/***************************************************************************** * 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. *****************************************************************************/ /*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/ /** * MergeModelsSpec. Created by vwoeltje on 11/6/14. */ define( ["../src/MCTChart"], function (MCTChart) { "use strict"; describe("The mct-chart directive", function () { var mockInterval, mockLog, mockScope, mockElement, mockCanvas, mockGL, mockC2d, mockPromise, mctChart; beforeEach(function () { mockInterval = jasmine.createSpy("$interval"); mockLog = jasmine.createSpyObj("$log", ["warn", "info", "debug"]); mockScope = jasmine.createSpyObj("$scope", ["$watchCollection", "$on"]); mockElement = jasmine.createSpyObj("element", ["find", "html"]); mockInterval.cancel = jasmine.createSpy("cancelInterval"); mockPromise = jasmine.createSpyObj("promise", ["then"]); // mct-chart uses GLChart, so it needs WebGL API mockCanvas = jasmine.createSpyObj("canvas", [ "getContext", "addEventListener" ]); mockGL = jasmine.createSpyObj( "gl", [ "createShader", "compileShader", "shaderSource", "attachShader", "createProgram", "linkProgram", "useProgram", "enableVertexAttribArray", "getAttribLocation", "getUniformLocation", "createBuffer", "lineWidth", "enable", "blendFunc", "viewport", "clear", "uniform2fv", "uniform4fv", "bufferData", "bindBuffer", "vertexAttribPointer", "drawArrays" ] ); mockC2d = jasmine.createSpyObj('c2d', ['clearRect']); mockGL.ARRAY_BUFFER = "ARRAY_BUFFER"; mockGL.DYNAMIC_DRAW = "DYNAMIC_DRAW"; mockGL.TRIANGLE_FAN = "TRIANGLE_FAN"; mockGL.LINE_STRIP = "LINE_STRIP"; // Echo back names for uniform locations, so we can // test which of these are set for certain operations. mockGL.getUniformLocation.andCallFake(function (a, name) { return name; }); mockElement.find.andReturn([mockCanvas]); mockCanvas.getContext.andCallFake(function (type) { return { webgl: mockGL, '2d': mockC2d }[type]; }); mockInterval.andReturn(mockPromise); mctChart = new MCTChart(mockInterval, mockLog); }); it("is applicable at the element level", function () { expect(mctChart.restrict).toEqual("E"); }); it("places a 'draw' attribute in-scope", function () { // Should ask Angular for the draw attribute expect(mctChart.scope.draw).toEqual("="); }); it("watches for changes in the drawn object", function () { mctChart.link(mockScope, mockElement); expect(mockScope.$watchCollection) .toHaveBeenCalledWith("draw", jasmine.any(Function)); }); it("issues one draw call per line", function () { mctChart.link(mockScope, mockElement); mockScope.$watchCollection.mostRecentCall.args[1]({ lines: [ {}, {}, {} ] }); expect(mockGL.drawArrays.calls.length).toEqual(3); }); it("issues one draw call per box", function () { mctChart.link(mockScope, mockElement); mockScope.$watchCollection.mostRecentCall.args[1]({ boxes: [ { start: [0, 0], end: [1, 1] }, { start: [0, 0], end: [1, 1] }, { start: [0, 0], end: [1, 1] }, { start: [0, 0], end: [1, 1] } ] }); expect(mockGL.drawArrays.calls.length).toEqual(4); }); it("does not fail if no draw object is in scope", function () { mctChart.link(mockScope, mockElement); expect(mockScope.$watchCollection.mostRecentCall.args[1]) .not.toThrow(); }); it("draws on canvas resize", function () { mctChart.link(mockScope, mockElement); // Should track canvas size in an interval expect(mockInterval).toHaveBeenCalledWith( jasmine.any(Function), jasmine.any(Number) ); // Verify pre-condition expect(mockGL.clear).not.toHaveBeenCalled(); mockCanvas.width = 100; mockCanvas.offsetWidth = 150; mockCanvas.height = 200; mockCanvas.offsetHeight = 200; mockInterval.mostRecentCall.args[0](); // Use clear as an indication that drawing has occurred expect(mockGL.clear).toHaveBeenCalled(); }); it("warns if no WebGL context is available", function () { mockCanvas.getContext.andReturn(undefined); mctChart.link(mockScope, mockElement); expect(mockLog.warn).toHaveBeenCalled(); }); it("falls back to Canvas 2d API if WebGL context is lost", function () { mctChart.link(mockScope, mockElement); expect(mockCanvas.addEventListener) .toHaveBeenCalledWith("webglcontextlost", jasmine.any(Function)); expect(mockCanvas.getContext).not.toHaveBeenCalledWith('2d'); mockCanvas.addEventListener.mostRecentCall.args[1](); expect(mockCanvas.getContext).toHaveBeenCalledWith('2d'); }); it("logs nothing in nominal situations (WebGL available)", function () { // Complement the previous test mctChart.link(mockScope, mockElement); expect(mockLog.warn).not.toHaveBeenCalled(); }); // Avoid resource leaks it("stops polling for size changes on destroy", function () { mctChart.link(mockScope, mockElement); // Should be listening for a destroy event expect(mockScope.$on).toHaveBeenCalledWith( "$destroy", jasmine.any(Function) ); // Precondition - interval still active expect(mockInterval.cancel).not.toHaveBeenCalled(); // Broadcast a $destroy mockScope.$on.mostRecentCall.args[1](); // Should have stopped the interval expect(mockInterval.cancel).toHaveBeenCalledWith(mockPromise); }); }); } );