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<!DOCTYPE HTML>
<html>
<head>
<title>Test for content script</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/SpawnTask.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/ExtensionTestUtils.js"></script>
<script type="text/javascript" src="head.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<script type="text/javascript">
"use strict";
add_task(function* test_listener_proxies() {
let extension = ExtensionTestUtils.loadExtension({
useAddonManager: "temporary",
manifest: {
"permissions": ["storage"],
},
async background() {
// Test that adding multiple listeners for the same event works as
// expected.
let awaitChanged = () => new Promise(resolve => {
browser.storage.onChanged.addListener(function listener() {
browser.storage.onChanged.removeListener(listener);
resolve();
});
});
let promises = [
awaitChanged(),
awaitChanged(),
];
function removedListener() {}
browser.storage.onChanged.addListener(removedListener);
browser.storage.onChanged.removeListener(removedListener);
promises.push(awaitChanged(), awaitChanged());
browser.storage.local.set({foo: "bar"});
await Promise.all(promises);
browser.test.notifyPass("onchanged-listeners");
},
});
yield extension.startup();
yield extension.awaitFinish("onchanged-listeners");
yield extension.unload();
});
</script>
</body>
</html>
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