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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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diff --git a/toolkit/modules/tests/browser/browser_PromiseMessage.js b/toolkit/modules/tests/browser/browser_PromiseMessage.js
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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.");
+}