Add frontend testing - Playwright

frontend/tests/auth/login.spec.ts

@@ -0,0 +1,109 @@
+import { test, expect } from '@playwright/test';
+import { login, logout, TEST_USER } from '../helpers/auth';
+
+test.describe('Login Flow', () => {
+  test.beforeEach(async ({ page }) => {
+    // Start at login page
+    await page.goto('/login');
+  });
+
+  test('should display login form', async ({ page }) => {
+    // Verify login page elements are visible
+    await expect(page.getByLabel(/email/i)).toBeVisible();
+    await expect(page.getByLabel(/password/i)).toBeVisible();
+    await expect(page.getByRole('button', { name: /log in|sign in|login/i })).toBeVisible();
+  });
+
+  test('should successfully login with valid credentials', async ({ page }) => {
+    // Fill in credentials
+    await page.getByLabel(/email/i).fill(TEST_USER.email);
+    await page.getByLabel(/password/i).fill(TEST_USER.password);
+
+    // Click login button
+    await page.getByRole('button', { name: /log in|sign in|login/i }).click();
+
+    // Should redirect to dashboard or app
+    await expect(page).toHaveURL(/\/(app|dashboard)/, { timeout: 10000 });
+
+    // Verify we see dashboard content
+    await expect(page.locator('body')).toContainText(/dashboard|panel de control/i);
+  });
+
+  test('should show error with invalid email', async ({ page }) => {
+    // Fill in invalid credentials
+    await page.getByLabel(/email/i).fill('invalid@email.com');
+    await page.getByLabel(/password/i).fill('wrongpassword');
+
+    // Click login button
+    await page.getByRole('button', { name: /log in|sign in|login/i }).click();
+
+    // Should show error message
+    await expect(page.locator('body')).toContainText(/invalid|incorrect|error|credenciales/i, {
+      timeout: 5000,
+    });
+
+    // Should stay on login page
+    await expect(page).toHaveURL(/\/login/);
+  });
+
+  test('should show validation error for empty email', async ({ page }) => {
+    // Try to submit without email
+    await page.getByLabel(/password/i).fill('somepassword');
+    await page.getByRole('button', { name: /log in|sign in|login/i }).click();
+
+    // Should show validation error (either inline or toast)
+    const bodyText = await page.locator('body').textContent();
+    expect(bodyText).toMatch(/required|obligatorio|necesario/i);
+  });
+
+  test('should show validation error for empty password', async ({ page }) => {
+    // Try to submit without password
+    await page.getByLabel(/email/i).fill('test@example.com');
+    await page.getByRole('button', { name: /log in|sign in|login/i }).click();
+
+    // Should show validation error
+    const bodyText = await page.locator('body').textContent();
+    expect(bodyText).toMatch(/required|obligatorio|necesario/i);
+  });
+
+  test('should toggle password visibility', async ({ page }) => {
+    const passwordInput = page.getByLabel(/password/i);
+
+    // Initially should be password type
+    await expect(passwordInput).toHaveAttribute('type', 'password');
+
+    // Look for toggle button (eye icon, "show password", etc.)
+    const toggleButton = page.locator('button:has-text("Show"), button:has-text("Mostrar"), button[aria-label*="password"]').first();
+
+    if (await toggleButton.isVisible()) {
+      await toggleButton.click();
+
+      // Should change to text type
+      await expect(passwordInput).toHaveAttribute('type', 'text');
+
+      // Toggle back
+      await toggleButton.click();
+      await expect(passwordInput).toHaveAttribute('type', 'password');
+    }
+  });
+
+  test('should have link to registration page', async ({ page }) => {
+    // Look for register/signup link
+    const registerLink = page.getByRole('link', { name: /register|sign up|crear cuenta/i });
+
+    if (await registerLink.isVisible()) {
+      await expect(registerLink).toHaveAttribute('href', /\/register/);
+    }
+  });
+
+  test('should redirect to app if already logged in', async ({ page, context }) => {
+    // First login
+    await login(page, TEST_USER);
+
+    // Try to go to login page again
+    await page.goto('/login');
+
+    // Should redirect to app/dashboard
+    await expect(page).toHaveURL(/\/(app|dashboard)/, { timeout: 5000 });
+  });
+});