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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| package testutil | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "io" | ||
| "io/fs" | ||
| "os" | ||
| "path/filepath" | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func updateGoldenDir(t *testing.T, resultDir, goldenDir string) { | ||
| t.Helper() | ||
| if os.Getenv("UPDATE_GOLDEN") == "" { | ||
| return | ||
| } | ||
| require.NoError(t, os.RemoveAll(goldenDir)) | ||
| err := filepath.WalkDir(resultDir, func(path string, d fs.DirEntry, err error) error { | ||
| if err != nil || d.IsDir() { | ||
| return err | ||
| } | ||
| fmt.Println(path) | ||
| relName := mustRel(t, resultDir, path) | ||
| return copyFile(path, filepath.Join(goldenDir, relName)) | ||
| }) | ||
| require.NoError(t, err) | ||
| } | ||
|
|
||
| func copyFile(src, dst string) (errOut error) { | ||
| err := os.MkdirAll(filepath.Dir(dst), 0o777) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| dstFile, err := os.Create(dst) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer func() { | ||
| e := dstFile.Close() | ||
| if errOut == nil { | ||
| errOut = e | ||
| } | ||
| }() | ||
| srcFile, err := os.Open(src) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer func() { | ||
| e := srcFile.Close() | ||
| if errOut == nil { | ||
| errOut = e | ||
| } | ||
| }() | ||
| _, err = io.Copy(dstFile, srcFile) | ||
| return err | ||
| } | ||
|
|
||
| func CheckGoldenDir(t *testing.T, resultDir, goldenDir string) { | ||
| t.Helper() | ||
| golden := true | ||
| t.Cleanup(func() { | ||
| t.Helper() | ||
| if !golden { | ||
| t.Log("To regenerate golden files run `UPDATE_GOLDEN=1 script/test`") | ||
| } | ||
| }) | ||
| updateGoldenDir(t, resultDir, goldenDir) | ||
| checked := map[string]bool{} | ||
| _, err := os.Stat(goldenDir) | ||
| if err == nil { | ||
| assert.NoError(t, filepath.WalkDir(goldenDir, func(wantPath string, info fs.DirEntry, err error) error { | ||
| relPath := mustRel(t, goldenDir, wantPath) | ||
| if err != nil || info.IsDir() { | ||
| return err | ||
| } | ||
| if !assertEqualFiles(t, wantPath, filepath.Join(resultDir, relPath)) { | ||
| golden = false | ||
| } | ||
| checked[relPath] = true | ||
| return nil | ||
| })) | ||
| } | ||
| assert.NoError(t, filepath.Walk(resultDir, func(resultPath string, info fs.FileInfo, err error) error { | ||
| relPath := mustRel(t, resultDir, resultPath) | ||
| if err != nil || info.IsDir() || checked[relPath] { | ||
| return err | ||
| } | ||
| golden = false | ||
| return fmt.Errorf("found unexpected file:\n%s", relPath) | ||
| })) | ||
| } | ||
|
|
||
| func mustRel(t *testing.T, base, target string) string { | ||
| t.Helper() | ||
| rel, err := filepath.Rel(base, target) | ||
| require.NoError(t, err) | ||
| return rel | ||
| } | ||
|
|
||
| func assertEqualFiles(t *testing.T, want, got string) bool { | ||
| t.Helper() | ||
| wantBytes, err := os.ReadFile(want) | ||
| if !assert.NoError(t, err) { | ||
| return false | ||
| } | ||
| wantBytes = bytes.ReplaceAll(wantBytes, []byte("\r\n"), []byte("\n")) | ||
| gotBytes, err := os.ReadFile(got) | ||
| if !assert.NoError(t, err) { | ||
| return false | ||
| } | ||
| gotBytes = bytes.ReplaceAll(gotBytes, []byte("\r\n"), []byte("\n")) | ||
| return assert.Equal(t, string(wantBytes), string(gotBytes)) | ||
| } |
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