Initial open source release

internal/app/files/blobfs_test.go

@@ -0,0 +1,92 @@
+package files
+
+import (
+	"bytes"
+	"context"
+	"testing"
+)
+
+func TestLocalFSPutGetRoundTrip(t *testing.T) {
+	fs, err := NewLocalFS(t.TempDir())
+	if err != nil {
+		t.Fatalf("new local fs: %v", err)
+	}
+	ctx := context.Background()
+	data := []byte("hello telesrv media blob 你好")
+
+	key, err := fs.Put(ctx, data)
+	if err != nil {
+		t.Fatalf("put: %v", err)
+	}
+	if key == "" {
+		t.Fatal("empty object key")
+	}
+
+	// 内容寻址：相同内容应得到相同 key（去重）。
+	key2, err := fs.Put(ctx, data)
+	if err != nil {
+		t.Fatalf("put again: %v", err)
+	}
+	if key != key2 {
+		t.Fatalf("expected dedup key %q == %q", key, key2)
+	}
+
+	got, err := fs.Get(ctx, key)
+	if err != nil {
+		t.Fatalf("get: %v", err)
+	}
+	if !bytes.Equal(got, data) {
+		t.Fatalf("roundtrip mismatch: got %q want %q", got, data)
+	}
+}
+
+func TestLocalFSDistinctContent(t *testing.T) {
+	fs, err := NewLocalFS(t.TempDir())
+	if err != nil {
+		t.Fatalf("new local fs: %v", err)
+	}
+	ctx := context.Background()
+	k1, _ := fs.Put(ctx, []byte("aaa"))
+	k2, _ := fs.Put(ctx, []byte("bbb"))
+	if k1 == k2 {
+		t.Fatal("distinct content must yield distinct keys")
+	}
+}
+
+func TestLocalFSGetRange(t *testing.T) {
+	fs, err := NewLocalFS(t.TempDir())
+	if err != nil {
+		t.Fatalf("new local fs: %v", err)
+	}
+	ctx := context.Background()
+	key, err := fs.Put(ctx, []byte("0123456789"))
+	if err != nil {
+		t.Fatalf("put: %v", err)
+	}
+	cases := []struct {
+		name          string
+		offset, limit int64
+		want          string
+	}{
+		{"head", 0, 4, "0123"},
+		{"middle", 3, 4, "3456"},
+		{"limit-exceeds-remaining", 7, 100, "789"},
+		{"zero-limit-reads-to-end", 2, 0, "23456789"},
+		{"offset-at-end", 10, 5, ""},
+		{"offset-past-end", 20, 5, ""},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			data, total, err := fs.GetRange(ctx, key, tc.offset, tc.limit)
+			if err != nil {
+				t.Fatalf("getrange: %v", err)
+			}
+			if string(data) != tc.want {
+				t.Errorf("data = %q, want %q", data, tc.want)
+			}
+			if total != 10 {
+				t.Errorf("total = %d, want 10", total)
+			}
+		})
+	}
+}