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context: deflake tests under Go 1.6

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The context tests were flaky under Go 1.6 on Windows. Make them
slower, but make up for the slowness by parallelizing them.

These tests don't run on Go 1.7+ in the subrepo. They were deflaked in
the standard library's context in Go 1.7.

Updates golang/go#11811

Change-Id: I8dc8d9e13e72e87b4444e92d2316dd95bd7d066d
Reviewed-on: https://go-review.googlesource.com/34288
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Brad Fitzpatrick
2016-12-13 01:09:39 +00:00
parent b1a2d6e8c8
commit cfae461ced
1 changed files with 23 additions and 17 deletions
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40
context/context_test.go
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@@ -243,45 +243,51 @@ func testDeadline(c Context, wait time.Duration, t *testing.T) {
}
func TestDeadline(t *testing.T) {
c, _ := WithDeadline(Background(), time.Now().Add(100*time.Millisecond))
t.Parallel()
const timeUnit = 500 * time.Millisecond
c, _ := WithDeadline(Background(), time.Now().Add(1*timeUnit))
if got, prefix := fmt.Sprint(c), "context.Background.WithDeadline("; !strings.HasPrefix(got, prefix) {
t.Errorf("c.String() = %q want prefix %q", got, prefix)
}
testDeadline(c, 200*time.Millisecond, t)
testDeadline(c, 2*timeUnit, t)
c, _ = WithDeadline(Background(), time.Now().Add(100*time.Millisecond))
c, _ = WithDeadline(Background(), time.Now().Add(1*timeUnit))
o := otherContext{c}
testDeadline(o, 200*time.Millisecond, t)
testDeadline(o, 2*timeUnit, t)
c, _ = WithDeadline(Background(), time.Now().Add(100*time.Millisecond))
c, _ = WithDeadline(Background(), time.Now().Add(1*timeUnit))
o = otherContext{c}
c, _ = WithDeadline(o, time.Now().Add(300*time.Millisecond))
testDeadline(c, 200*time.Millisecond, t)
c, _ = WithDeadline(o, time.Now().Add(3*timeUnit))
testDeadline(c, 2*timeUnit, t)
}
func TestTimeout(t *testing.T) {
c, _ := WithTimeout(Background(), 100*time.Millisecond)
t.Parallel()
const timeUnit = 500 * time.Millisecond
c, _ := WithTimeout(Background(), 1*timeUnit)
if got, prefix := fmt.Sprint(c), "context.Background.WithDeadline("; !strings.HasPrefix(got, prefix) {
t.Errorf("c.String() = %q want prefix %q", got, prefix)
}
testDeadline(c, 200*time.Millisecond, t)
testDeadline(c, 2*timeUnit, t)
c, _ = WithTimeout(Background(), 100*time.Millisecond)
c, _ = WithTimeout(Background(), 1*timeUnit)
o := otherContext{c}
testDeadline(o, 200*time.Millisecond, t)
testDeadline(o, 2*timeUnit, t)
c, _ = WithTimeout(Background(), 100*time.Millisecond)
c, _ = WithTimeout(Background(), 1*timeUnit)
o = otherContext{c}
c, _ = WithTimeout(o, 300*time.Millisecond)
testDeadline(c, 200*time.Millisecond, t)
c, _ = WithTimeout(o, 3*timeUnit)
testDeadline(c, 2*timeUnit, t)
}
func TestCanceledTimeout(t *testing.T) {
c, _ := WithTimeout(Background(), 200*time.Millisecond)
t.Parallel()
const timeUnit = 500 * time.Millisecond
c, _ := WithTimeout(Background(), 2*timeUnit)
o := otherContext{c}
c, cancel := WithTimeout(o, 400*time.Millisecond)
c, cancel := WithTimeout(o, 4*timeUnit)
cancel()
time.Sleep(100 * time.Millisecond) // let cancelation propagate
time.Sleep(1 * timeUnit) // let cancelation propagate
select {
case <-c.Done():
default: