSpec.describe EmailDomainBlock do
 
       it 'returns true if the domain is blocked' do
         Fabricate(:email_domain_block, domain: 'mail.foo.com')
-        expect(EmailDomainBlock.block?(input)).to be true
+        expect(described_class.block?(input)).to be true
       end
     end
   end
diff --git a/spec/models/export_spec.rb b/spec/models/export_spec.rb
index a863678a3..75468898d 100644
--- a/spec/models/export_spec.rb
+++ b/spec/models/export_spec.rb
@@ -12,7 +12,7 @@ describe Export do
     it 'returns a csv of the blocked accounts' do
       target_accounts.each { |target_account| account.block!(target_account) }
 
-      export = Export.new(account).to_blocked_accounts_csv
+      export = described_class.new(account).to_blocked_accounts_csv
       results = export.strip.split
 
       expect(results.size).to eq 2
@@ -22,7 +22,7 @@ describe Export do
     it 'returns a csv of the muted accounts' do
       target_accounts.each { |target_account| account.mute!(target_account) }
 
-      export = Export.new(account).to_muted_accounts_csv
+      export = described_class.new(account).to_muted_accounts_csv
       results = export.strip.split("\n")
 
       expect(results.size).to eq 3
@@ -33,7 +33,7 @@ describe Export do
     it 'returns a csv of the following accounts' do
       target_accounts.each { |target_account| account.follow!(target_account) }
 
-      export = Export.new(account).to_following_accounts_csv
+      export = described_class.new(account).to_following_accounts_csv
       results = export.strip.split("\n")
 
       expect(results.size).to eq 3
@@ -45,24 +45,24 @@ describe Export do
   describe 'total_storage' do
     it 'returns the total size of the media attachments' do
       media_attachment = Fabricate(:media_attachment, account: account)
-      expect(Export.new(account).total_storage).to eq media_attachment.file_file_size || 0
+      expect(described_class.new(account).total_storage).to eq media_attachment.file_file_size || 0
     end
   end
 
   describe 'total_follows' do
     it 'returns the total number of the followed accounts' do
       target_accounts.each { |target_account| account.follow!(target_account) }
-      expect(Export.new(account.reload).total_follows).to eq 2
+      expect(described_class.new(account.reload).total_follows).to eq 2
     end
 
     it 'returns the total number of the blocked accounts' do
       target_accounts.each { |target_account| account.block!(target_account) }
-      expect(Export.new(account.reload).total_blocks).to eq 2
+      expect(described_class.new(account.reload).total_blocks).to eq 2
     end
 
     it 'returns the total number of the muted accounts' do
       target_accounts.each { |target_account| account.mute!(target_account) }
-      expect(Export.new(account.reload).total_mutes).to eq 2
+      expect(described_class.new(account.reload).total_mutes).to eq 2
     end
   end
 end
diff --git a/spec/models/favourite_spec.rb b/spec/models/favourite_spec.rb
index 9e69570a0..ef7fbdefc 100644
--- a/spec/models/favourite_spec.rb
+++ b/spec/models/favourite_spec.rb
@@ -10,12 +10,12 @@ RSpec.describe Favourite do
     let(:status) { Fabricate(:status, reblog: reblog) }
 
     it 'invalidates if the reblogged status is already a favourite' do
-      Favourite.create!(account: account, status: reblog)
-      expect(Favourite.new(account: account, status: status).valid?).to be false
+      described_class.create!(account: account, status: reblog)
+      expect(described_class.new(account: account, status: status).valid?).to be false
     end
 
     it 'replaces status with the reblogged one if it is a reblog' do
-      favourite = Favourite.create!(account: account, status: status)
+      favourite = described_class.create!(account: account, status: status)
       expect(favourite.status).to eq reblog
     end
   end
@@ -24,7 +24,7 @@ RSpec.describe Favourite do
     let(:status) { Fabricate(:status, reblog: nil) }
 
     it 'saves with the specified status' do
-      favourite = Favourite.create!(account: account, status: status)
+      favourite = described_class.create!(account: account, status: status)
       expect(favourite.status).to eq status
     end
   end
diff --git a/spec/models/follow_spec.rb b/spec/models/follow_spec.rb
index 79c0048f9..c7743183c 100644
--- a/spec/models/follow_spec.rb
+++ b/spec/models/follow_spec.rb
@@ -7,7 +7,7 @@ RSpec.describe Follow do
   let(:bob)   { Fabricate(:account, username: 'bob') }
 
   describe 'validations' do
-    subject { Follow.new(account: alice, target_account: bob, rate_limit: true) }
+    subject { described_class.new(account: alice, target_account: bob, rate_limit: true) }
 
     it 'is invalid without an account' do
       follow = Fabricate.build(:follow, account: nil)
@@ -38,10 +38,10 @@ RSpec.describe Follow do
 
   describe 'recent' do
     it 'sorts so that more recent follows comes earlier' do
-      follow0 = Follow.create!(account: alice, target_account: bob)
-      follow1 = Follow.create!(account: bob, target_account: alice)
+      follow0 = described_class.create!(account: alice, target_account: bob)
+      follow1 = described_class.create!(account: bob, target_account: alice)
 
-      a = Follow.recent.to_a
+      a = described_class.recent.to_a
 
       expect(a.size).to eq 2
       expect(a[0]).to eq follow1
diff --git a/spec/models/identity_spec.rb b/spec/models/identity_spec.rb
index 59155781c..2fca1e1c1 100644
--- a/spec/models/identity_spec.rb
+++ b/spec/models/identity_spec.rb
@@ -12,7 +12,7 @@ RSpec.describe Identity do
     end
 
     it 'returns an instance of Identity' do
-      expect(described_class.find_for_oauth(auth)).to be_instance_of Identity
+      expect(described_class.find_for_oauth(auth)).to be_instance_of described_class
     end
   end
 end
diff --git a/spec/models/import_spec.rb b/spec/models/import_spec.rb
index 1dae40a73..3605f0b9b 100644
--- a/spec/models/import_spec.rb
+++ b/spec/models/import_spec.rb
@@ -9,17 +9,17 @@ RSpec.describe Import do
 
   describe 'validations' do
     it 'has a valid parameters' do
-      import = Import.create(account: account, type: type, data: data)
+      import = described_class.create(account: account, type: type, data: data)
       expect(import).to be_valid
     end
 
     it 'is invalid without an type' do
-      import = Import.create(account: account, data: data)
+      import = described_class.create(account: account, data: data)
       expect(import).to model_have_error_on_field(:type)
     end
 
