From 2db76a64f935cc7f3fce41e460e50780f174e309 Mon Sep 17 00:00:00 2001
From: Curtis Robert <crobert@splunk.com>
Date: Thu, 25 Jan 2024 04:18:12 -0800
Subject: [PATCH] [chore][exporter/alertmanagerexporter] Enable goleak check
 (#30710)

**Description:** <Describe what has changed.>
<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
Enables goleak check on tests in the `alertmanager` exporter to ensure
it's not leaking goroutines. This is a test only change.

**Link to tracking Issue:** <Issue number if applicable>
#30438

**Testing:** <Describe what testing was performed and which tests were
added.>
All tests are passing, goleak check is passing.
---
 .../alertmanager_exporter_test.go               |  1 +
 exporter/alertmanagerexporter/go.mod            |  1 +
 exporter/alertmanagerexporter/go.sum            |  1 +
 exporter/alertmanagerexporter/package_test.go   | 17 +++++++++++++++++
 4 files changed, 20 insertions(+)
 create mode 100644 exporter/alertmanagerexporter/package_test.go

diff --git a/exporter/alertmanagerexporter/alertmanager_exporter_test.go b/exporter/alertmanagerexporter/alertmanager_exporter_test.go
index e30b9d02f98e..73170e0ef526 100644
--- a/exporter/alertmanagerexporter/alertmanager_exporter_test.go
+++ b/exporter/alertmanagerexporter/alertmanager_exporter_test.go
@@ -308,6 +308,7 @@ func newMockServer(t *testing.T) *MockServer {
 
 func TestAlertManagerPostAlert(t *testing.T) {
 	mock := newMockServer(t)
+	defer func() { mock.mockserver.Close() }()
 	factory := NewFactory()
 	cfg := factory.CreateDefaultConfig().(*Config)
 
diff --git a/exporter/alertmanagerexporter/go.mod b/exporter/alertmanagerexporter/go.mod
index f2044bfd93e5..c2d5ed7ee410 100644
--- a/exporter/alertmanagerexporter/go.mod
+++ b/exporter/alertmanagerexporter/go.mod
@@ -20,6 +20,7 @@ require (
 	go.opentelemetry.io/collector/semconv v0.93.1-0.20240124123350-9047c0e373f9
 	go.opentelemetry.io/otel/metric v1.22.0
 	go.opentelemetry.io/otel/trace v1.22.0
+	go.uber.org/goleak v1.3.0
 	go.uber.org/zap v1.26.0
 )
 
diff --git a/exporter/alertmanagerexporter/go.sum b/exporter/alertmanagerexporter/go.sum
index d1ffb8410a39..407f1ccbb69a 100644
--- a/exporter/alertmanagerexporter/go.sum
+++ b/exporter/alertmanagerexporter/go.sum
@@ -325,6 +325,7 @@ go.opentelemetry.io/otel/sdk/metric v1.22.0/go.mod h1:KjQGeMIDlBNEOo6HvjhxIec1p/
 go.opentelemetry.io/otel/trace v1.22.0 h1:Hg6pPujv0XG9QaVbGOBVHunyuLcCC3jN7WEhPx83XD0=
 go.opentelemetry.io/otel/trace v1.22.0/go.mod h1:RbbHXVqKES9QhzZq/fE5UnOSILqRt40a21sPw2He1xo=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
 go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 go.uber.org/zap v1.26.0 h1:sI7k6L95XOKS281NhVKOFCUNIvv9e0w4BF8N3u+tCRo=
diff --git a/exporter/alertmanagerexporter/package_test.go b/exporter/alertmanagerexporter/package_test.go
new file mode 100644
index 000000000000..2bd557e6f50e
--- /dev/null
+++ b/exporter/alertmanagerexporter/package_test.go
@@ -0,0 +1,17 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package alertmanagerexporter
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+// The IgnoreTopFunction call prevents catching the leak generated by opencensus
+// defaultWorker.Start which at this time is part of the package's init call.
+// See https://github.com/census-instrumentation/opencensus-go/issues/1191 for more information.
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m, goleak.IgnoreTopFunction("go.opencensus.io/stats/view.(*worker).start"))
+}