1 files changed, 33 insertions, 0 deletions
diff --git a/toolkit/components/webextensions/test/xpcshell/test_ext_alarms_does_not_fire.js b/toolkit/components/webextensions/test/xpcshell/test_ext_alarms_does_not_fire.js
new file mode 100644
index 000000000..11407b108
--- /dev/null
+++ b/toolkit/components/webextensions/test/xpcshell/test_ext_alarms_does_not_fire.js
@@ -0,0 +1,33 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+add_task(function* test_cleared_alarm_does_not_fire() {
+  async function backgroundScript() {
+    let ALARM_NAME = "test_ext_alarms";
+
+    browser.alarms.onAlarm.addListener(alarm => {
+      browser.test.fail("cleared alarm does not fire");
+      browser.test.notifyFail("alarm-cleared");
+    });
+    browser.alarms.create(ALARM_NAME, {when: Date.now() + 1000});
+
+    let wasCleared = await browser.alarms.clear(ALARM_NAME);
+    browser.test.assertTrue(wasCleared, "alarm was cleared");
+
+    await new Promise(resolve => setTimeout(resolve, 2000));
+
+    browser.test.notifyPass("alarm-cleared");
+  }
+
+  let extension = ExtensionTestUtils.loadExtension({
+    background: `(${backgroundScript})()`,
+    manifest: {
+      permissions: ["alarms"],
+    },
+  });
+
+  yield extension.startup();
+  yield extension.awaitFinish("alarm-cleared");
+  yield extension.unload();
+});