mirror of
https://github.com/strukturag/nextcloud-spreed-signaling
synced 2024-05-03 14:23:10 +02:00
0020076f2b
This makes sure the test has been completely teared down before the goroutines are counted and thus should prevent flaky failed tests.
75 lines
2 KiB
Go
75 lines
2 KiB
Go
/**
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* Standalone signaling server for the Nextcloud Spreed app.
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* Copyright (C) 2021 struktur AG
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*
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* @author Joachim Bauch <bauch@struktur.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package signaling
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import (
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"os"
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"os/signal"
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"runtime/pprof"
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"sync"
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"testing"
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"time"
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)
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var listenSignalOnce sync.Once
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func ensureNoGoroutinesLeak(t *testing.T, f func(t *testing.T)) {
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t.Helper()
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// The signal package will start a goroutine the first time "signal.Notify"
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// is called. Do so outside the function under test so the signal goroutine
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// will not be shown as "leaking".
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listenSignalOnce.Do(func() {
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ch := make(chan os.Signal, 1)
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signal.Notify(ch, os.Interrupt)
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go func() {
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for {
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<-ch
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}
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}()
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})
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profile := pprof.Lookup("goroutine")
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// Give time for things to settle before capturing the number of
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// go routines
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time.Sleep(500 * time.Millisecond)
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before := profile.Count()
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t.Run("leakcheck", f)
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var after int
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// Give time for things to settle before capturing the number of
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// go routines
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timeout := time.Now().Add(time.Second)
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for time.Now().Before(timeout) {
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after = profile.Count()
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if after == before {
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break
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}
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}
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if after != before {
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profile.WriteTo(os.Stderr, 2) // nolint
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t.Fatalf("Number of Go routines has changed from %d to %d", before, after)
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}
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}
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