     it 'is invalid without a data' do
-      import = Import.create(account: account, type: type)
+      import = described_class.create(account: account, type: type)
       expect(import).to model_have_error_on_field(:data)
     end
   end
diff --git a/spec/models/media_attachment_spec.rb b/spec/models/media_attachment_spec.rb
index becc74824..4d4bc748f 100644
--- a/spec/models/media_attachment_spec.rb
+++ b/spec/models/media_attachment_spec.rb
@@ -85,7 +85,7 @@ RSpec.describe MediaAttachment do
   end
 
   describe 'animated gif conversion' do
-    let(:media) { MediaAttachment.create(account: Fabricate(:account), file: attachment_fixture('avatar.gif')) }
+    let(:media) { described_class.create(account: Fabricate(:account), file: attachment_fixture('avatar.gif')) }
 
     it 'sets type to gifv' do
       expect(media.type).to eq 'gifv'
@@ -109,7 +109,7 @@ RSpec.describe MediaAttachment do
 
     fixtures.each do |fixture|
       context fixture[:filename] do
-        let(:media) { MediaAttachment.create(account: Fabricate(:account), file: attachment_fixture(fixture[:filename])) }
+        let(:media) { described_class.create(account: Fabricate(:account), file: attachment_fixture(fixture[:filename])) }
 
         it 'sets type to image' do
           expect(media.type).to eq 'image'
@@ -129,7 +129,7 @@ RSpec.describe MediaAttachment do
   end
 
   describe 'ogg with cover art' do
-    let(:media) { MediaAttachment.create(account: Fabricate(:account), file: attachment_fixture('boop.ogg')) }
+    let(:media) { described_class.create(account: Fabricate(:account), file: attachment_fixture('boop.ogg')) }
 
     it 'detects it as an audio file' do
       expect(media.type).to eq 'audio'
@@ -153,7 +153,7 @@ RSpec.describe MediaAttachment do
   end
 
   describe 'jpeg' do
-    let(:media) { MediaAttachment.create(account: Fabricate(:account), file: attachment_fixture('attachment.jpg')) }
+    let(:media) { described_class.create(account: Fabricate(:account), file: attachment_fixture('attachment.jpg')) }
 
     it 'sets meta for different style' do
       expect(media.file.meta['original']['width']).to eq 600
@@ -171,7 +171,7 @@ RSpec.describe MediaAttachment do
 
   describe 'base64-encoded jpeg' do
     let(:base64_attachment) { "data:image/jpeg;base64,#{Base64.encode64(attachment_fixture('attachment.jpg').read)}" }
-    let(:media) { MediaAttachment.create(account: Fabricate(:account), file: base64_attachment) }
+    let(:media) { described_class.create(account: Fabricate(:account), file: base64_attachment) }
 
     it 'saves media attachment' do
       expect(media.persisted?).to be true
@@ -184,7 +184,7 @@ RSpec.describe MediaAttachment do
   end
 
   it 'is invalid without file' do
-    media = MediaAttachment.new(account: Fabricate(:account))
+    media = described_class.new(account: Fabricate(:account))
     expect(media.valid?).to be false
   end
 
@@ -192,26 +192,26 @@ RSpec.describe MediaAttachment do
     it 'rejects video files that are too large' do
       stub_const 'MediaAttachment::IMAGE_LIMIT', 100.megabytes
       stub_const 'MediaAttachment::VIDEO_LIMIT', 1.kilobyte
-      expect { MediaAttachment.create!(account: Fabricate(:account), file: attachment_fixture('attachment.webm')) }.to raise_error(ActiveRecord::RecordInvalid)
+      expect { described_class.create!(account: Fabricate(:account), file: attachment_fixture('attachment.webm')) }.to raise_error(ActiveRecord::RecordInvalid)
     end
 
     it 'accepts video files that are small enough' do
       stub_const 'MediaAttachment::IMAGE_LIMIT', 1.kilobyte
       stub_const 'MediaAttachment::VIDEO_LIMIT', 100.megabytes
-      media = MediaAttachment.create!(account: Fabricate(:account), file: attachment_fixture('attachment.webm'))
+      media = described_class.create!(account: Fabricate(:account), file: attachment_fixture('attachment.webm'))
       expect(media.valid?).to be true
     end
 
     it 'rejects image files that are too large' do
       stub_const 'MediaAttachment::IMAGE_LIMIT', 1.kilobyte
       stub_const 'MediaAttachment::VIDEO_LIMIT', 100.megabytes
-      expect { MediaAttachment.create!(account: Fabricate(:account), file: attachment_fixture('attachment.jpg')) }.to raise_error(ActiveRecord::RecordInvalid)
+      expect { described_class.create!(account: Fabricate(:account), file: attachment_fixture('attachment.jpg')) }.to raise_error(ActiveRecord::RecordInvalid)
     end
 
     it 'accepts image files that are small enough' do
       stub_const 'MediaAttachment::IMAGE_LIMIT', 100.megabytes
       stub_const 'MediaAttachment::VIDEO_LIMIT', 1.kilobyte
-      media = MediaAttachment.create!(account: Fabricate(:account), file: attachment_fixture('attachment.jpg'))
+      media = described_class.create!(account: Fabricate(:account), file: attachment_fixture('attachment.jpg'))
       expect(media.valid?).to be true
     end
   end
diff --git a/spec/models/notification_spec.rb b/spec/models/notification_spec.rb
index 795491546..0dd9264e0 100644
--- a/spec/models/notification_spec.rb
+++ b/spec/models/notification_spec.rb
@@ -38,22 +38,22 @@ RSpec.describe Notification do
 
   describe '#type' do
     it 'returns :reblog for a Status' do
-      notification = Notification.new(activity: Status.new)
+      notification = described_class.new(activity: Status.new)
       expect(notification.type).to eq :reblog
     end
 
     it 'returns :mention for a Mention' do
-      notification = Notification.new(activity: Mention.new)
+      notification = described_class.new(activity: Mention.new)
       expect(notification.type).to eq :mention
     end
 
     it 'returns :favourite for a Favourite' do
-      notification = Notification.new(activity: Favourite.new)
+      notification = described_class.new(activity: Favourite.new)
       expect(notification.type).to eq :favourite
     end
 
