test suite for js/palette.js (#4403)

* creating test for js/palette.js

* Exporting modules for test

Author: omsuneri

js/__tests__/palette.test.js

@@ -0,0 +1,126 @@
+const { Palettes, initPalettes } = require('../palette');
+
+global.LEADING = 10;
+global.DEFAULTPALETTE = "default";
+global.MULTIPALETTES = ["palette1", "palette2"];
+global.PALETTEICONS = { "search": "<svg></svg>", "palette1": "<svg></svg>", "palette2": "<svg></svg>" };
+global.MULTIPALETTEICONS = ["palette1", "palette2"];
+global.SKIPPALETTES = [];
+global.toTitleCase = (str) => str.charAt(0).toUpperCase() + str.slice(1);
+global._ = (str) => str;
+global.platformColor = {
+    selectorSelected: "#000",
+    paletteBackground: "#fff",
+    strokeColor: "#333",
+    fillColor: "#666",
+    paletteLabelBackground: "#ccc",
+    hoverColor: "#ddd",
+    paletteText: "#000"
+};
+
+describe('Palettes Class', () => {
+    let mockActivity;
+    let palettes;
+
+    beforeEach(() => {
+        const paletteMock = {
+            style: { visibility: 'visible' },
+            children: [
+                {
+                    children: [
+                        {},
+                        {
+                            children: [
+                                {},
+                                {
+                                    parentNode: { removeChild: jest.fn() }, 
+                                    appendChild: jest.fn(() => ({})),
+                                }
+                            ]
+                        }
+                    ]
+                }
+            ]
+        };
+
+        global.docById = jest.fn((id) => {
+            if (id === "PaletteBody") {
+                return { parentNode: { removeChild: jest.fn() } };
+            }
+            if (id === "palette") {
+                return {
+                    ...paletteMock,
+                    children: [
+                        { children: [{}, { children: [{}, { removeChild: jest.fn(), appendChild: jest.fn(() => ({})) }] }] }
+                    ],
+                };
+            }
+            return { style: {}, appendChild: jest.fn(), removeChild: jest.fn() };
+        });
+    
+        mockActivity = {
+            cellSize: 50,
+            blocks: { protoBlockDict: {}, makeBlock: jest.fn(() => ({})) },
+            hideSearchWidget: jest.fn(),
+            showSearchWidget: jest.fn(),
+            palettes: {},
+        };
+        
+        palettes = new Palettes(mockActivity);
+    });
+
+    test('constructor initializes properties correctly', () => {
+        expect(palettes.activity).toBe(mockActivity);
+        expect(palettes.cellSize).toBe(Math.floor(50 * 0.5 + 0.5));
+    });
+
+    test('init method sets halfCellSize', () => {
+        palettes.init();
+        expect(palettes.halfCellSize).toBe(Math.floor(palettes.cellSize / 2));
+    });
+
+    test('setSize updates cellSize', () => {
+        palettes.setSize(100);
+        expect(palettes.cellSize).toBe(Math.floor(100 * 0.5 + 0.5));
+    });
+
+    test('setMobile updates mobile flag and hides menus', () => {
+        const spyHideMenus = jest.spyOn(palettes, '_hideMenus');
+        palettes.setMobile(true);
+        expect(palettes.mobile).toBe(true);
+        expect(spyHideMenus).toHaveBeenCalled();
+    });
+
+    test('getProtoNameAndPalette returns correct values', () => {
+        mockActivity.blocks.protoBlockDict = {
+            testBlock: { name: 'testBlock', palette: { name: 'testPalette' }, hidden: false }
+        };
+        expect(palettes.getProtoNameAndPalette('testBlock')).toEqual(['testBlock', 'testPalette', 'testBlock']);
+    });
+
+    test('hide and show functions modify visibility', () => {
+        palettes.hide();
+        console.log('Visibility after hide:', docById('palette').style.visibility);
+        expect(docById('palette').style.visibility).toBe('hidden');
+        palettes.show();
+        console.log('Visibility after show:', docById('palette').style.visibility);
+        expect(docById('palette').style.visibility).toBe('visible');
+    });
+});
+
+describe('initPalettes function', () => {
+    let palettes;
+
+    beforeEach(() => {
+        palettes = { add: jest.fn(), init_selectors: jest.fn(), makePalettes: jest.fn(), show: jest.fn() };
+        global.BUILTINPALETTES = ['default'];
+    });
+
+    test('initPalettes initializes palettes correctly', async () => {
+        await initPalettes(palettes);
+        expect(palettes.add).toHaveBeenCalledWith('default');
+        expect(palettes.init_selectors).toHaveBeenCalled();
+        expect(palettes.makePalettes).toHaveBeenCalledWith(0);
+        expect(palettes.show).toHaveBeenCalled();
+    });
+});

js/palette.js

@@ -1452,3 +1452,7 @@ const initPalettes = async (palettes) => {
     console.debug("Time to show the palettes.");
     palettes.show();
 };
+
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = { Palettes, initPalettes };
+}