(t *testing.T)
| 342 | } |
| 343 | |
| 344 | func TestPanicDoSharedByDoChan(t *testing.T) { |
| 345 | if os.Getenv("TEST_PANIC_DOCHAN") != "" { |
| 346 | blocked := make(chan struct{}) |
| 347 | unblock := make(chan struct{}) |
| 348 | |
| 349 | g := new(Group[string, any]) |
| 350 | go func() { |
| 351 | defer func() { |
| 352 | recover() |
| 353 | }() |
| 354 | g.Do("", func() (any, error) { |
| 355 | close(blocked) |
| 356 | <-unblock |
| 357 | panic("Panicking in Do") |
| 358 | }) |
| 359 | }() |
| 360 | |
| 361 | <-blocked |
| 362 | ch := g.DoChan("", func() (any, error) { |
| 363 | panic("DoChan unexpectedly executed callback") |
| 364 | }) |
| 365 | close(unblock) |
| 366 | <-ch |
| 367 | t.Fatalf("DoChan unexpectedly returned") |
| 368 | } |
| 369 | |
| 370 | t.Parallel() |
| 371 | |
| 372 | cmd := exec.Command(executable(t), "-test.run="+t.Name(), "-test.v") |
| 373 | cmd.Env = append(os.Environ(), "TEST_PANIC_DOCHAN=1") |
| 374 | out := new(bytes.Buffer) |
| 375 | cmd.Stdout = out |
| 376 | cmd.Stderr = out |
| 377 | if err := cmd.Start(); err != nil { |
| 378 | t.Fatal(err) |
| 379 | } |
| 380 | |
| 381 | err := cmd.Wait() |
| 382 | t.Logf("%s:\n%s", strings.Join(cmd.Args, " "), out) |
| 383 | if err == nil { |
| 384 | t.Errorf("Test subprocess passed; want a crash due to panic in Do shared by DoChan") |
| 385 | } |
| 386 | if bytes.Contains(out.Bytes(), []byte("DoChan unexpectedly")) { |
| 387 | t.Errorf("Test subprocess failed with an unexpected failure mode.") |
| 388 | } |
| 389 | if !bytes.Contains(out.Bytes(), []byte("Panicking in Do")) { |
| 390 | t.Errorf("Test subprocess failed, but the crash isn't caused by panicking in Do") |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | func ExampleGroup() { |
| 395 | g := new(Group[string, any]) |
nothing calls this directly
no test coverage detected