     it 'returns :follow for a Follow' do
-      notification = Notification.new(activity: Follow.new)
+      notification = described_class.new(activity: Follow.new)
       expect(notification.type).to eq :follow
     end
   end
diff --git a/spec/models/relationship_filter_spec.rb b/spec/models/relationship_filter_spec.rb
index 7c0f37a06..b3e855c12 100644
--- a/spec/models/relationship_filter_spec.rb
+++ b/spec/models/relationship_filter_spec.rb
@@ -8,7 +8,7 @@ describe RelationshipFilter do
   describe '#results' do
     context 'when default params are used' do
       let(:subject) do
-        RelationshipFilter.new(account, 'order' => 'active').results
+        described_class.new(account, 'order' => 'active').results
       end
 
       before do
diff --git a/spec/models/report_filter_spec.rb b/spec/models/report_filter_spec.rb
index 8269c4579..4b0852f08 100644
--- a/spec/models/report_filter_spec.rb
+++ b/spec/models/report_filter_spec.rb
@@ -5,7 +5,7 @@ require 'rails_helper'
 describe ReportFilter do
   describe 'with empty params' do
     it 'defaults to unresolved reports list' do
-      filter = ReportFilter.new({})
+      filter = described_class.new({})
 
       expect(filter.results).to eq Report.unresolved
     end
@@ -13,7 +13,7 @@ describe ReportFilter do
 
   describe 'with invalid params' do
     it 'raises with key error' do
-      filter = ReportFilter.new(wrong: true)
+      filter = described_class.new(wrong: true)
 
       expect { filter.results }.to raise_error(/wrong/)
     end
@@ -21,7 +21,7 @@ describe ReportFilter do
 
   describe 'with valid params' do
     it 'combines filters on Report' do
-      filter = ReportFilter.new(account_id: '123', resolved: true, target_account_id: '456')
+      filter = described_class.new(account_id: '123', resolved: true, target_account_id: '456')
 
       allow(Report).to receive(:where).and_return(Report.none)
       allow(Report).to receive(:resolved).and_return(Report.none)
diff --git a/spec/models/session_activation_spec.rb b/spec/models/session_activation_spec.rb
index 51c6aa5cb..052a06e5c 100644
--- a/spec/models/session_activation_spec.rb
+++ b/spec/models/session_activation_spec.rb
@@ -80,7 +80,7 @@ RSpec.describe SessionActivation do
     end
 
     it 'returns an instance of SessionActivation' do
-      expect(described_class.activate(**options)).to be_a SessionActivation
+      expect(described_class.activate(**options)).to be_a described_class
     end
   end
 
diff --git a/spec/models/setting_spec.rb b/spec/models/setting_spec.rb
index accce10f8..bba585cec 100644
--- a/spec/models/setting_spec.rb
+++ b/spec/models/setting_spec.rb
@@ -146,7 +146,7 @@ RSpec.describe Setting do
         it 'includes Setting with value of default_value' do
           setting = described_class.all_as_records[key]
 
-          expect(setting).to be_a Setting
+          expect(setting).to be_a described_class
           expect(setting).to have_attributes(var: key)
           expect(setting).to have_attributes(value: 'default_value')
         end
diff --git a/spec/models/site_upload_spec.rb b/spec/models/site_upload_spec.rb
index d4a929311..9689bce9e 100644
--- a/spec/models/site_upload_spec.rb
+++ b/spec/models/site_upload_spec.rb
@@ -4,7 +4,7 @@ require 'rails_helper'
 
 RSpec.describe SiteUpload do
   describe '#cache_key' do
-    let(:site_upload) { SiteUpload.new(var: 'var') }
+    let(:site_upload) { described_class.new(var: 'var') }
 
     it 'returns cache_key' do
       expect(site_upload.cache_key).to eq 'site_uploads/var'
diff --git a/spec/models/status_pin_spec.rb b/spec/models/status_pin_spec.rb
index 52ce0847c..660b2e92a 100644
--- a/spec/models/status_pin_spec.rb
+++ b/spec/models/status_pin_spec.rb
@@ -8,14 +8,14 @@ RSpec.describe StatusPin do
       account = Fabricate(:account)
       status  = Fabricate(:status, account: account)
 
-      expect(StatusPin.new(account: account, status: status).save).to be true
+      expect(described_class.new(account: account, status: status).save).to be true
     end
 
     it 'does not allow pins of statuses by someone else' do
       account = Fabricate(:account)
       status  = Fabricate(:status)
 
-      expect(StatusPin.new(account: account, status: status).save).to be false
+      expect(described_class.new(account: account, status: status).save).to be false
     end
 
     it 'does not allow pins of reblogs' do
@@ -23,21 +23,21 @@ RSpec.describe StatusPin do
       status  = Fabricate(:status, account: account)
       reblog  = Fabricate(:status, reblog: status)
 
-      expect(StatusPin.new(account: account, status: reblog).save).to be false
+      expect(described_class.new(account: account, status: reblog).save).to be false
     end
 
     it 'does allow pins of direct statuses' do
       account = Fabricate(:account)
       status  = Fabricate(:status, account: account, visibility: :private)
 
-      expect(StatusPin.new(account: account, status: status).save).to be true
+      expect(described_class.new(account: account, status: status).save).to be true
     end
 
     it 'does not allow pins of direct statuses' do
       account = Fabricate(:account)
       status  = Fabricate(:status, account: account, visibility: :direct)
 
-      expect(StatusPin.new(account: account, status: status).save).to be false
+      expect(described_class.new(account: account, status: status).save).to be false
     end
 
     max_pins = 5
@@ -50,10 +50,10 @@ RSpec.describe StatusPin do
       end
 
       max_pins.times do |i|
-        expect(StatusPin.new(account: account, status: status[i]).save).to be true
+        expect(described_class.new(account: account, status: status[i]).save).to be true
       end
 
-      expect(StatusPin.new(account: account, status: status[max_pins]).save).to be false
+      expect(described_class.new(account: account, status: status[max_pins]).save).to be false
     end
 
     it 'allows pins above the max for remote accounts' do
@@ -65,10 +65,10 @@ RSpec.describe StatusPin do
       end
 
       max_pins.times do |i|
-        expect(StatusPin.new(account: account, status: status[i]).save).to be true
+        expect(described_class.new(account: account, status: status[i]).save).to be true
       end
 
-      expect(StatusPin.new(account: account, status: status[max_pins]).save).to be true
+      expect(described_class.new(account: account, status: status[max_pins]).save).to be true
     end
   end
 end
diff --git a/spec/models/status_spec.rb b/spec/models/status_spec.rb
index 84ff82c78..3141c52c0 100644
--- a/spec/models/status_spec.rb
+++ b/spec/models/status_spec.rb
@@ -160,7 +160,7 @@ RSpec.describe Status do
       reblog = Fabricate(:status, account: bob, reblog: subject)
       expect(subject.reblogs_count).to eq 1
       expect { subject.destroy }.to_not raise_error
-      expect(Status.find_by(id: reblog.id)).to be_nil
+      expect(described_class.find_by(id: reblog.id)).to be_nil
     end
   end
 
