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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /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.go | 45 |
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 --- /dev/null +++ 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() + } +} |