test suite for js/turtles.js (#4378)

* creating test for js/turtles.js

* Exporting modules for test

* Rewriting test suite for turtles.js 

as after some changes in the root file js/turtles.js some of tests are failing which is now being working fine

Author: omsuneri

js/__tests__/turtles.test.js

@@ -0,0 +1,103 @@
+const Turtles = require('../turtles'); 
+
+global.createjs = {
+    Container: jest.fn().mockImplementation(() => ({
+        addChild: jest.fn(),
+        removeAllChildren: jest.fn(),
+        on: jest.fn(),
+        removeAllEventListeners: jest.fn(),
+    })),
+    Bitmap: jest.fn().mockImplementation(() => ({})),
+};
+
+global.importMembers = jest.fn();
+global.setupRhythmActions = jest.fn();
+global.setupMeterActions = jest.fn();
+global.setupPitchActions = jest.fn();
+global.setupIntervalsActions = jest.fn();
+global.setupToneActions = jest.fn();
+global.setupOrnamentActions = jest.fn();
+global.setupVolumeActions = jest.fn();
+global.setupDrumActions = jest.fn();
+global.setupDictActions = jest.fn();
+
+global.Turtle = jest.fn().mockImplementation(() => ({
+    painter: {
+        doSetHeading: jest.fn(),
+        doSetPensize: jest.fn(),
+        doSetChroma: jest.fn(),
+        doSetValue: jest.fn(),
+        doSetColor: jest.fn(),
+    },
+    rename: jest.fn(),
+    container: {
+        scaleX: 1,
+        scaleY: 1,
+        scale: 1,
+        on: jest.fn(),
+        removeAllEventListeners: jest.fn(),
+    },
+}));
+
+describe('Turtles Class', () => {
+    let activityMock;
+    let turtles;
+
+    beforeEach(() => {
+        activityMock = {
+            stage: { addChild: jest.fn(), removeChild: jest.fn() },
+            refreshCanvas: jest.fn(),
+            turtleContainer: new createjs.Container(),
+            hideAuxMenu: jest.fn(),
+            hideGrids: jest.fn(),
+            _doCartesianPolar: jest.fn(),
+        };
+
+        turtles = new Turtles(activityMock);
+        turtles.activity = activityMock;
+        turtles.getTurtleCount = jest.fn().mockReturnValue(0);
+        turtles.getTurtle = jest.fn(() => ({
+            container: {
+                scaleX: 1,
+                scaleY: 1,
+                scale: 1,
+            },
+        }));
+
+        turtles.pushTurtle = jest.fn();
+        turtles.addTurtleStageProps = jest.fn();
+        turtles.createArtwork = jest.fn();
+        turtles.createHitArea = jest.fn();
+        turtles.addTurtleGraphicProps = jest.fn();
+        turtles.isShrunk = jest.fn().mockReturnValue(false);
+        document.body.innerHTML = '<div id="loader"></div>';
+    });
+
+    test('should initialize properly', () => {
+        expect(turtles.activity).not.toBeUndefined();
+        expect(global.importMembers).toHaveBeenCalledWith(turtles, "", [activityMock]);
+    });
+
+    test('should call initActions on construction', () => {
+        const spy = jest.spyOn(turtles, 'initActions');
+        turtles.initActions();
+        expect(spy).toHaveBeenCalled();
+    });
+
+    test('should add a turtle properly', () => {
+        turtles.addTurtle({}, { id: 1, name: 'TestTurtle' });
+
+        expect(turtles.getTurtleCount).toHaveBeenCalled();
+        expect(turtles.pushTurtle).toHaveBeenCalled();
+        expect(turtles.addTurtleStageProps).toHaveBeenCalled();
+        expect(turtles.createArtwork).toHaveBeenCalled();
+        expect(turtles.createHitArea).toHaveBeenCalled();
+        expect(turtles.addTurtleGraphicProps).toHaveBeenCalled();
+        expect(turtles.isShrunk).toHaveBeenCalled();
+    });
+
+    test('should toggle running state correctly', () => {
+        turtles.markAllAsStopped();
+        expect(activityMock.refreshCanvas).toHaveBeenCalled();
+    });
+});

js/turtles.js

@@ -1322,3 +1322,7 @@ Turtles.TurtlesView = class {
         return this;
     }
 };
+
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = Turtles;
+}