@@ -206,7 +206,7 @@ RSpec.describe Status do
   end
 
   describe '.mutes_map' do
-    subject { Status.mutes_map([status.conversation.id], account) }
+    subject { described_class.mutes_map([status.conversation.id], account) }
 
     let(:status)  { Fabricate(:status) }
     let(:account) { Fabricate(:account) }
@@ -222,7 +222,7 @@ RSpec.describe Status do
   end
 
   describe '.favourites_map' do
-    subject { Status.favourites_map([status], account) }
+    subject { described_class.favourites_map([status], account) }
 
     let(:status)  { Fabricate(:status) }
     let(:account) { Fabricate(:account) }
@@ -238,7 +238,7 @@ RSpec.describe Status do
   end
 
   describe '.reblogs_map' do
-    subject { Status.reblogs_map([status], account) }
+    subject { described_class.reblogs_map([status], account) }
 
     let(:status)  { Fabricate(:status) }
     let(:account) { Fabricate(:account) }
@@ -265,17 +265,17 @@ RSpec.describe Status do
 
     context 'when given one tag' do
       it 'returns the expected statuses' do
-        expect(Status.tagged_with([tag1.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status5.id)
-        expect(Status.tagged_with([tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status5.id)
-        expect(Status.tagged_with([tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status3.id, status5.id)
+        expect(described_class.tagged_with([tag1.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status5.id)
+        expect(described_class.tagged_with([tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status5.id)
+        expect(described_class.tagged_with([tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status3.id, status5.id)
       end
     end
 
     context 'when given multiple tags' do
       it 'returns the expected statuses' do
-        expect(Status.tagged_with([tag1.id, tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status2.id, status5.id)
-        expect(Status.tagged_with([tag1.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status3.id, status5.id)
-        expect(Status.tagged_with([tag2.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status3.id, status5.id)
+        expect(described_class.tagged_with([tag1.id, tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status2.id, status5.id)
+        expect(described_class.tagged_with([tag1.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status3.id, status5.id)
+        expect(described_class.tagged_with([tag2.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status3.id, status5.id)
       end
     end
   end
@@ -292,17 +292,17 @@ RSpec.describe Status do
 
     context 'when given one tag' do
       it 'returns the expected statuses' do
-        expect(Status.tagged_with_all([tag1.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status5.id)
-        expect(Status.tagged_with_all([tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status5.id)
-        expect(Status.tagged_with_all([tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status3.id)
+        expect(described_class.tagged_with_all([tag1.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status5.id)
+        expect(described_class.tagged_with_all([tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status5.id)
+        expect(described_class.tagged_with_all([tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status3.id)
       end
     end
 
     context 'when given multiple tags' do
       it 'returns the expected statuses' do
-        expect(Status.tagged_with_all([tag1.id, tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status5.id)
-        expect(Status.tagged_with_all([tag1.id, tag3.id]).reorder(:id).pluck(:id).uniq).to eq []
-        expect(Status.tagged_with_all([tag2.id, tag3.id]).reorder(:id).pluck(:id).uniq).to eq []
+        expect(described_class.tagged_with_all([tag1.id, tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status5.id)
+        expect(described_class.tagged_with_all([tag1.id, tag3.id]).reorder(:id).pluck(:id).uniq).to eq []
+        expect(described_class.tagged_with_all([tag2.id, tag3.id]).reorder(:id).pluck(:id).uniq).to eq []
       end
     end
   end
@@ -319,17 +319,17 @@ RSpec.describe Status do
 
     context 'when given one tag' do
       it 'returns the expected statuses' do
-        expect(Status.tagged_with_none([tag1.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status3.id, status4.id)
-        expect(Status.tagged_with_none([tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status3.id, status4.id)
-        expect(Status.tagged_with_none([tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status2.id, status4.id)
+        expect(described_class.tagged_with_none([tag1.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status3.id, status4.id)
+        expect(described_class.tagged_with_none([tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status3.id, status4.id)
+        expect(described_class.tagged_with_none([tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status2.id, status4.id)
       end
     end
 
     context 'when given multiple tags' do
       it 'returns the expected statuses' do
-        expect(Status.tagged_with_none([tag1.id, tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status3.id, status4.id)
-        expect(Status.tagged_with_none([tag1.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status4.id)
-        expect(Status.tagged_with_none([tag2.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status4.id)
+        expect(described_class.tagged_with_none([tag1.id, tag2.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status3.id, status4.id)
+        expect(described_class.tagged_with_none([tag1.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status2.id, status4.id)
+        expect(described_class.tagged_with_none([tag2.id, tag3.id]).reorder(:id).pluck(:id).uniq).to contain_exactly(status1.id, status4.id)
       end
     end
   end
@@ -344,21 +344,21 @@ RSpec.describe Status do
     end
 
     it 'creates new conversation for stand-alone status' do
-      expect(Status.create(account: alice, text: 'First').conversation_id).to_not be_nil
+      expect(described_class.create(account: alice, text: 'First').conversation_id).to_not be_nil
     end
 
     it 'keeps conversation of parent node' do
       parent = Fabricate(:status, text: 'First')
-      expect(Status.create(account: alice, thread: parent, text: 'Response').conversation_id).to eq parent.conversation_id
+      expect(described_class.create(account: alice, thread: parent, text: 'Response').conversation_id).to eq parent.conversation_id
     end
 
     it 'sets `local` to true for status by local account' do
-      expect(Status.create(account: alice, text: 'foo').local).to be true
+      expect(described_class.create(account: alice, text: 'foo').local).to be true
     end
 
     it 'sets `local` to false for status by remote account' do
       alice.update(domain: 'example.com')
-      expect(Status.create(account: alice, text: 'foo').local).to be false
+      expect(described_class.create(account: alice, text: 'foo').local).to be false
     end
   end
 
@@ -372,7 +372,7 @@ RSpec.describe Status do
 
   describe 'after_create' do
     it 'saves ActivityPub uri as uri for local status' do
-      status = Status.create(account: alice, text: 'foo')
+      status = described_class.create(account: alice, text: 'foo')
       status.reload
       expect(status.uri).to start_with('https://')
     end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index d3e0ac63a..554e7efb6 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -57,7 +57,7 @@ RSpec.describe User do
       it 'returns an array of recent users ordered by id' do
         user_1 = Fabricate(:user)
         user_2 = Fabricate(:user)
-        expect(User.recent).to eq [user_2, user_1]
+        expect(described_class.recent).to eq [user_2, user_1]
       end
     end
 
