SDET (Software Development Engineer in Test) Career Path

// tests/checkout.spec.ts — the UI test you will actually be asked for
import { test, expect } from '@playwright/test';

test('a signed-in user can place an order', async ({ page }) => {
  await page.goto('/cart');
  await page.getByRole('button', { name: 'Checkout' }).click();
  await expect(page.getByRole('heading', { name: /order confirmed/i }))
    .toBeVisible({ timeout: 15_000 });
});

// tests/orders.api.spec.ts — the layer 102 of 163 postings ask for
import { test, expect, request } from '@playwright/test';

test('POST /orders rejects a negative quantity', async () => {
  const api = await request.newContext({ baseURL: process.env.API_URL });
  const res = await api.post('/orders', { data: { sku: 'A-1', qty: -3 } });
  expect(res.status()).toBe(422);
  expect((await res.json()).error).toMatch(/qty/i);
});

# .github/workflows/tests.yml — 106 of 163 postings name CI/CD
name: tests
on: [pull_request]
jobs:
  e2e:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with: { node-version: 22, cache: npm }
      - run: npm ci
      - run: npx playwright install --with-deps chromium
      - run: npx playwright test --grep-invert @quarantine
      - uses: actions/upload-artifact@v4
        if: always()
        with: { name: report, path: playwright-report }

// scripts/quarantine.mjs — tag a test @quarantine instead of deleting it
// Reads the JSON reporter output and lists specs that failed on a retry
// but passed on another attempt in the same run: that is flake, not a bug.
import { readFileSync } from 'node:fs';

const run = JSON.parse(readFileSync('report.json', 'utf8'));
const flaky = run.suites
  .flatMap((s) => s.specs ?? [])
  .filter((spec) => spec.tests.some((t) => t.status === 'flaky'));

if (flaky.length) {
  console.log('Quarantine candidates:');
  for (const s of flaky) console.log(' -', s.title);
  process.exitCode = 0; // never fail the build on flake detection itself
}