feat: add more roles (tech_lead, scrum_master, product_owner, designer, qa)

- Registration form: added 5 new role options to dropdown
- Sidebar: new roles get proper nav access via ALL_ROLES/LEADER_ROLES
- Dashboard: isLeader check expanded to include new leadership roles
- Shared/Pages: role badge colors added for all new roles
- Invite modal: expanded role dropdown

src/__tests__/Login.test.tsx

@@ -0,0 +1,107 @@
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, waitFor } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { LoginPage } from '../Login';
+import * as api from '../api';
+
+// Mock API
+vi.mock('../api', () => ({
+    apiLogin: vi.fn(),
+    apiRegister: vi.fn(),
+}));
+
+describe('LoginPage Component', () => {
+    const mockOnLogin = vi.fn();
+
+    beforeEach(() => {
+        vi.clearAllMocks();
+        mockOnLogin.mockClear();
+    });
+
+    it('renders login form by default', () => {
+        render(<LoginPage onLogin={mockOnLogin} />);
+        expect(screen.getByText(/scrum-manager/i)).toBeInTheDocument(); // Logo check
+        expect(screen.getByLabelText(/email/i)).toBeInTheDocument();
+        expect(screen.getByLabelText(/password/i)).toBeInTheDocument();
+        expect(screen.getByRole('button', { name: /sign in/i })).toBeInTheDocument();
+        expect(screen.getByText(/no account\? register here/i)).toBeInTheDocument();
+    });
+
+
+    it('switches to register mode', async () => {
+        render(<LoginPage onLogin={mockOnLogin} />);
+        await userEvent.click(screen.getByText(/no account\? register here/i));
+
+        expect(screen.getByLabelText(/name/i)).toBeInTheDocument();
+        expect(screen.getByRole('button', { name: /create account/i })).toBeInTheDocument();
+        expect(screen.getByText(/already have an account\? sign in/i)).toBeInTheDocument();
+    });
+
+    it('handles successful login', async () => {
+        const mockUser = { id: 'u1', name: 'Test', email: 'test@example.com', role: 'emp', dept: 'dev' };
+        (api.apiLogin as any).mockResolvedValue(mockUser);
+
+        render(<LoginPage onLogin={mockOnLogin} />);
+
+        await userEvent.type(screen.getByLabelText(/email/i), 'test@example.com');
+        await userEvent.type(screen.getByLabelText(/password/i), 'password');
+        await userEvent.click(screen.getByRole('button', { name: /sign in/i }));
+
+        await waitFor(() => {
+            expect(api.apiLogin).toHaveBeenCalledWith('test@example.com', 'password');
+            expect(mockOnLogin).toHaveBeenCalledWith(mockUser);
+        });
+    });
+
+    it('handles login failure', async () => {
+        (api.apiLogin as any).mockRejectedValue(new Error('Invalid credentials'));
+
+        render(<LoginPage onLogin={mockOnLogin} />);
+
+        await userEvent.type(screen.getByLabelText(/email/i), 'wrong@example.com');
+        await userEvent.type(screen.getByLabelText(/password/i), 'wrongpass');
+        await userEvent.click(screen.getByRole('button', { name: /sign in/i }));
+
+        await waitFor(() => {
+            expect(screen.getByText(/invalid credentials/i)).toBeInTheDocument();
+        });
+        expect(mockOnLogin).not.toHaveBeenCalled();
+    });
+
+    it('handles successful registration', async () => {
+        const mockUser = { id: 'u2', name: 'New User', email: 'new@example.com', role: 'employee', dept: 'dev' };
+        (api.apiRegister as any).mockResolvedValue(mockUser);
+
+        render(<LoginPage onLogin={mockOnLogin} />);
+        await userEvent.click(screen.getByText(/no account\? register here/i));
+
+        await userEvent.type(screen.getByLabelText(/name/i), 'New User');
+        await userEvent.type(screen.getByLabelText(/email/i), 'new@example.com');
+        await userEvent.type(screen.getByLabelText(/password/i), 'password123');
+        await userEvent.type(screen.getByLabelText(/department/i), 'DevOps'); // "e.g. Backend..." placeholder, checking label
+
+        await userEvent.click(screen.getByRole('button', { name: /create account/i }));
+
+        await waitFor(() => {
+            expect(api.apiRegister).toHaveBeenCalledWith({
+                name: 'New User',
+                email: 'new@example.com',
+                password: 'password123',
+                role: 'employee', // Default
+                dept: 'DevOps'
+            });
+            expect(mockOnLogin).toHaveBeenCalledWith(mockUser);
+        });
+    });
+
+    it('validates registration inputs', async () => {
+        render(<LoginPage onLogin={mockOnLogin} />);
+        await userEvent.click(screen.getByText(/no account\? register here/i));
+
+        await userEvent.click(screen.getByRole('button', { name: /create account/i }));
+
+        expect(screen.getByText(/all fields are required/i)).toBeInTheDocument();
+        expect(api.apiRegister).not.toHaveBeenCalled();
+    });
+});