@@ -65,7 +65,7 @@ RSpec.describe User do
       it 'returns an array of users who are confirmed' do
         user_1 = Fabricate(:user, confirmed_at: nil)
         user_2 = Fabricate(:user, confirmed_at: Time.zone.now)
-        expect(User.confirmed).to contain_exactly(user_2)
+        expect(described_class.confirmed).to contain_exactly(user_2)
       end
     end
 
@@ -74,7 +74,7 @@ RSpec.describe User do
         specified = Fabricate(:user, current_sign_in_at: 15.days.ago)
         Fabricate(:user, current_sign_in_at: 6.days.ago)
 
-        expect(User.inactive).to contain_exactly(specified)
+        expect(described_class.inactive).to contain_exactly(specified)
       end
     end
 
@@ -83,7 +83,7 @@ RSpec.describe User do
         specified = Fabricate(:user, email: 'specified@spec')
         Fabricate(:user, email: 'unspecified@spec')
 
-        expect(User.matches_email('specified')).to contain_exactly(specified)
+        expect(described_class.matches_email('specified')).to contain_exactly(specified)
       end
     end
 
@@ -96,7 +96,7 @@ RSpec.describe User do
         Fabricate(:session_activation, user: user2, ip: '2160:8888::24', session_id: '3')
         Fabricate(:session_activation, user: user2, ip: '2160:8888::25', session_id: '4')
 
-        expect(User.matches_ip('2160:2160::/32')).to contain_exactly(user1)
+        expect(described_class.matches_ip('2160:2160::/32')).to contain_exactly(user1)
       end
     end
   end
@@ -113,19 +113,19 @@ RSpec.describe User do
     end
 
     it 'allows a non-blacklisted user to be created' do
-      user = User.new(email: 'foo@example.com', account: account, password: password, agreement: true)
+      user = described_class.new(email: 'foo@example.com', account: account, password: password, agreement: true)
 
       expect(user).to be_valid
     end
 
     it 'does not allow a blacklisted user to be created' do
-      user = User.new(email: 'foo@mvrht.com', account: account, password: password, agreement: true)
+      user = described_class.new(email: 'foo@mvrht.com', account: account, password: password, agreement: true)
 
       expect(user).to_not be_valid
     end
 
     it 'does not allow a subdomain blacklisted user to be created' do
-      user = User.new(email: 'foo@mvrht.com.topdomain.tld', account: account, password: password, agreement: true)
+      user = described_class.new(email: 'foo@mvrht.com.topdomain.tld', account: account, password: password, agreement: true)
 
       expect(user).to_not be_valid
     end
@@ -349,17 +349,17 @@ RSpec.describe User do
     end
 
     it 'does not allow a user to be created unless they are whitelisted' do
-      user = User.new(email: 'foo@example.com', account: account, password: password, agreement: true)
+      user = described_class.new(email: 'foo@example.com', account: account, password: password, agreement: true)
       expect(user).to_not be_valid
     end
 
     it 'allows a user to be created if they are whitelisted' do
-      user = User.new(email: 'foo@mastodon.space', account: account, password: password, agreement: true)
+      user = described_class.new(email: 'foo@mastodon.space', account: account, password: password, agreement: true)
       expect(user).to be_valid
     end
 
     it 'does not allow a user with a whitelisted top domain as subdomain in their email address to be created' do
-      user = User.new(email: 'foo@mastodon.space.userdomain.com', account: account, password: password, agreement: true)
+      user = described_class.new(email: 'foo@mastodon.space.userdomain.com', account: account, password: password, agreement: true)
       expect(user).to_not be_valid
     end
 
@@ -373,7 +373,7 @@ RSpec.describe User do
       it 'does not allow a user to be created with a specific blacklisted subdomain even if the top domain is whitelisted' do
         Rails.configuration.x.email_domains_blacklist = 'blacklisted.mastodon.space'
 
-        user = User.new(email: 'foo@blacklisted.mastodon.space', account: account, password: password)
+        user = described_class.new(email: 'foo@blacklisted.mastodon.space', account: account, password: password)
         expect(user).to_not be_valid
       end
     end
@@ -527,19 +527,19 @@ RSpec.describe User do
   end
 
   describe '.those_who_can' do
-    let!(:moderator_user) { Fabricate(:user, role: UserRole.find_by(name: 'Moderator')) }
+    before { Fabricate(:user, role: UserRole.find_by(name: 'Moderator')) }
 
     context 'when there are not any user roles' do
       before { UserRole.destroy_all }
 
       it 'returns an empty list' do
-        expect(User.those_who_can(:manage_blocks)).to eq([])
+        expect(described_class.those_who_can(:manage_blocks)).to eq([])
       end
     end
 
     context 'when there are not users with the needed role' do
       it 'returns an empty list' do
-        expect(User.those_who_can(:manage_blocks)).to eq([])
+        expect(described_class.those_who_can(:manage_blocks)).to eq([])
       end
     end
 
@@ -547,7 +547,7 @@ RSpec.describe User do
       let!(:admin_user) { Fabricate(:user, role: UserRole.find_by(name: 'Admin')) }
 
       it 'returns the users with the role' do
-        expect(User.those_who_can(:manage_blocks)).to eq([admin_user])
+        expect(described_class.those_who_can(:manage_blocks)).to eq([admin_user])
       end
     end
   end
diff --git a/spec/policies/account_moderation_note_policy_spec.rb b/spec/policies/account_moderation_note_policy_spec.rb
index 03d18250b..90abdfea7 100644
--- a/spec/policies/account_moderation_note_policy_spec.rb
+++ b/spec/policies/account_moderation_note_policy_spec.rb
@@ -11,13 +11,13 @@ RSpec.describe AccountModerationNotePolicy do
   permissions :create? do
     context 'when staff' do
       it 'grants to create' do
-        expect(subject).to permit(admin, AccountModerationNotePolicy)
+        expect(subject).to permit(admin, described_class)
       end
     end
 
     context 'when not staff' do
       it 'denies to create' do
-        expect(subject).to_not permit(john, AccountModerationNotePolicy)
+        expect(subject).to_not permit(john, described_class)
       end
     end
   end
diff --git a/spec/presenters/account_relationships_presenter_spec.rb b/spec/presenters/account_relationships_presenter_spec.rb
index d59060bd5..5c2ba54e0 100644
--- a/spec/presenters/account_relationships_presenter_spec.rb
+++ b/spec/presenters/account_relationships_presenter_spec.rb
@@ -14,7 +14,7 @@ RSpec.describe AccountRelationshipsPresenter do
       allow(Account).to receive(:domain_blocking_map).with(account_ids, current_account_id).and_return(default_map)
     end
 
