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/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2021 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package signaling
import (
"context"
"sync"
"testing"
"time"
)
func TestNotifierNoWaiter(t *testing.T) {
var notifier Notifier
// Notifications can be sent even if no waiter exists.
notifier.Notify("foo")
}
func TestNotifierSimple(t *testing.T) {
var notifier Notifier
var wg sync.WaitGroup
wg.Add(1)
waiter := notifier.NewWaiter("foo")
defer notifier.Release(waiter)
go func() {
defer wg.Done()
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
if err := waiter.Wait(ctx); err != nil {
t.Error(err)
}
}()
notifier.Notify("foo")
wg.Wait()
}
func TestNotifierMultiNotify(t *testing.T) {
var notifier Notifier
waiter := notifier.NewWaiter("foo")
defer notifier.Release(waiter)
notifier.Notify("foo")
// The second notification will be ignored while the first is still pending.
notifier.Notify("foo")
}
func TestNotifierWaitClosed(t *testing.T) {
var notifier Notifier
waiter := notifier.NewWaiter("foo")
notifier.Release(waiter)
if err := waiter.Wait(context.Background()); err != nil {
t.Error(err)
}
}
func TestNotifierWaitClosedMulti(t *testing.T) {
var notifier Notifier
waiter1 := notifier.NewWaiter("foo")
waiter2 := notifier.NewWaiter("foo")
notifier.Release(waiter1)
notifier.Release(waiter2)
if err := waiter1.Wait(context.Background()); err != nil {
t.Error(err)
}
if err := waiter2.Wait(context.Background()); err != nil {
t.Error(err)
}
}
func TestNotifierResetWillNotify(t *testing.T) {
var notifier Notifier
var wg sync.WaitGroup
wg.Add(1)
waiter := notifier.NewWaiter("foo")
defer notifier.Release(waiter)
go func() {
defer wg.Done()
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
if err := waiter.Wait(ctx); err != nil {
t.Error(err)
}
}()
notifier.Reset()
wg.Wait()
}
func TestNotifierDuplicate(t *testing.T) {
var notifier Notifier
var wgStart sync.WaitGroup
var wgEnd sync.WaitGroup
for i := 0; i < 2; i++ {
wgStart.Add(1)
wgEnd.Add(1)
go func() {
defer wgEnd.Done()
waiter := notifier.NewWaiter("foo")
defer notifier.Release(waiter)
// Goroutine has created the waiter and is ready.
wgStart.Done()
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
if err := waiter.Wait(ctx); err != nil {
t.Error(err)
}
}()
}
wgStart.Wait()
time.Sleep(100 * time.Millisecond)
notifier.Notify("foo")
wgEnd.Wait()
}