
Karan Mehta
Mar 15, 2026 · 7 min read
An EdTech company was releasing features once every two weeks because staging testing required days of tedious manual validation. Any hotfix took hours of regression checking. We set up an automated testing framework to release developers from manual validation.
Here is the structure we used to automate user login. We mock non-essential network dependencies to speed up execution and prevent test flakiness:
import { test, expect } from '@playwright/test';
test.describe('Authentication Flows', () => {
test('User should login successfully with valid credentials', async ({ page }) => {
// Intercept and mock third-party analytics calls
await page.route('**/analytics-tracker/**', route => route.abort());
await page.goto('/login');
// Fill credentials using robust test ids
await page.fill('[data-testid="email-input"]', 'test.user@thinkalternate.com');
await page.fill('[data-testid="password-input"]', 'SuperSecurePass123!');
await page.click('[data-testid="submit-button"]');
// Verify successful routing and state
await expect(page).toHaveURL('/dashboard');
await expect(page.locator('[data-testid="user-greeting"]')).toContainText('Hello, Test User');
});
});Karan Mehta
Mar 15, 2026
7 min read
Mobile App Development