Add share pin

tests/components/Lobby.test.tsx

@@ -0,0 +1,229 @@
+import React from 'react';
+import { render, screen, waitFor } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { Lobby } from '../../components/Lobby';
+
+vi.mock('react-hot-toast', () => ({
+  default: {
+    success: vi.fn(),
+    error: vi.fn(),
+  },
+}));
+
+vi.mock('framer-motion', () => ({
+  motion: {
+    div: ({ children, ...props }: React.PropsWithChildren<Record<string, unknown>>) => <div {...props}>{children}</div>,
+  },
+  AnimatePresence: ({ children }: React.PropsWithChildren) => <>{children}</>,
+}));
+
+describe('Lobby', () => {
+  const defaultProps = {
+    quizTitle: 'Test Quiz',
+    players: [],
+    gamePin: 'ABC123',
+    role: 'HOST' as const,
+    onStart: vi.fn(),
+    onEndGame: vi.fn(),
+  };
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    Object.defineProperty(window, 'location', {
+      value: { origin: 'http://localhost:5173' },
+      writable: true,
+    });
+  });
+
+  describe('copy join link', () => {
+    it('shows copy link button for host', () => {
+      render(<Lobby {...defaultProps} />);
+      
+      expect(screen.getByTitle('Copy join link')).toBeInTheDocument();
+    });
+
+    it('does not show copy link button for client', () => {
+      render(<Lobby {...defaultProps} role="CLIENT" />);
+      
+      expect(screen.queryByTitle('Copy join link')).not.toBeInTheDocument();
+    });
+
+    it('copies join URL to clipboard when clicked', async () => {
+      const user = userEvent.setup();
+      render(<Lobby {...defaultProps} />);
+      
+      const copyButton = screen.getByTitle('Copy join link');
+      expect(copyButton.querySelector('.lucide-link')).toBeInTheDocument();
+      
+      await user.click(copyButton);
+      
+      await waitFor(() => {
+        expect(copyButton.querySelector('.lucide-check')).toBeInTheDocument();
+      });
+    });
+
+    it('shows success toast when link is copied', async () => {
+      const toast = await import('react-hot-toast');
+      const user = userEvent.setup();
+      render(<Lobby {...defaultProps} />);
+      
+      await user.click(screen.getByTitle('Copy join link'));
+      
+      await waitFor(() => {
+        expect(toast.default.success).toHaveBeenCalledWith('Join link copied!');
+      });
+    });
+
+    it('shows checkmark after copying link', async () => {
+      const user = userEvent.setup();
+      render(<Lobby {...defaultProps} gamePin="XYZ789" />);
+      
+      const copyButton = screen.getByTitle('Copy join link');
+      
+      await user.click(copyButton);
+      
+      await waitFor(() => {
+        expect(copyButton.querySelector('.lucide-check')).toBeInTheDocument();
+      });
+    });
+  });
+
+  describe('display', () => {
+    it('displays game PIN', () => {
+      render(<Lobby {...defaultProps} />);
+      
+      expect(screen.getByText('ABC123')).toBeInTheDocument();
+    });
+
+    it('displays quiz title on larger screens', () => {
+      render(<Lobby {...defaultProps} />);
+      
+      expect(screen.getByText('Test Quiz')).toBeInTheDocument();
+    });
+
+    it('displays player count', () => {
+      const players = [
+        { id: '1', name: 'Player 1', score: 0, avatarSeed: 0.1 },
+        { id: '2', name: 'Player 2', score: 0, avatarSeed: 0.2 },
+      ];
+      render(<Lobby {...defaultProps} players={players} />);
+      
+      expect(screen.getByText('2')).toBeInTheDocument();
+    });
+
+    it('shows waiting message when no players have joined', () => {
+      render(<Lobby {...defaultProps} />);
+      
+      expect(screen.getByText('Waiting for players to join...')).toBeInTheDocument();
+    });
+
+    it('displays player names when players join', () => {
+      const players = [
+        { id: '1', name: 'Alice', score: 0, avatarSeed: 0.1 },
+        { id: '2', name: 'Bob', score: 0, avatarSeed: 0.2 },
+      ];
+      render(<Lobby {...defaultProps} players={players} />);
+      
+      expect(screen.getByText('Alice')).toBeInTheDocument();
+      expect(screen.getByText('Bob')).toBeInTheDocument();
+    });
+  });
+
+  describe('host controls', () => {
+    it('shows Start button for host', () => {
+      render(<Lobby {...defaultProps} />);
+      
+      expect(screen.getByRole('button', { name: 'Start' })).toBeInTheDocument();
+    });
+
+    it('disables Start button when no players', () => {
+      render(<Lobby {...defaultProps} />);
+      
+      expect(screen.getByRole('button', { name: 'Start' })).toBeDisabled();
+    });
+
+    it('enables Start button when players joined', () => {
+      const players = [{ id: '1', name: 'Player 1', score: 0, avatarSeed: 0.1 }];
+      render(<Lobby {...defaultProps} players={players} />);
+      
+      expect(screen.getByRole('button', { name: 'Start' })).not.toBeDisabled();
+    });
+
+    it('calls onStart when Start clicked', async () => {
+      const user = userEvent.setup();
+      const players = [{ id: '1', name: 'Player 1', score: 0, avatarSeed: 0.1 }];
+      render(<Lobby {...defaultProps} players={players} />);
+      
+      await user.click(screen.getByRole('button', { name: 'Start' }));
+      
+      expect(defaultProps.onStart).toHaveBeenCalled();
+    });
+
+    it('shows End Game button when onEndGame provided', () => {
+      render(<Lobby {...defaultProps} />);
+      
+      expect(screen.getByText('End Game')).toBeInTheDocument();
+    });
+
+    it('calls onEndGame when End Game clicked', async () => {
+      const user = userEvent.setup();
+      render(<Lobby {...defaultProps} />);
+      
+      await user.click(screen.getByText('End Game'));
+      
+      expect(defaultProps.onEndGame).toHaveBeenCalled();
+    });
+  });
+
+  describe('client view', () => {
+    it('shows waiting message for client', () => {
+      render(<Lobby {...defaultProps} role="CLIENT" />);
+      
+      expect(screen.getByText('Waiting for the host to start...')).toBeInTheDocument();
+    });
+
+    it('shows player name when currentPlayerId matches', () => {
+      const players = [
+        { id: 'player-1', name: 'My Name', score: 0, avatarSeed: 0.5 },
+      ];
+      render(
+        <Lobby 
+          {...defaultProps} 
+          role="CLIENT" 
+          players={players}
+          currentPlayerId="player-1"
+        />
+      );
+      
+      expect(screen.getByText('My Name')).toBeInTheDocument();
+    });
+
+    it('does not show Start button for client', () => {
+      render(<Lobby {...defaultProps} role="CLIENT" />);
+      
+      expect(screen.queryByRole('button', { name: 'Start' })).not.toBeInTheDocument();
+    });
+  });
+
+  describe('host participates mode', () => {
+    it('shows host in player list when hostParticipates is true', () => {
+      const players = [
+        { id: 'host', name: 'Host Player', score: 0, avatarSeed: 0.99 },
+      ];
+      render(<Lobby {...defaultProps} players={players} hostParticipates={true} />);
+      
+      expect(screen.getByText('Host Player')).toBeInTheDocument();
+      expect(screen.getByText('HOST')).toBeInTheDocument();
+    });
+
+    it('does not show waiting message when host participates and no other players', () => {
+      const players = [
+        { id: 'host', name: 'Host Player', score: 0, avatarSeed: 0.99 },
+      ];
+      render(<Lobby {...defaultProps} players={players} hostParticipates={true} />);
+      
+      expect(screen.queryByText('Waiting for players to join...')).not.toBeInTheDocument();
+    });
+  });
+});

