mozilla-central/toolkit/components/extensions/test/mochitest/test_ext_sendmessage_doublereply.html

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Test Info: Warnings

<!DOCTYPE HTML>
<html>
<head>
<title>WebExtension test</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script 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";
function background() {
// Add two listeners that both send replies. We're supposed to ignore all but one
// of them. Which one is chosen is non-deterministic.
browser.runtime.onMessage.addListener((msg, sender, sendReply) => {
browser.test.assertTrue(sender.tab.url.endsWith("file_sample.html"), "sender url correct");
if (msg == "getreply") {
sendReply("reply1");
}
});
browser.runtime.onMessage.addListener((msg, sender, sendReply) => {
browser.test.assertTrue(sender.tab.url.endsWith("file_sample.html"), "sender url correct");
if (msg == "getreply") {
sendReply("reply2");
}
});
function sleep(callback, n = 10) {
if (n == 0) {
callback();
} else {
setTimeout(function() { sleep(callback, n - 1); }, 0);
}
}
let done_count = 0;
browser.runtime.onMessage.addListener((msg, sender) => {
browser.test.assertTrue(sender.tab.url.endsWith("file_sample.html"), "sender url correct");
if (msg == "done") {
done_count++;
browser.test.assertEq(done_count, 1, "got exactly one reply");
// Go through the event loop a few times to make sure we don't get multiple replies.
sleep(function() {
browser.test.notifyPass("sendmessage_doublereply");
});
}
});
}
function contentScript() {
browser.runtime.sendMessage("getreply", function(resp) {
if (resp != "reply1" && resp != "reply2") {
return; // test failed
}
browser.runtime.sendMessage("done");
});
}
let extensionData = {
background,
manifest: {
"permissions": ["tabs"],
"content_scripts": [{
"js": ["content_script.js"],
"run_at": "document_start",
}],
},
files: {
"content_script.js": contentScript,
},
};
add_task(async function test_contentscript() {
let extension = ExtensionTestUtils.loadExtension(extensionData);
await extension.startup();
let win = window.open("file_sample.html");
await Promise.all([waitForLoad(win), extension.awaitFinish("sendmessage_doublereply")]);
win.close();
await extension.unload();
info("extension unloaded");
});
</script>
</body>
</html>