-    let(:presenter)          { AccountRelationshipsPresenter.new(account_ids, current_account_id, **options) }
+    let(:presenter)          { described_class.new(account_ids, current_account_id, **options) }
     let(:current_account_id) { Fabricate(:account).id }
     let(:account_ids)        { [Fabricate(:account).id] }
     let(:default_map)        { { 1 => true } }
diff --git a/spec/presenters/status_relationships_presenter_spec.rb b/spec/presenters/status_relationships_presenter_spec.rb
index a62fa004a..7746c8cd7 100644
--- a/spec/presenters/status_relationships_presenter_spec.rb
+++ b/spec/presenters/status_relationships_presenter_spec.rb
@@ -12,7 +12,7 @@ RSpec.describe StatusRelationshipsPresenter do
       allow(Status).to receive(:pins_map).with(anything, current_account_id).and_return(default_map)
     end
 
-    let(:presenter)          { StatusRelationshipsPresenter.new(statuses, current_account_id, **options) }
+    let(:presenter)          { described_class.new(statuses, current_account_id, **options) }
     let(:current_account_id) { Fabricate(:account).id }
     let(:statuses)           { [Fabricate(:status)] }
     let(:status_ids)         { statuses.map(&:id) + statuses.filter_map(&:reblog_of_id) }
diff --git a/spec/serializers/activitypub/note_serializer_spec.rb b/spec/serializers/activitypub/note_serializer_spec.rb
index 7ea47baef..68f537891 100644
--- a/spec/serializers/activitypub/note_serializer_spec.rb
+++ b/spec/serializers/activitypub/note_serializer_spec.rb
@@ -15,7 +15,7 @@ describe ActivityPub::NoteSerializer do
   let!(:reply5)  { Fabricate(:status, account: account, thread: parent, visibility: :direct) }
 
   before(:each) do
-    @serialization = ActiveModelSerializers::SerializableResource.new(parent, serializer: ActivityPub::NoteSerializer, adapter: ActivityPub::Adapter)
+    @serialization = ActiveModelSerializers::SerializableResource.new(parent, serializer: described_class, adapter: ActivityPub::Adapter)
   end
 
   it 'has a Note type' do
diff --git a/spec/serializers/activitypub/update_poll_serializer_spec.rb b/spec/serializers/activitypub/update_poll_serializer_spec.rb
index 4360808b5..14c24c70c 100644
--- a/spec/serializers/activitypub/update_poll_serializer_spec.rb
+++ b/spec/serializers/activitypub/update_poll_serializer_spec.rb
@@ -10,7 +10,7 @@ describe ActivityPub::UpdatePollSerializer do
   let!(:status) { Fabricate(:status, account: account, poll: poll) }
 
   before(:each) do
-    @serialization = ActiveModelSerializers::SerializableResource.new(status, serializer: ActivityPub::UpdatePollSerializer, adapter: ActivityPub::Adapter)
+    @serialization = ActiveModelSerializers::SerializableResource.new(status, serializer: described_class, adapter: ActivityPub::Adapter)
   end
 
   it 'has a Update type' do
diff --git a/spec/serializers/rest/account_serializer_spec.rb b/spec/serializers/rest/account_serializer_spec.rb
index 528639943..e399e88f3 100644
--- a/spec/serializers/rest/account_serializer_spec.rb
+++ b/spec/serializers/rest/account_serializer_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 describe REST::AccountSerializer do
-  subject { JSON.parse(ActiveModelSerializers::SerializableResource.new(account, serializer: REST::AccountSerializer).to_json) }
+  subject { JSON.parse(ActiveModelSerializers::SerializableResource.new(account, serializer: described_class).to_json) }
 
   let(:role)    { Fabricate(:user_role, name: 'Role', highlighted: true) }
   let(:user)    { Fabricate(:user, role: role) }
diff --git a/spec/services/activitypub/fetch_remote_account_service_spec.rb b/spec/services/activitypub/fetch_remote_account_service_spec.rb
index 868bc2a58..ac7484d96 100644
--- a/spec/services/activitypub/fetch_remote_account_service_spec.rb
+++ b/spec/services/activitypub/fetch_remote_account_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe ActivityPub::FetchRemoteAccountService, type: :service do
-  subject { ActivityPub::FetchRemoteAccountService.new }
+  subject { described_class.new }
 
   let!(:actor) do
     {
diff --git a/spec/services/activitypub/fetch_remote_actor_service_spec.rb b/spec/services/activitypub/fetch_remote_actor_service_spec.rb
index a72c6941e..93d31b69d 100644
--- a/spec/services/activitypub/fetch_remote_actor_service_spec.rb
+++ b/spec/services/activitypub/fetch_remote_actor_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe ActivityPub::FetchRemoteActorService, type: :service do
-  subject { ActivityPub::FetchRemoteActorService.new }
+  subject { described_class.new }
 
   let!(:actor) do
     {
diff --git a/spec/services/activitypub/fetch_remote_key_service_spec.rb b/spec/services/activitypub/fetch_remote_key_service_spec.rb
index 0ec0c2736..cd8f29ddd 100644
--- a/spec/services/activitypub/fetch_remote_key_service_spec.rb
+++ b/spec/services/activitypub/fetch_remote_key_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe ActivityPub::FetchRemoteKeyService, type: :service do
-  subject { ActivityPub::FetchRemoteKeyService.new }
+  subject { described_class.new }
 
   let(:webfinger) { { subject: 'acct:alice@example.com', links: [{ rel: 'self', href: 'https://example.com/alice' }] } }
 
diff --git a/spec/services/after_block_domain_from_account_service_spec.rb b/spec/services/after_block_domain_from_account_service_spec.rb
index b75f92372..9bfaa3580 100644
--- a/spec/services/after_block_domain_from_account_service_spec.rb
+++ b/spec/services/after_block_domain_from_account_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe AfterBlockDomainFromAccountService, type: :service do
-  subject { AfterBlockDomainFromAccountService.new }
+  subject { described_class.new }
 
