Function TestTrackTimers

internal/leakcheck/leakcheck_test.go:97–134

TestTrackTimers verifies that only leaked timers are reported and expired, stopped timers are ignored.

(t *testing.T)

// TestTrackTimers verifies that only leaked timers are reported and expired,
// stopped timers are ignored.
func TestTrackTimers(t *testing.T) {
	TrackTimers()
	const leakCount = 3
	for i := 0; i < leakCount; i++ {
		internal.TimeAfterFunc(2*time.Second, func() {
			t.Logf("Timer %d fired.", i)
		})
	}
	wg := sync.WaitGroup{}
	// Let a couple of timers expire.
	for i := 0; i < 2; i++ {
		wg.Add(1)
		internal.TimeAfterFunc(time.Millisecond, func() {
			wg.Done()
		})
	}
	wg.Wait()

	// Stop a couple of timers.
	for i := 0; i < leakCount; i++ {
		t := internal.TimeAfterFunc(time.Hour, func() {
			t.Error("Timer fired before test ended.")
		})
		t.Stop()
	}

	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
	defer cancel()
	e := &testLogger{}
	CheckTimers(ctx, e)
	if e.errorCount != leakCount {
		t.Errorf("CheckTimers found %v leaks, want %v leaks", e.errorCount, leakCount)
		t.Logf("leaked timers:\n%v", strings.Join(e.errors, "\n"))
	}
	ctx, cancel = context.WithTimeout(context.Background(), 3*time.Second)
	defer cancel()
	CheckTimers(ctx, t)
}

func TestLeakChecker_DetectsLeak(t *testing.T) {
	TrackAsyncReporters()