libgo/go/time/sleep_test.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package time_test
   6
   7 import (
   8         "os"
   9         "syscall"
  10         "testing"
  11         . "time"
  12 )
  13
  14 func TestSleep(t *testing.T) {
  15         const delay = int64(100e6)
  16         go func() {
  17                 Sleep(delay / 2)
  18                 syscall.Kill(os.Getpid(), syscall.SIGCHLD)
  19         }()
  20         start := Nanoseconds()
  21         Sleep(delay)
  22         duration := Nanoseconds() - start
  23         if duration < delay {
  24                 t.Fatalf("Sleep(%d) slept for only %d ns", delay, duration)
  25         }
  26 }
  27
  28 func TestAfter(t *testing.T) {
  29         const delay = int64(100e6)
  30         start := Nanoseconds()
  31         end := <-After(delay)
  32         if duration := Nanoseconds() - start; duration < delay {
  33                 t.Fatalf("After(%d) slept for only %d ns", delay, duration)
  34         }
  35         if min := start + delay; end < min {
  36                 t.Fatalf("After(%d) expect >= %d, got %d", delay, min, end)
  37         }
  38 }