diff options
Diffstat (limited to 'src/time/sleep_test.go')
-rw-r--r-- | src/time/sleep_test.go | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/time/sleep_test.go b/src/time/sleep_test.go index 6ee0631a855..e0172bf5e0b 100644 --- a/src/time/sleep_test.go +++ b/src/time/sleep_test.go @@ -527,6 +527,40 @@ func TestZeroTimer(t *testing.T) { } } +// Test that rapidly moving a timer earlier doesn't cause it to get dropped. +// Issue 47329. +func TestTimerModifiedEarlier(t *testing.T) { + past := Until(Unix(0, 0)) + count := 1000 + fail := 0 + for i := 0; i < count; i++ { + timer := NewTimer(Hour) + for j := 0; j < 10; j++ { + if !timer.Stop() { + <-timer.C + } + timer.Reset(past) + } + + deadline := NewTimer(10 * Second) + defer deadline.Stop() + now := Now() + select { + case <-timer.C: + if since := Since(now); since > 8*Second { + t.Errorf("timer took too long (%v)", since) + fail++ + } + case <-deadline.C: + t.Error("deadline expired") + } + } + + if fail > 0 { + t.Errorf("%d failures", fail) + } +} + // Benchmark timer latency when the thread that creates the timer is busy with // other work and the timers must be serviced by other threads. // https://golang.org/issue/38860 |