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111 lines
4.0 KiB
JavaScript
111 lines
4.0 KiB
JavaScript
/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/
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/**
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* MergeModelsSpec. Created by vwoeltje on 11/6/14.
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*/
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define(
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["../src/GLChart"],
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function (GLChart) {
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"use strict";
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describe("A WebGL chart", function () {
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var mockCanvas,
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mockGL,
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glChart;
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beforeEach(function () {
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mockCanvas = jasmine.createSpyObj("canvas", [ "getContext" ]);
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mockGL = jasmine.createSpyObj(
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"gl",
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[
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"createShader",
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"compileShader",
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"shaderSource",
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"attachShader",
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"createProgram",
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"linkProgram",
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"useProgram",
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"enableVertexAttribArray",
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"getAttribLocation",
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"getUniformLocation",
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"createBuffer",
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"lineWidth",
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"enable",
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"blendFunc",
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"viewport",
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"clear",
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"uniform2fv",
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"uniform4fv",
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"bufferData",
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"bindBuffer",
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"vertexAttribPointer",
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"drawArrays"
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]
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);
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mockGL.ARRAY_BUFFER = "ARRAY_BUFFER";
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mockGL.DYNAMIC_DRAW = "DYNAMIC_DRAW";
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mockGL.TRIANGLE_FAN = "TRIANGLE_FAN";
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mockGL.LINE_STRIP = "LINE_STRIP";
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// Echo back names for uniform locations, so we can
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// test which of these are set for certain operations.
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mockGL.getUniformLocation.andCallFake(function (a, name) {
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return name;
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});
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mockCanvas.getContext.andReturn(mockGL);
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glChart = new GLChart(mockCanvas);
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});
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it("allows the canvas to be cleared", function () {
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glChart.clear();
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expect(mockGL.clear).toHaveBeenCalled();
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});
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it("doees not construct if WebGL is unavailable", function () {
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mockCanvas.getContext.andReturn(undefined);
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expect(function () {
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return new GLChart(mockCanvas);
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}).toThrow();
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});
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it("allows dimensions to be set", function () {
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glChart.setDimensions([120, 120], [0, 10]);
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expect(mockGL.uniform2fv)
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.toHaveBeenCalledWith("uDimensions", [120, 120]);
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expect(mockGL.uniform2fv)
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.toHaveBeenCalledWith("uOrigin", [0, 10]);
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});
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it("allows lines to be drawn", function () {
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var testBuffer = [ 0, 1, 3, 8 ],
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testColor = [ 0.25, 0.33, 0.66, 1.0 ],
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testPoints = 2;
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glChart.drawLine(testBuffer, testColor, testPoints);
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expect(mockGL.bufferData).toHaveBeenCalledWith(
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mockGL.ARRAY_BUFFER,
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testBuffer,
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mockGL.DYNAMIC_DRAW
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);
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expect(mockGL.uniform4fv)
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.toHaveBeenCalledWith("uColor", testColor);
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expect(mockGL.drawArrays)
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.toHaveBeenCalledWith("LINE_STRIP", 0, testPoints);
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});
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it("allows squares to be drawn", function () {
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var testMin = [0, 1],
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testMax = [10, 10],
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testColor = [ 0.25, 0.33, 0.66, 1.0 ];
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glChart.drawSquare(testMin, testMax, testColor);
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expect(mockGL.uniform4fv)
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.toHaveBeenCalledWith("uColor", testColor);
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expect(mockGL.drawArrays)
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.toHaveBeenCalledWith("TRIANGLE_FAN", 0, 4);
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});
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});
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}
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); |