openmct/platform/features/timeline/test/chart/Canvas2DChartSpec.js
Pete Richards 49560698f6 [Reorg] Make timeline-specific chart directive
Make a separate chart directive for drawing resource graphs in timelines.  This
is in preparation for a new plot bundle which will make a large number of
changes to the drawing API to support newly requested features.  By separating
code, there will be no impact to the timeline when the new plot features are
added.
2017-01-17 09:59:00 -08:00

96 lines
3.6 KiB
JavaScript

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/**
* MergeModelsSpec. Created by vwoeltje on 11/6/14.
*/
define(
["../../src/chart/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();
});
});
}
);