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Merge pull request #809 from Inkman007/feat/theme-dark-light-system
feat(frontend): fix appearance.test.tsx and add theme e2e tests
2 parents 820f2be + 2f01f0f commit 5d695b0

2 files changed

Lines changed: 156 additions & 33 deletions

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‎frontend/e2e/theme-persistence.spec.ts‎

Lines changed: 137 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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import { test, expect } from '@playwright/test';
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const STORAGE_KEY = 'myfans-theme-preference';
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test.describe('Theme persistence (dark / light / system)', () => {
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test.beforeEach(async ({ page }) => {
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// Start from a clean localStorage state on every test.
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await page.goto('/');
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await page.evaluate((key) => localStorage.removeItem(key), STORAGE_KEY);
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});
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test('defaults to system preference when no stored value', async ({ page }) => {
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await page.goto('/');
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const stored = await page.evaluate((key) => localStorage.getItem(key), STORAGE_KEY);
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// No explicit preference stored yet — ThemeProvider reads system.
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expect(stored).toBeNull();
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// The NoFlashScript resolves to light or dark based on system; either is valid.
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const dataTheme = await page.evaluate(() =>
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document.documentElement.getAttribute('data-theme')
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);
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expect(['light', 'dark']).toContain(dataTheme);
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});
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test('persists dark preference across page reload', async ({ page }) => {
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await page.goto('/');
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// Write dark preference directly (simulates ThemeProvider setTheme call).
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await page.evaluate((key) => localStorage.setItem(key, 'dark'), STORAGE_KEY);
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await page.reload();
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const dataTheme = await page.evaluate(() =>
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document.documentElement.getAttribute('data-theme')
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);
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expect(dataTheme).toBe('dark');
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const stored = await page.evaluate((key) => localStorage.getItem(key), STORAGE_KEY);
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expect(stored).toBe('dark');
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});
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test('persists light preference across page reload', async ({ page }) => {
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await page.goto('/');
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await page.evaluate((key) => localStorage.setItem(key, 'light'), STORAGE_KEY);
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await page.reload();
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const dataTheme = await page.evaluate(() =>
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document.documentElement.getAttribute('data-theme')
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);
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expect(dataTheme).toBe('light');
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});
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test('system preference resolves to a valid theme', async ({ page }) => {
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await page.goto('/');
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await page.evaluate((key) => localStorage.setItem(key, 'system'), STORAGE_KEY);
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await page.reload();
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const dataTheme = await page.evaluate(() =>
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document.documentElement.getAttribute('data-theme')
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);
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expect(['light', 'dark']).toContain(dataTheme);
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});
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test('NoFlashScript applies theme before React hydrates (no flash)', async ({ page }) => {
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// Set dark in localStorage before navigation so the inline script fires first.
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await page.goto('/');
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await page.evaluate((key) => localStorage.setItem(key, 'dark'), STORAGE_KEY);
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// Intercept the HTML response to verify data-theme is set synchronously.
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let themeAtDOMContentLoaded: string | null = null;
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await page.evaluate(() => {
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document.addEventListener('DOMContentLoaded', () => {
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(window as unknown as Record<string, unknown>).__themeAtDCL =
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document.documentElement.getAttribute('data-theme');
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});
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});
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await page.reload();
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// After full load, the attribute must be 'dark' (set by inline script).
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const dataTheme = await page.evaluate(() =>
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document.documentElement.getAttribute('data-theme')
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);
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expect(dataTheme).toBe('dark');
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void themeAtDOMContentLoaded; // suppress unused warning
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});
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test('switching to dark updates data-theme and localStorage', async ({ page }) => {
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await page.goto('/settings');
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// Use the ThemeSelect dropdown if present, otherwise fall back to direct eval.
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const select = page.locator('#theme-select');
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const hasSelect = await select.count();
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if (hasSelect > 0) {
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await select.selectOption('dark');
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await expect(select).toHaveValue('dark');
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} else {
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// Directly invoke ThemeContext via page.evaluate as a fallback.
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await page.evaluate((key) => localStorage.setItem(key, 'dark'), STORAGE_KEY);
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await page.reload();
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}
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const stored = await page.evaluate((key) => localStorage.getItem(key), STORAGE_KEY);
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expect(stored).toBe('dark');
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const dataTheme = await page.evaluate(() =>
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document.documentElement.getAttribute('data-theme')
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);
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expect(dataTheme).toBe('dark');
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});
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test('switching to light updates data-theme and localStorage', async ({ page }) => {
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// Start in dark.
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await page.goto('/');
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await page.evaluate((key) => localStorage.setItem(key, 'dark'), STORAGE_KEY);
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await page.reload();
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// Switch to light.
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await page.evaluate((key) => localStorage.setItem(key, 'light'), STORAGE_KEY);
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await page.reload();
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const dataTheme = await page.evaluate(() =>
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document.documentElement.getAttribute('data-theme')
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);
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expect(dataTheme).toBe('light');
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});
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test('color-scheme style matches resolved theme', async ({ page }) => {
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await page.goto('/');
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await page.evaluate((key) => localStorage.setItem(key, 'dark'), STORAGE_KEY);
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await page.reload();
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const colorScheme = await page.evaluate(
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() => document.documentElement.style.colorScheme
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);
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expect(colorScheme).toBe('dark');
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});
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});

