openmct/platform/features/plot/test/Canvas2DChartSpec.js

96 lines
3.6 KiB
JavaScript

/*****************************************************************************
* Open MCT, Copyright (c) 2014-2016, 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
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*****************************************************************************/
/**
* MergeModelsSpec. Created by vwoeltje on 11/6/14.
*/
define(
["../src/Canvas2DChart"],
function (Canvas2DChart) {
describe("A canvas 2d chart", function () {
var mockCanvas,
mock2d,
chart;
beforeEach(function () {
mockCanvas = jasmine.createSpyObj("canvas", ["getContext"]);
mock2d = jasmine.createSpyObj(
"2d",
[
"clearRect",
"beginPath",
"moveTo",
"lineTo",
"stroke",
"fillRect"
]
);
mockCanvas.getContext.andReturn(mock2d);
chart = new Canvas2DChart(mockCanvas);
});
// Note that tests below are less specific than they
// could be, esp. w.r.t. arguments to drawing calls;
// this is a fallback option so is a lower test priority.
it("allows the canvas to be cleared", function () {
chart.clear();
expect(mock2d.clearRect).toHaveBeenCalled();
});
it("does not construct if 2D is unavailable", function () {
mockCanvas.getContext.andReturn(undefined);
expect(function () {
return new Canvas2DChart(mockCanvas);
}).toThrow();
});
it("allows dimensions to be set", function () {
// No return value, just verify API is present
chart.setDimensions([120, 120], [0, 10]);
});
it("allows lines to be drawn", function () {
var testBuffer = [0, 1, 3, 8],
testColor = [0.25, 0.33, 0.66, 1.0],
testPoints = 2;
chart.drawLine(testBuffer, testColor, testPoints);
expect(mock2d.beginPath).toHaveBeenCalled();
expect(mock2d.lineTo.calls.length).toEqual(1);
expect(mock2d.stroke).toHaveBeenCalled();
});
it("allows squares to be drawn", function () {
var testMin = [0, 1],
testMax = [10, 10],
testColor = [0.25, 0.33, 0.66, 1.0];
chart.drawSquare(testMin, testMax, testColor);
expect(mock2d.fillRect).toHaveBeenCalled();
});
});
}
);