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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libgo/go/time/tick_test.go
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Diffstat (limited to 'libgo/go/time/tick_test.go')
-rw-r--r--libgo/go/time/tick_test.go45
1 files changed, 45 insertions, 0 deletions
diff --git a/libgo/go/time/tick_test.go b/libgo/go/time/tick_test.go
new file mode 100644
index 000000000..2a63a0f2b
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+++ b/libgo/go/time/tick_test.go
@@ -0,0 +1,45 @@
+// 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 (
+ Delta = 100 * 1e6
+ Count = 10
+ )
+ ticker := NewTicker(Delta)
+ t0 := Nanoseconds()
+ for i := 0; i < Count; i++ {
+ <-ticker.C
+ }
+ ticker.Stop()
+ t1 := Nanoseconds()
+ ns := t1 - t0
+ target := int64(Delta * Count)
+ slop := target * 2 / 10
+ if ns < target-slop || ns > target+slop {
+ t.Fatalf("%d ticks of %g ns took %g ns, expected %g", Count, float64(Delta), float64(ns), float64(target))
+ }
+ // Now test that the ticker stopped
+ Sleep(2 * Delta)
+ _, received := <-ticker.C
+ if received {
+ t.Fatal("Ticker did not shut down")
+ }
+}
+
+// Test that a bug tearing down a ticker has been fixed. This routine should not deadlock.
+func TestTeardown(t *testing.T) {
+ for i := 0; i < 3; i++ {
+ ticker := NewTicker(1e8)
+ <-ticker.C
+ ticker.Stop()
+ }
+}