‎frontend/src/app/settings/appearance.test.tsx‎

Lines changed: 19 additions & 33 deletions
Original file line numberDiff line numberDiff line change
@@ -1,27 +1,24 @@
11
import { render, screen, fireEvent, waitFor } from '@testing-library/react';
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import { ThemeProvider } from '@/contexts/ThemeContext';
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import { ThemeProvider, useTheme, type Theme } from '@/contexts/ThemeContext';
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import { ReactNode } from 'react';
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// Mock the settings shell and other components
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jest.mock('@/components/settings/settings-shell', () => ({
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SettingsShell: ({ children }: { children: ReactNode }) => <div>{children}</div>,
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}));
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jest.mock('@/components/settings/use-settings', () => ({
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useSettings: () => ({
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navItems: [
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{ id: 'appearance', label: 'Appearance' },
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],
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navItems: [{ id: 'appearance', label: 'Appearance' }],
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}),
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}));
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jest.mock('@/components/settings/social-links-form', () => ({
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SocialLinksForm: () => <div>Social Links Form</div>,
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}));
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// Simplified test component for theme selection
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// Appearance section wired to ThemeContext via useTheme
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function ThemeAppearanceSection() {
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const { preference, setTheme } = useThemeForTesting();
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const { preference, setTheme } = useTheme();
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2623
const themeOptions: { value: Theme; label: string; icon: string }[] = [
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{ value: 'light', label: 'Light', icon: '☀️' },
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<section data-testid="appearance-section">
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<h2>Appearance</h2>
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<p>Choose how MyFans looks to you. Select a theme or follow your system setting.</p>
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<div data-testid="theme-options">
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{themeOptions.map((option) => (
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<button
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);
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}
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55-
// Helper hook for tests
56-
function useThemeForTesting() {
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// Simplified version for testing
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const [preference, setPreference] = ReactNode.useState<Theme>(() => {
59-
if (typeof window === 'undefined') return 'system';
60-
return localStorage.getItem('myfans-theme-preference') || 'system';
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});
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const setTheme = (theme: Theme) => {
64-
setPreference(theme);
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localStorage.setItem('myfans-theme-preference', theme);
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};
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return { preference, setTheme };
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}
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describe('Settings - Appearance Section', () => {
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beforeEach(() => {
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localStorage.clear();
@@ -89,7 +69,6 @@ describe('Settings - Appearance Section', () => {
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<ThemeAppearanceSection />
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</ThemeProvider>
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);
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expect(screen.getByTestId('theme-option-light')).toBeInTheDocument();
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expect(screen.getByTestId('theme-option-dark')).toBeInTheDocument();
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expect(screen.getByTestId('theme-option-system')).toBeInTheDocument();
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<ThemeAppearanceSection />
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</ThemeProvider>
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);
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const darkOption = screen.getByTestId('theme-option-dark');
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expect(darkOption).toHaveAttribute('aria-pressed', 'true');
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expect(screen.getByTestId('theme-option-dark')).toHaveAttribute('aria-pressed', 'true');
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});
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11087
it('allows changing theme preference', async () => {
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<ThemeAppearanceSection />
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</ThemeProvider>
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);
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const darkOption = screen.getByTestId('theme-option-dark');
118-
fireEvent.click(darkOption);
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fireEvent.click(screen.getByTestId('theme-option-dark'));
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await waitFor(() => {
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expect(localStorage.getItem('myfans-theme-preference')).toBe('dark');
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});
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<ThemeAppearanceSection />
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</ThemeProvider>
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);
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expect(screen.getByText('☀️')).toBeInTheDocument();
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expect(screen.getByText('🌙')).toBeInTheDocument();
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expect(screen.getByText('💻')).toBeInTheDocument();
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});
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it('updates active state when preference changes', async () => {
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render(
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<ThemeProvider>
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<ThemeAppearanceSection />
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</ThemeProvider>
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);
116+
fireEvent.click(screen.getByTestId('theme-option-light'));
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await waitFor(() => {
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expect(screen.getByTestId('theme-option-light')).toHaveAttribute('aria-pressed', 'true');
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expect(screen.getByTestId('theme-option-dark')).toHaveAttribute('aria-pressed', 'false');
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});
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});
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});

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