Unit Testing (#35)

* add testing lib * remove coverage folder from git * finished basic test setup * fix tests typescript and import paths * add first snapshot * testing utils * rename test files; update script flags; ++tests * testing utils functions * testing downloadAndResize wip * remove download test * specify unwanted coverage paths; remove update snapshots flag * fix strings tests * testing downloadAndResize method * increasing testing * fixing snapshots wip * fixed shell mobile snapshot * adding snapshots for the screens * fix onboard snapshot * fix typescript issues * fix TabsSelector snapshot * Account for testing device's locale in ago() tests * Remove platform detection on regex * mocking store state wip * mocking store state * increasing test coverage * increasing test coverage * increasing test coverage on src/screens * src/screens (except for profile) above 80% cov * testing profile screen wip * increase coverage on Menu and TabsSelector * mocking profile ui state wip * mocking profile ui state wip * fixing mobileshell tests wip * snapshots using testing-library * fixing profile tests wip * removing mobile shell tests * src/view/com tests wip * remove unnecessary patch-package * fixed profile test error * clear mocks after every test * fix base mocked store values (getters) * fix base mocked store values (hasLoaded, nonReplyFeed) * profile screen above 80% coverage * testing custom hooks * improving composer coverage * fix tests after merge * finishing composer coverage * improving src/com/discover coverage * improve src/view/com/login coverage fix SuggestedFollows tests adding some comments * fix SuggestedFollows tests * improve src/view/com/profile coverage extra minor fixes * improve src/view/com/notifications coverage * update coverage ignore patterns * rename errorMessageTryAgainButton increase SuggestedFollows converage * improve src/view/com/posts coverage * improve src/view/com/onboard coverage * update snapshot * improve src/view/com/post coverage * improve src/view/com/post-thread coverage rename ErrorMessage tests test Debug and Log components * init testing state * testing root-store * updating comments * small fixes * removed extra console logs * improve src/state/models coverage refactor rootStore rename some spies * adding cleanup method after tests * improve src/state/models coverage * improve src/state/models coverage * improve src/state/models coverage * improve src/state/models coverage * test setInterval in setupState * Clean up tests and update Home screen state management * Remove some tests we dont need * Remove snapshot tests * Remove any tests that dont demonstrate clear value * Cleanup Co-authored-by: Paul Frazee <pfrazee@gmail.com>
2023-01-17 16:06:00 +00:00 · 2023-01-17 16:06:00 +00:00 · 5abcc8e336
commit 5abcc8e336
parent 11c861d2d3
95 changed files with 2852 additions and 9936 deletions
--- a/tests/state/models/link-metas-view.test.ts
+++ b/tests/state/models/link-metas-view.test.ts
@ -0,0 +1,72 @@
+import {RootStoreModel} from '../../../src/state/models/root-store'
+import {LinkMetasViewModel} from '../../../src/state/models/link-metas-view'
+import * as LinkMetaLib from '../../../src/lib/link-meta'
+import {LikelyType} from './../../../src/lib/link-meta'
+import {sessionClient, SessionServiceClient} from '@atproto/api'
+import {DEFAULT_SERVICE} from '../../../src/state'
+
+describe('LinkMetasViewModel', () => {
+  let viewModel: LinkMetasViewModel
+  let rootStore: RootStoreModel
+
+  const getLinkMetaMockSpy = jest.spyOn(LinkMetaLib, 'getLinkMeta')
+  const mockedMeta = {
+    title: 'Test Title',
+    url: 'testurl',
+    likelyType: LikelyType.Other,
+  }
+
+  beforeEach(() => {
+    const api = sessionClient.service(DEFAULT_SERVICE) as SessionServiceClient
+    rootStore = new RootStoreModel(api)
+    viewModel = new LinkMetasViewModel(rootStore)
+  })
+
+  afterAll(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('getLinkMeta', () => {
+    it('should return link meta if it is cached', async () => {
+      const url = 'http://example.com'
+
+      viewModel.cache.set(url, mockedMeta)
+
+      const result = await viewModel.getLinkMeta(url)
+
+      expect(getLinkMetaMockSpy).not.toHaveBeenCalled()
+      expect(result).toEqual(mockedMeta)
+    })
+
+    it('should return link meta if it is not cached', async () => {
+      getLinkMetaMockSpy.mockResolvedValueOnce(mockedMeta)
+
+      const result = await viewModel.getLinkMeta(mockedMeta.url)
+
+      expect(getLinkMetaMockSpy).toHaveBeenCalledWith(mockedMeta.url)
+      expect(result).toEqual(mockedMeta)
+    })
+
+    it('should cache the link meta if it is successfully returned', async () => {
+      getLinkMetaMockSpy.mockResolvedValueOnce(mockedMeta)
+
+      await viewModel.getLinkMeta(mockedMeta.url)
+
+      expect(viewModel.cache.get(mockedMeta.url)).toEqual(mockedMeta)
+    })
+
+    it('should not cache the link meta if it fails to return', async () => {
+      const url = 'http://example.com'
+      const error = new Error('Failed to fetch link meta')
+      getLinkMetaMockSpy.mockRejectedValueOnce(error)
+
+      try {
+        await viewModel.getLinkMeta(url)
+        fail('Error was not thrown')
+      } catch (e) {
+        expect(e).toEqual(error)
+        expect(viewModel.cache.get(url)).toBeUndefined()
+      }
+    })
+  })
+})