test suite for js/artwork.js (#4387)

* creating test for js/artwork.js

* Exporting modules for test

Author: omsuneri

js/__tests__/artwork.test.js

@@ -0,0 +1,62 @@
+global._THIS_IS_TURTLE_BLOCKS_ = true;  
+const { showMaterialHighlight, hideButtonHighlight, hidePaletteNameDisplay, COLLAPSEBUTTONXOFF, STANDARDBLOCKHEIGHT, FILLCOLORS, TURTLESVG } = require('../artwork');
+
+global.createjs = {
+    Shape: jest.fn(() => ({
+        graphics: { f: jest.fn().mockReturnThis(), drawCircle: jest.fn().mockReturnThis() },
+        alpha: 0,
+        x: 0,
+        y: 0
+    })),
+    Tween: {
+        get: jest.fn(() => ({
+            to: jest.fn().mockReturnThis()
+        }))
+    },
+    Ease: { circInOut: jest.fn() }
+};
+
+describe('artwork.js Test Suite', () => {
+    let mockStage;
+
+    beforeEach(() => {
+        mockStage = {
+            addChild: jest.fn(),
+            removeChild: jest.fn()
+        };
+    });
+
+    test('showMaterialHighlight creates highlight and active shapes', () => {
+        const event = { rawX: 100, rawY: 100 };
+        const scale = 1;
+        const result = showMaterialHighlight(50, 50, 10, event, scale, mockStage);
+        expect(result).toHaveProperty('highlight');
+        expect(result).toHaveProperty('active');
+        expect(mockStage.addChild).toHaveBeenCalledWith(result.highlight, result.active);
+    });
+
+    test('hideButtonHighlight removes highlight properly', () => {
+        jest.useFakeTimers();
+        const circles = { highlight: {}, active: {} };
+        hideButtonHighlight(circles, mockStage);
+        jest.runAllTimers();
+        expect(mockStage.removeChild).toBeCalledWith(circles.active, circles.highlight);
+        jest.useRealTimers();
+    });
+
+    test('hidePaletteNameDisplay removes palette text after delay', () => {
+        jest.useFakeTimers();
+        const paletteText = {};
+        hidePaletteNameDisplay(paletteText, mockStage);
+        jest.runAllTimers();
+        expect(mockStage.removeChild).toBeCalledWith(paletteText);
+        jest.useRealTimers();
+    });
+
+    test('Constants are correctly defined', () => {
+        expect(typeof COLLAPSEBUTTONXOFF).toBe('number');
+        expect(typeof STANDARDBLOCKHEIGHT).toBe('number');
+        expect(Array.isArray(FILLCOLORS)).toBe(true);
+        expect(typeof TURTLESVG).toBe('string');
+    });
+});