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

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Test Info: Warnings

<!DOCTYPE html>
<html>
<head>
<title>WebExtension test</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";
async function testFn(expectPromise) {
browser.test.assertEq(null, chrome.runtime.lastError, "no lastError before call");
let retval = chrome.runtime.sendMessage("msg");
browser.test.assertEq(null, chrome.runtime.lastError, "no lastError after call");
if (expectPromise) {
browser.test.assertTrue(retval instanceof Promise, "chrome.runtime.sendMessage should return a promise");
} else {
browser.test.assertEq(undefined, retval, "return value of chrome.runtime.sendMessage with callback");
}
let isAsyncCall = false;
retval = chrome.runtime.sendMessage("msg", reply => {
browser.test.assertEq(undefined, reply, "no reply");
browser.test.assertTrue(isAsyncCall, "chrome.runtime.sendMessage's callback must be called asynchronously");
browser.test.assertEq(undefined, retval, "return value of chrome.runtime.sendMessage with callback");
browser.test.assertEq("Could not establish connection. Receiving end does not exist.", chrome.runtime.lastError.message);
browser.test.sendMessage("finished", retval);
});
isAsyncCall = true;
}
add_task(async function test_content_script_sendMessage_without_listener() {
async function contentScript() {
await browser.test.assertRejects(
browser.runtime.sendMessage("msg"),
"Could not establish connection. Receiving end does not exist.");
browser.test.notifyPass("sendMessage callback was invoked");
}
let extension = ExtensionTestUtils.loadExtension({
manifest: {
content_scripts: [{
js: ["contentscript.js"],
}],
},
files: {
"contentscript.js": contentScript,
},
});
await extension.startup();
let win = window.open("file_sample.html");
await extension.awaitFinish("sendMessage callback was invoked");
win.close();
await extension.unload();
});
add_task(async function test_content_script_chrome_sendMessage_without_listener() {
let extension = ExtensionTestUtils.loadExtension({
manifest: {
manifest_version: 2,
content_scripts: [{
js: ["contentscript.js"],
}],
},
// In MV2, chrome namespace in content scripts do get promises, however in background pages they do not.
background: `(${testFn})(false)`,
files: {
"contentscript.js": `(${testFn})(true)`,
},
});
await extension.startup();
await extension.awaitMessage("finished");
let win = window.open("file_sample.html");
await extension.awaitMessage("finished");
win.close();
await extension.unload();
});
add_task(async function test_chrome_sendMessage_without_listener_v3() {
await SpecialPowers.pushPrefEnv({
set: [["extensions.manifestV3.enabled", true]],
});
// We only test the background here because content script behavior
// is independant of the manifest version.
let extension = ExtensionTestUtils.loadExtension({
manifest: {
manifest_version: 3,
},
background: `(${testFn})(true)`,
});
await extension.startup();
await extension.awaitMessage("finished");
await extension.unload();
await SpecialPowers.popPrefEnv();
});
</script>
</body>
</html>