gcc/libgo/go/time/tick_test.go
Ian Lance Taylor 1a2f01efa6 libgo: update to Go1.10beta1
Update the Go library to the 1.10beta1 release.
    
    Requires a few changes to the compiler for modifications to the map
    runtime code, and to handle some nowritebarrier cases in the runtime.
    
    Reviewed-on: https://go-review.googlesource.com/86455

gotools/:
	* Makefile.am (go_cmd_vet_files): New variable.
	(go_cmd_buildid_files, go_cmd_test2json_files): New variables.
	(s-zdefaultcc): Change from constants to functions.
	(noinst_PROGRAMS): Add vet, buildid, and test2json.
	(cgo$(EXEEXT)): Link against $(LIBGOTOOL).
	(vet$(EXEEXT)): New target.
	(buildid$(EXEEXT)): New target.
	(test2json$(EXEEXT)): New target.
	(install-exec-local): Install all $(noinst_PROGRAMS).
	(uninstall-local): Uninstasll all $(noinst_PROGRAMS).
	(check-go-tool): Depend on $(noinst_PROGRAMS).  Copy down
	objabi.go.
	(check-runtime): Depend on $(noinst_PROGRAMS).
	(check-cgo-test, check-carchive-test): Likewise.
	(check-vet): New target.
	(check): Depend on check-vet.  Look at cmd_vet-testlog.
	(.PHONY): Add check-vet.
	* Makefile.in: Rebuild.

From-SVN: r256365
2018-01-09 01:23:08 +00:00

85 lines
1.8 KiB
Go

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package time_test
import (
"testing"
. "time"
)
func TestTicker(t *testing.T) {
const Count = 10
Delta := 100 * Millisecond
ticker := NewTicker(Delta)
t0 := Now()
for i := 0; i < Count; i++ {
<-ticker.C
}
ticker.Stop()
t1 := Now()
dt := t1.Sub(t0)
target := Delta * Count
slop := target * 2 / 10
if dt < target-slop || (!testing.Short() && dt > target+slop) {
t.Fatalf("%d %s ticks took %s, expected [%s,%s]", Count, Delta, dt, target-slop, target+slop)
}
// Now test that the ticker stopped
Sleep(2 * Delta)
select {
case <-ticker.C:
t.Fatal("Ticker did not shut down")
default:
// ok
}
}
// Issue 21874
func TestTickerStopWithDirectInitialization(t *testing.T) {
c := make(chan Time)
tk := &Ticker{C: c}
tk.Stop()
}
// Test that a bug tearing down a ticker has been fixed. This routine should not deadlock.
func TestTeardown(t *testing.T) {
Delta := 100 * Millisecond
if testing.Short() {
Delta = 20 * Millisecond
}
for i := 0; i < 3; i++ {
ticker := NewTicker(Delta)
<-ticker.C
ticker.Stop()
}
}
// Test the Tick convenience wrapper.
func TestTick(t *testing.T) {
// Test that giving a negative duration returns nil.
if got := Tick(-1); got != nil {
t.Errorf("Tick(-1) = %v; want nil", got)
}
}
// Test that NewTicker panics when given a duration less than zero.
func TestNewTickerLtZeroDuration(t *testing.T) {
defer func() {
if err := recover(); err == nil {
t.Errorf("NewTicker(-1) should have panicked")
}
}()
NewTicker(-1)
}
func BenchmarkTicker(b *testing.B) {
benchmark(b, func(n int) {
ticker := NewTicker(Nanosecond)
for i := 0; i < n; i++ {
<-ticker.C
}
ticker.Stop()
})
}