Move Goroutines helpers to test package.

test/goroutines_test.go

@@ -0,0 +1,60 @@
+/**
+ * Standalone signaling server for the Nextcloud Spreed app.
+ * Copyright (C) 2025 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 test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNoGoroutineLeak(t *testing.T) { // nolint:paralleltest
+	EnsureNoGoroutinesLeak(t, func(t *testing.T) {
+		stop := make(chan struct{})
+		stopped := make(chan struct{})
+
+		go func() {
+			defer close(stopped)
+			<-stop
+		}()
+
+		close(stop)
+		<-stopped
+	})
+}
+
+func TestLeakGoroutine(t *testing.T) { // nolint:paralleltest
+	stop := make(chan struct{})
+	stopped := make(chan struct{})
+
+	before, after := ensureNoGoroutinesLeak(t, func(t *testing.T) {
+		go func() {
+			defer close(stopped)
+			<-stop
+		}()
+
+	}, true)
+	close(stop)
+	<-stopped
+
+	assert.Equal(t, 1, after-before, "wrong number of leaked goroutines")
+}