mirror of
https://github.com/strukturag/nextcloud-spreed-signaling.git
synced 2023-10-21 07:33:40 -05:00
Joachim Bauch
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
2.0 KiB
Go
75 lines
2.0 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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