   let!(:wolf) { Fabricate(:account, username: 'wolf', domain: 'evil.org', inbox_url: 'https://evil.org/inbox', protocol: :activitypub) }
   let!(:alice) { Fabricate(:account, username: 'alice') }
diff --git a/spec/services/authorize_follow_service_spec.rb b/spec/services/authorize_follow_service_spec.rb
index 63d9e2a0f..d07645ab6 100644
--- a/spec/services/authorize_follow_service_spec.rb
+++ b/spec/services/authorize_follow_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe AuthorizeFollowService, type: :service do
-  subject { AuthorizeFollowService.new }
+  subject { described_class.new }
 
   let(:sender) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/batched_remove_status_service_spec.rb b/spec/services/batched_remove_status_service_spec.rb
index 9bedf3744..c0cd01315 100644
--- a/spec/services/batched_remove_status_service_spec.rb
+++ b/spec/services/batched_remove_status_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe BatchedRemoveStatusService, type: :service do
-  subject { BatchedRemoveStatusService.new }
+  subject { described_class.new }
 
   let!(:alice)  { Fabricate(:account) }
   let!(:bob)    { Fabricate(:account, username: 'bob', domain: 'example.com') }
diff --git a/spec/services/block_domain_service_spec.rb b/spec/services/block_domain_service_spec.rb
index 0ab97b8ce..93722a15b 100644
--- a/spec/services/block_domain_service_spec.rb
+++ b/spec/services/block_domain_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe BlockDomainService, type: :service do
-  subject { BlockDomainService.new }
+  subject { described_class.new }
 
   let!(:bad_account) { Fabricate(:account, username: 'badguy666', domain: 'evil.org') }
   let!(:bad_status1) { Fabricate(:status, account: bad_account, text: 'You suck') }
diff --git a/spec/services/block_service_spec.rb b/spec/services/block_service_spec.rb
index 75f07f5ad..5f7c2e8da 100644
--- a/spec/services/block_service_spec.rb
+++ b/spec/services/block_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe BlockService, type: :service do
-  subject { BlockService.new }
+  subject { described_class.new }
 
   let(:sender) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/bootstrap_timeline_service_spec.rb b/spec/services/bootstrap_timeline_service_spec.rb
index 670ac652f..5a15ba741 100644
--- a/spec/services/bootstrap_timeline_service_spec.rb
+++ b/spec/services/bootstrap_timeline_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe BootstrapTimelineService, type: :service do
-  subject { BootstrapTimelineService.new }
+  subject { described_class.new }
 
   context 'when the new user has registered from an invite' do
     let(:service)    { double }
diff --git a/spec/services/clear_domain_media_service_spec.rb b/spec/services/clear_domain_media_service_spec.rb
index 987507579..2a00409a4 100644
--- a/spec/services/clear_domain_media_service_spec.rb
+++ b/spec/services/clear_domain_media_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe ClearDomainMediaService, type: :service do
-  subject { ClearDomainMediaService.new }
+  subject { described_class.new }
 
   let!(:bad_account) { Fabricate(:account, username: 'badguy666', domain: 'evil.org') }
   let!(:bad_status1) { Fabricate(:status, account: bad_account, text: 'You suck') }
diff --git a/spec/services/favourite_service_spec.rb b/spec/services/favourite_service_spec.rb
index 613ae203e..782c235c4 100644
--- a/spec/services/favourite_service_spec.rb
+++ b/spec/services/favourite_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe FavouriteService, type: :service do
-  subject { FavouriteService.new }
+  subject { described_class.new }
 
   let(:sender) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/follow_service_spec.rb b/spec/services/follow_service_spec.rb
index c9521e3c8..c2ad0d717 100644
--- a/spec/services/follow_service_spec.rb
+++ b/spec/services/follow_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe FollowService, type: :service do
-  subject { FollowService.new }
+  subject { described_class.new }
 
   let(:sender) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/import_service_spec.rb b/spec/services/import_service_spec.rb
index 7f8e5855f..32ba4409c 100644
--- a/spec/services/import_service_spec.rb
+++ b/spec/services/import_service_spec.rb
@@ -14,7 +14,7 @@ RSpec.describe ImportService, type: :service do
   end
 
   context 'when importing old-style list of muted users' do
-    subject { ImportService.new }
+    subject { described_class.new }
 
     let(:csv) { attachment_fixture('mute-imports.txt') }
 
@@ -52,7 +52,7 @@ RSpec.describe ImportService, type: :service do
   end
 
   context 'when importing new-style list of muted users' do
-    subject { ImportService.new }
+    subject { described_class.new }
 
     let(:csv) { attachment_fixture('new-mute-imports.txt') }
 
@@ -93,7 +93,7 @@ RSpec.describe ImportService, type: :service do
   end
 
   context 'when importing old-style list of followed users' do
-    subject { ImportService.new }
+    subject { described_class.new }
 
     let(:csv) { attachment_fixture('mute-imports.txt') }
 
@@ -135,7 +135,7 @@ RSpec.describe ImportService, type: :service do
   end
 
   context 'when importing new-style list of followed users' do
-    subject { ImportService.new }
+    subject { described_class.new }
 
     let(:csv) { attachment_fixture('new-following-imports.txt') }
 
@@ -182,7 +182,7 @@ RSpec.describe ImportService, type: :service do
   #
   # https://github.com/mastodon/mastodon/issues/20571
   context 'with a utf-8 encoded domains' do
-    subject { ImportService.new }
+    subject { described_class.new }
 
     let!(:nare) { Fabricate(:account, username: 'nare', domain: 'թութ.հայ', locked: false, protocol: :activitypub, inbox_url: 'https://թութ.հայ/inbox') }
     let(:csv) { attachment_fixture('utf8-followers.txt') }
@@ -201,7 +201,7 @@ RSpec.describe ImportService, type: :service do
   end
 
   context 'when importing bookmarks' do
-    subject { ImportService.new }
+    subject { described_class.new }
 
     let(:csv) { attachment_fixture('bookmark-imports.txt') }
     let(:local_account)  { Fabricate(:account, username: 'foo', domain: '') }
diff --git a/spec/services/post_status_service_spec.rb b/spec/services/post_status_service_spec.rb
index f57712271..76ef5391f 100644
--- a/spec/services/post_status_service_spec.rb
+++ b/spec/services/post_status_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe PostStatusService, type: :service do
-  subject { PostStatusService.new }
+  subject { described_class.new }
 
