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// Copyright 2015 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package wait
import (
"fmt"
"testing"
"time"
)
func TestWait(t *testing.T) {
const eid = 1
wt := New()
ch := wt.Register(eid)
wt.Trigger(eid, "foo")
v := <-ch
if g, w := fmt.Sprintf("%v (%T)", v, v), "foo (string)"; g != w {
t.Errorf("<-ch = %v, want %v", g, w)
}
if g := <-ch; g != nil {
t.Errorf("unexpected non-nil value: %v (%T)", g, g)
}
}
func TestRegisterDupPanic(t *testing.T) {
const eid = 1
wt := New()
ch1 := wt.Register(eid)
panicC := make(chan struct{}, 1)
func() {
defer func() {
if r := recover(); r != nil {
panicC <- struct{}{}
}
}()
wt.Register(eid)
}()
select {
case <-panicC:
case <-time.After(1 * time.Second):
t.Errorf("failed to receive panic")
}
wt.Trigger(eid, "foo")
<-ch1
}
func TestTriggerDupSuppression(t *testing.T) {
const eid = 1
wt := New()
ch := wt.Register(eid)
wt.Trigger(eid, "foo")
wt.Trigger(eid, "bar")
v := <-ch
if g, w := fmt.Sprintf("%v (%T)", v, v), "foo (string)"; g != w {
t.Errorf("<-ch = %v, want %v", g, w)
}
if g := <-ch; g != nil {
t.Errorf("unexpected non-nil value: %v (%T)", g, g)
}
}
func TestIsRegistered(t *testing.T) {
wt := New()
wt.Register(0)
wt.Register(1)
wt.Register(2)
for i := uint64(0); i < 3; i++ {
if !wt.IsRegistered(i) {
t.Errorf("event ID %d isn't registered", i)
}
}
if wt.IsRegistered(4) {
t.Errorf("event ID 4 shouldn't be registered")
}
wt.Trigger(0, "foo")
if wt.IsRegistered(0) {
t.Errorf("event ID 0 is already triggered, shouldn't be registered")
}
}
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