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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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38
toolkit/modules/tests/browser/browser_PromiseMessage.js Normal file
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* global Cu, BrowserTestUtils, is, ok, add_task, gBrowser */
"use strict";
Cu.import("resource://gre/modules/PromiseMessage.jsm", this);
const url = "http://example.org/tests/dom/manifest/test/resource.sjs";
/**
* Test basic API error conditions
*/
add_task(function* () {
yield BrowserTestUtils.withNewTab({gBrowser, url}, testPromiseMessageAPI)
});
function* testPromiseMessageAPI(aBrowser) {
// Reusing an existing message.
const msgKey = "DOM:WebManifest:hasManifestLink";
const mm = aBrowser.messageManager;
const id = "this should not change";
const foo = "neitherShouldThis";
const data = {id, foo};
// This just returns false, and it doesn't matter for this test.
yield PromiseMessage.send(mm, msgKey, data);
// Check that no new props were added
const props = Object.getOwnPropertyNames(data);
ok(props.length === 2, "There should only be 2 props");
ok(props.includes("id"), "Has the id property");
ok(props.includes("foo"), "Has the foo property");
// Check that the props didn't change.
is(data.id, id, "The id prop must not change.");
is(data.foo, foo, "The foo prop must not change.");
}