   it 'creates a new status' do
     account = Fabricate(:account)
diff --git a/spec/services/precompute_feed_service_spec.rb b/spec/services/precompute_feed_service_spec.rb
index 18ba00244..54e0d94ee 100644
--- a/spec/services/precompute_feed_service_spec.rb
+++ b/spec/services/precompute_feed_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe PrecomputeFeedService, type: :service do
-  subject { PrecomputeFeedService.new }
+  subject { described_class.new }
 
   describe 'call' do
     let(:account) { Fabricate(:account) }
diff --git a/spec/services/process_mentions_service_spec.rb b/spec/services/process_mentions_service_spec.rb
index 399800b2a..a28b6db40 100644
--- a/spec/services/process_mentions_service_spec.rb
+++ b/spec/services/process_mentions_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe ProcessMentionsService, type: :service do
-  subject { ProcessMentionsService.new }
+  subject { described_class.new }
 
   let(:account) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/purge_domain_service_spec.rb b/spec/services/purge_domain_service_spec.rb
index 310affa5e..89ab4d8d9 100644
--- a/spec/services/purge_domain_service_spec.rb
+++ b/spec/services/purge_domain_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe PurgeDomainService, type: :service do
-  subject { PurgeDomainService.new }
+  subject { described_class.new }
 
   let!(:old_account) { Fabricate(:account, domain: 'obsolete.org') }
   let!(:old_status1) { Fabricate(:status, account: old_account) }
diff --git a/spec/services/reblog_service_spec.rb b/spec/services/reblog_service_spec.rb
index 69500848d..7b85e37ed 100644
--- a/spec/services/reblog_service_spec.rb
+++ b/spec/services/reblog_service_spec.rb
@@ -6,7 +6,7 @@ RSpec.describe ReblogService, type: :service do
   let(:alice)  { Fabricate(:account, username: 'alice') }
 
   context 'when creates a reblog with appropriate visibility' do
-    subject { ReblogService.new }
+    subject { described_class.new }
 
     let(:visibility)        { :public }
     let(:reblog_visibility) { :public }
@@ -62,7 +62,7 @@ RSpec.describe ReblogService, type: :service do
   end
 
   context 'with ActivityPub' do
-    subject { ReblogService.new }
+    subject { described_class.new }
 
     let(:bob)    { Fabricate(:account, username: 'bob', protocol: :activitypub, domain: 'example.com', inbox_url: 'http://example.com/inbox') }
     let(:status) { Fabricate(:status, account: bob) }
diff --git a/spec/services/reject_follow_service_spec.rb b/spec/services/reject_follow_service_spec.rb
index be9363d84..d28104b2c 100644
--- a/spec/services/reject_follow_service_spec.rb
+++ b/spec/services/reject_follow_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe RejectFollowService, type: :service do
-  subject { RejectFollowService.new }
+  subject { described_class.new }
 
   let(:sender) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/remove_from_followers_service_spec.rb b/spec/services/remove_from_followers_service_spec.rb
index 21cea2e4f..1b29cdcbe 100644
--- a/spec/services/remove_from_followers_service_spec.rb
+++ b/spec/services/remove_from_followers_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe RemoveFromFollowersService, type: :service do
-  subject { RemoveFromFollowersService.new }
+  subject { described_class.new }
 
   let(:bob) { Fabricate(:account, username: 'bob') }
 
diff --git a/spec/services/remove_status_service_spec.rb b/spec/services/remove_status_service_spec.rb
index a836109a0..77b01d307 100644
--- a/spec/services/remove_status_service_spec.rb
+++ b/spec/services/remove_status_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe RemoveStatusService, type: :service do
-  subject { RemoveStatusService.new }
+  subject { described_class.new }
 
   let!(:alice)  { Fabricate(:account) }
   let!(:bob)    { Fabricate(:account, username: 'bob', domain: 'example.com') }
diff --git a/spec/services/unallow_domain_service_spec.rb b/spec/services/unallow_domain_service_spec.rb
index fbc1d5959..4db718d07 100644
--- a/spec/services/unallow_domain_service_spec.rb
+++ b/spec/services/unallow_domain_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe UnallowDomainService, type: :service do
-  subject { UnallowDomainService.new }
+  subject { described_class.new }
 
   let!(:bad_account) { Fabricate(:account, username: 'badguy666', domain: 'evil.org') }
   let!(:bad_status1) { Fabricate(:status, account: bad_account, text: 'You suck') }
diff --git a/spec/services/unblock_service_spec.rb b/spec/services/unblock_service_spec.rb
index 8098d7e6d..86632c393 100644
--- a/spec/services/unblock_service_spec.rb
+++ b/spec/services/unblock_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe UnblockService, type: :service do
-  subject { UnblockService.new }
+  subject { described_class.new }
 
   let(:sender) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/unfollow_service_spec.rb b/spec/services/unfollow_service_spec.rb
index a12f01fa5..3e65e610b 100644
--- a/spec/services/unfollow_service_spec.rb
+++ b/spec/services/unfollow_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe UnfollowService, type: :service do
-  subject { UnfollowService.new }
+  subject { described_class.new }
 
   let(:sender) { Fabricate(:account, username: 'alice') }
 
diff --git a/spec/services/unmute_service_spec.rb b/spec/services/unmute_service_spec.rb
index 2edb6cfc2..236f837e2 100644
--- a/spec/services/unmute_service_spec.rb
+++ b/spec/services/unmute_service_spec.rb
@@ -3,5 +3,5 @@
 require 'rails_helper'
 
 RSpec.describe UnmuteService, type: :service do
-  subject { UnmuteService.new }
+  subject { described_class.new }
 end
diff --git a/spec/services/update_account_service_spec.rb b/spec/services/update_account_service_spec.rb
index a711a8ae7..6318cc95f 100644
--- a/spec/services/update_account_service_spec.rb
+++ b/spec/services/update_account_service_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 RSpec.describe UpdateAccountService, type: :service do
-  subject { UpdateAccountService.new }
+  subject { described_class.new }
 
   describe 'switching form locked to unlocked accounts' do
     let(:account) { Fabricate(:account, locked: true) }
diff --git a/spec/validators/note_length_validator_spec.rb b/spec/validators/note_length_validator_spec.rb
index 390ac8d90..e45d221d7 100644
--- a/spec/validators/note_length_validator_spec.rb
+++ b/spec/validators/note_length_validator_spec.rb
@@ -3,7 +3,7 @@
 require 'rails_helper'
 
 describe NoteLengthValidator do
-  subject { NoteLengthValidator.new(attributes: { note: true }, maximum: 500) }
+  subject { described_class.new(attributes: { note: true }, maximum: 500) }
 
   describe '#validate' do
     it 'adds an error when text is over 500 characters' do