openmct/platform/features/timeline/test/controllers/TimelineTickControllerSpec.js

87 lines
3.4 KiB
JavaScript

/*****************************************************************************
* Open MCT, Copyright (c) 2009-2016, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT 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 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/controllers/TimelineTickController', '../../src/TimelineFormatter'],
function (TimelineTickController, TimelineFormatter) {
var BILLION = 1000000000,
FORMATTER = new TimelineFormatter();
describe("The timeline tick controller", function () {
var mockToMillis,
controller;
function expectedTick(pixelValue) {
return {
left: pixelValue,
text: FORMATTER.format(pixelValue * 2 + BILLION)
};
}
beforeEach(function () {
mockToMillis = jasmine.createSpy('toMillis');
mockToMillis.andCallFake(function (v) {
return v * 2 + BILLION;
});
controller = new TimelineTickController();
});
it("exposes tick marks within a requested pixel span", function () {
// Simple case
expect(controller.labels(8000, 300, 100, mockToMillis))
.toEqual([8000, 8100, 8200, 8300].map(expectedTick));
// Slightly more complicated case
expect(controller.labels(7480, 4500, 1000, mockToMillis))
.toEqual([7000, 8000, 9000, 10000, 11000, 12000].map(expectedTick));
});
it("does not rebuild arrays for same inputs", function () {
var firstValue = controller.labels(800, 300, 100, mockToMillis);
expect(controller.labels(800, 300, 100, mockToMillis))
.toEqual(firstValue);
expect(controller.labels(800, 300, 100, mockToMillis))
.toBe(firstValue);
});
it("does rebuild arrays when zoom changes", function () {
var firstValue = controller.labels(800, 300, 100, mockToMillis);
mockToMillis.andCallFake(function (v) {
return BILLION * 2 + v;
});
expect(controller.labels(800, 300, 100, mockToMillis))
.not.toEqual(firstValue);
expect(controller.labels(800, 300, 100, mockToMillis))
.not.toBe(firstValue);
});
});
}
);