openmct/platform/commonUI/edit/test/directives/MCTBeforeUnloadSpec.js

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/*****************************************************************************
* Open MCT Web, Copyright (c) 2014-2015, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT Web is licensed under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* Open MCT Web includes source code licensed under additional open source
* licenses. See the Open Source Licenses file (LICENSES.md) included with
* this source code distribution or the Licensing information page available
* at runtime from the About dialog for additional information.
*****************************************************************************/
define(
["../../src/directives/MCTBeforeUnload"],
function (MCTBeforeUnload) {
describe("The mct-before-unload directive", function () {
var mockWindow,
mockScope,
testAttrs,
mockEvent,
directive;
function fireListener(eventType, value) {
mockScope.$on.calls.forEach(function (call) {
if (call.args[0] === eventType) {
call.args[1](value);
}
});
}
beforeEach(function () {
mockWindow = jasmine.createSpyObj("$window", ['confirm']);
mockScope = jasmine.createSpyObj("$scope", ['$eval', '$on']);
testAttrs = { mctBeforeUnload: "someExpression" };
mockEvent = jasmine.createSpyObj("event", ["preventDefault"]);
directive = new MCTBeforeUnload(mockWindow);
directive.link(mockScope, {}, testAttrs);
});
it("can be used only as an attribute", function () {
expect(directive.restrict).toEqual('A');
});
it("listens for beforeunload", function () {
expect(mockWindow.onbeforeunload).toEqual(jasmine.any(Function));
});
it("listens for route changes", function () {
expect(mockScope.$on).toHaveBeenCalledWith(
"$locationChangeStart",
jasmine.any(Function)
);
});
it("listens for its scope's destroy event", function () {
expect(mockScope.$on).toHaveBeenCalledWith(
"$destroy",
jasmine.any(Function)
);
});
it("uses result of evaluated expression as a warning", function () {
mockScope.$eval.andReturn(undefined);
expect(mockWindow.onbeforeunload(mockEvent)).toBeUndefined();
mockScope.$eval.andReturn("some message");
expect(mockWindow.onbeforeunload(mockEvent)).toEqual("some message");
// Verify that the right expression was evaluated
expect(mockScope.$eval).toHaveBeenCalledWith(testAttrs.mctBeforeUnload);
});
it("confirms route changes", function () {
// First, try with no unsaved changes;
// should not confirm or preventDefault
mockScope.$eval.andReturn(undefined);
fireListener("$locationChangeStart", mockEvent);
expect(mockWindow.confirm).not.toHaveBeenCalled();
expect(mockEvent.preventDefault).not.toHaveBeenCalled();
// Next, try with unsaved changes that the user confirms;
// should prompt, but not preventDefault
mockScope.$eval.andReturn("some message");
mockWindow.confirm.andReturn(true);
fireListener("$locationChangeStart", mockEvent);
expect(mockWindow.confirm).toHaveBeenCalledWith("some message");
expect(mockEvent.preventDefault).not.toHaveBeenCalled();
// Finally, act as if the user said no to this dialog;
// this should preventDefault on the location change.
mockWindow.confirm.andReturn(false);
fireListener("$locationChangeStart", mockEvent);
expect(mockWindow.confirm).toHaveBeenCalledWith("some message");
expect(mockEvent.preventDefault).toHaveBeenCalled();
});
it("cleans up listeners when destroyed", function () {
fireListener("$destroy", mockEvent);
expect(mockWindow.onbeforeunload).toBeUndefined();
});
});
}
);