tests/hooks/useGame.navigation.test.tsx

@@ -1279,6 +1279,51 @@ describe('OAuth Callback Handling', () => {
   });
 });
 
+describe('/play/:pin URL Join Flow', () => {
+  describe('Landing PIN sync (regression: PIN field empty on /play/:pin)', () => {
+    it('should sync local PIN state when initialPin prop changes after async load', () => {
+      let initialPin: string | null = null;
+      let localPin = initialPin || '';
+      
+      const syncPin = (newInitialPin: string | null) => {
+        if (newInitialPin) {
+          localPin = newInitialPin;
+        }
+      };
+      
+      initialPin = 'TESTPIN';
+      syncPin(initialPin);
+      
+      expect(localPin).toBe('TESTPIN');
+    });
+
+    it('should preserve user-typed PIN when initialPin becomes null', () => {
+      let localPin = 'USER_TYPED';
+      
+      const syncPin = (newInitialPin: string | null) => {
+        if (newInitialPin) {
+          localPin = newInitialPin;
+        }
+      };
+      
+      syncPin(null);
+      
+      expect(localPin).toBe('USER_TYPED');
+    });
+
+    it('should force JOIN mode when initialPin is provided via URL', () => {
+      const getModeFromUrl = (searchParams: URLSearchParams, initialPin?: string): 'HOST' | 'JOIN' => {
+        if (initialPin) return 'JOIN';
+        const modeParam = searchParams.get('mode');
+        return modeParam === 'host' ? 'HOST' : 'JOIN';
+      };
+      
+      const searchParams = new URLSearchParams('?mode=host');
+      expect(getModeFromUrl(searchParams, 'TESTPIN')).toBe('JOIN');
+    });
+  });
+});
+
 describe('State Sync with Async Data Loading', () => {
   describe('Settings modal data sync', () => {
     it('should update editingDefaultConfig when defaultConfig loads', () => {

tests/setup.tsx

@@ -1,7 +1,18 @@
 import React from 'react';
 import '@testing-library/jest-dom/vitest';
 import { cleanup } from '@testing-library/react';
-import { afterEach, vi } from 'vitest';
+import { afterEach, vi, beforeAll } from 'vitest';
+
+beforeAll(() => {
+  Object.defineProperty(navigator, 'clipboard', {
+    value: {
+      writeText: vi.fn().mockResolvedValue(undefined),
+      readText: vi.fn().mockResolvedValue(''),
+    },
+    writable: true,
+    configurable: true,
+  });
+});
 
 afterEach(() => {
   cleanup();