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import { describe, it, expect, beforeEach, vi } from 'vitest'; |
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import { initTheme, toggleTheme } from '../../../src/services/theme'; |
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const mockLocalStorage = { |
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getItem: vi.fn(), |
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setItem: vi.fn(), |
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removeItem: vi.fn(), |
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clear: vi.fn(), |
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}; |
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Object.defineProperty(window, 'localStorage', { |
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value: mockLocalStorage, |
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}); |
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describe('Theme Service', () => { |
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beforeEach(() => { |
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vi.clearAllMocks(); |
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document.documentElement.removeAttribute('data-theme'); |
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}); |
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describe('initTheme', () => { |
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it('should set OS theme as default when no saved theme', () => { |
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mockLocalStorage.getItem.mockReturnValue(null); |
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// Mock matchMedia to return light theme |
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Object.defineProperty(window, 'matchMedia', { |
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writable: true, |
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value: vi.fn().mockImplementation(query => ({ |
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matches: query === '(prefers-color-scheme: dark)' ? false : false, |
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media: query, |
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onchange: null, |
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addListener: vi.fn(), |
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removeListener: vi.fn(), |
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addEventListener: vi.fn(), |
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removeEventListener: vi.fn(), |
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dispatchEvent: vi.fn(), |
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})), |
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}); |
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initTheme(); |
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expect(document.documentElement.getAttribute('data-theme')).toBe('light'); |
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}); |
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it('should set saved theme from localStorage', () => { |
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mockLocalStorage.getItem.mockReturnValue('light'); |
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initTheme(); |
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expect(document.documentElement.getAttribute('data-theme')).toBe('light'); |
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}); |
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it('should set dark theme when saved theme is dark', () => { |
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mockLocalStorage.getItem.mockReturnValue('dark'); |
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initTheme(); |
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expect(document.documentElement.getAttribute('data-theme')).toBe('dark'); |
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}); |
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it('should set dark theme when OS prefers dark', () => { |
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mockLocalStorage.getItem.mockReturnValue(null); |
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// Mock matchMedia to return dark theme |
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Object.defineProperty(window, 'matchMedia', { |
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writable: true, |
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value: vi.fn().mockImplementation(query => ({ |
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matches: query === '(prefers-color-scheme: dark)', |
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media: query, |
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onchange: null, |
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addListener: vi.fn(), |
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removeListener: vi.fn(), |
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addEventListener: vi.fn(), |
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removeEventListener: vi.fn(), |
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dispatchEvent: vi.fn(), |
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})), |
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}); |
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initTheme(); |
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expect(document.documentElement.getAttribute('data-theme')).toBe('dark'); |
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}); |
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}); |
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describe('toggleTheme', () => { |
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it('should toggle from dark to light', () => { |
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document.documentElement.setAttribute('data-theme', 'dark'); |
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toggleTheme(); |
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expect(document.documentElement.getAttribute('data-theme')).toBe('light'); |
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expect(mockLocalStorage.setItem).toHaveBeenCalledWith('theme', 'light'); |
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}); |
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it('should toggle from light to dark', () => { |
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document.documentElement.setAttribute('data-theme', 'light'); |
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toggleTheme(); |
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expect(document.documentElement.getAttribute('data-theme')).toBe('dark'); |
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expect(mockLocalStorage.setItem).toHaveBeenCalledWith('theme', 'dark'); |
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}); |
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it('should handle undefined theme by setting to light', () => { |
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document.documentElement.removeAttribute('data-theme'); |
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toggleTheme(); |
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expect(document.documentElement.getAttribute('data-theme')).toBe('dark'); |
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expect(mockLocalStorage.setItem).toHaveBeenCalledWith('theme', 'dark'); |
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}); |
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}); |
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}); |
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JesusValeraDev /
bip39
