| 41 | } |
| 42 | |
| 43 | func TestFatal(t *testing.T) { |
| 44 | if os.Getenv("TEST_FATAL") == "1" { |
| 45 | w := diode.NewWriter(os.Stderr, 1000, 0, func(missed int) { |
| 46 | fmt.Printf("Dropped %d messages\n", missed) |
| 47 | }) |
| 48 | defer w.Close() |
| 49 | log := zerolog.New(w) |
| 50 | log.Fatal().Msg("test") |
| 51 | return |
| 52 | } |
| 53 | |
| 54 | cmd := exec.Command(os.Args[0], "-test.run=TestFatal") |
| 55 | cmd.Env = append(os.Environ(), "TEST_FATAL=1") |
| 56 | stderr, err := cmd.StderrPipe() |
| 57 | if err != nil { |
| 58 | t.Fatal(err) |
| 59 | } |
| 60 | err = cmd.Start() |
| 61 | if err != nil { |
| 62 | t.Fatal(err) |
| 63 | } |
| 64 | |
| 65 | var stderrBuf bytes.Buffer |
| 66 | var wg sync.WaitGroup |
| 67 | wg.Add(1) |
| 68 | go func() { |
| 69 | defer wg.Done() |
| 70 | if _, err := io.Copy(&stderrBuf, stderr); err != nil { |
| 71 | t.Errorf("failed to copy stderr: %v", err) |
| 72 | } |
| 73 | }() |
| 74 | |
| 75 | err = cmd.Wait() |
| 76 | if err == nil { |
| 77 | t.Error("Expected log.Fatal to exit with non-zero status") |
| 78 | } |
| 79 | |
| 80 | wg.Wait() // Wait for the goroutine to finish copying |
| 81 | slurp := stderrBuf.Bytes() |
| 82 | |
| 83 | want := "{\"level\":\"fatal\",\"message\":\"test\"}\n" |
| 84 | got := cbor.DecodeIfBinaryToString(slurp) |
| 85 | if got != want { |
| 86 | t.Errorf("Diode Fatal Test failed. got:%s, want:%s!", got, want) |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | type SlowWriter struct{} |
| 91 | |