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

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Test Info: Warnings

<!DOCTYPE html>
<html>
<head>
<title>Test moz-extension iframe messaging</title>
<meta charset="utf-8">
<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>
"use strict";
add_task(async function test_moz_extension_iframe_messaging() {
await SpecialPowers.pushPrefEnv({
set: [
["extensions.content_web_accessible.enabled", true],
],
});
let extension = ExtensionTestUtils.loadExtension({
manifest: {
content_scripts: [{
js: ["cs.js"],
}],
web_accessible_resources: ["iframe.html"],
permissions: ["tabs"],
},
files: {
"cs.js"() {
let iframe = document.createElement("iframe");
iframe.src = browser.runtime.getURL("iframe.html");
document.body.append(iframe);
},
"iframe.html": `<!doctype html><script src=iframe.js><\/script>`,
async "iframe.js"() {
browser.runtime.onMessage.addListener(async msg => {
browser.test.assertEq(msg, "from-background", "Correct message.");
return "iframe-response";
});
browser.runtime.onConnect.addListener(async port => {
port.postMessage("port-message");
});
await browser.test.assertRejects(
browser.runtime.sendMessage("from-iframe"),
"Could not establish connection. Receiving end does not exist.",
"No onMessage listener in the background."
);
await new Promise(resolve => {
let port = browser.runtime.connect();
port.onDisconnect.addListener(() => {
browser.test.assertEq(
port.error.message,
"Could not establish connection. Receiving end does not exist.",
"No onConnect listener in the background."
);
resolve();
})
});
// TODO: If/when the tabs API is available from extension iframes, test
// that it won't send a message to itself via browser.tabs.sendMessage()
browser.test.assertEq(browser.tabs, undefined, "No tabs API");
browser.test.sendMessage("iframe-done");
},
},
background() {
browser.test.onMessage.addListener(async () => {
await browser.test.assertRejects(
browser.runtime.sendMessage("from-background"),
"Could not establish connection. Receiving end does not exist.",
"No onMessage listener in another extension page."
);
await new Promise(resolve => {
let port = browser.runtime.connect();
port.onDisconnect.addListener(() => {
browser.test.assertEq(
port.error.message,
"Could not establish connection. Receiving end does not exist.",
"No onConnect listener in another extension page."
);
resolve();
})
});
let [tab] = await browser.tabs.query({
});
let res = await browser.tabs.sendMessage(tab.id, "from-background");
browser.test.assertEq(res, "iframe-response", "Correct response.");
let port = browser.tabs.connect(tab.id);
port.onMessage.addListener(msg => {
browser.test.assertEq(msg, "port-message", "Correct port message.");
browser.test.notifyPass("done");
});
})
}
});
await extension.startup();
let win = window.open("file_sample.html");
await extension.awaitMessage("iframe-done");
extension.sendMessage("run-background");
await extension.awaitFinish("done");
win.close();
await extension.unload();
});
</script>
</body>
</html>