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replication: stepqueue: make TestPqNotconcurrent less flaky

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This commit is contained in:
Christian Schwarz 2019-03-19 18:50:12 +01:00
parent 2ba1ff15b7
commit 86fdcfc437
1 changed files with 17 additions and 6 deletions
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23
replication/driver/replication_stepqueue_test.go
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@ -13,18 +13,26 @@ import (
"github.com/stretchr/testify/assert"
)
// FIXME: this test relies on timing and is thus rather flaky
// (relies on scheduler responsivity of < 500ms)
func TestPqNotconcurrent(t *testing.T) {
var ctr uint32
q := newStepQueue()
var wg sync.WaitGroup
wg.Add(3)
wg.Add(4)
go func() {
defer wg.Done()
defer q.WaitReady("1", time.Unix(1, 0))()
defer q.WaitReady("1", time.Unix(9999, 0))()
ret := atomic.AddUint32(&ctr, 1)
assert.Equal(t, uint32(1), ret)
time.Sleep(1 * time.Second)
}()
// give goroutine "1" 500ms to enter queue, get the active slot and enter time.Sleep
defer q.Start(1)()
time.Sleep(500 * time.Millisecond)
// while "1" is still running, queue in "2", "3" and "4"
go func() {
defer wg.Done()
defer q.WaitReady("2", time.Unix(2, 0))()
@ -37,11 +45,14 @@ func TestPqNotconcurrent(t *testing.T) {
ret := atomic.AddUint32(&ctr, 1)
assert.Equal(t, uint32(3), ret)
}()
go func() {
defer wg.Done()
defer q.WaitReady("4", time.Unix(4, 0))()
ret := atomic.AddUint32(&ctr, 1)
assert.Equal(t, uint32(4), ret)
}()
time.Sleep(1 * time.Second)
defer q.Start(1)()
wg.Wait()
}
type record struct {