<img src="https://r2cdn.perplexity.ai/pplx-full-logo-primary-dark%402x.png" style="height:64px;margin-right:32px"/>

# Lets expand on this into a dev plan and for starters we are going to use a shared server, with c-panel and node.js app install capabilities, also has database capabilities and domain and dns management:

W — Automated Test Suite: Playwright config already exists in the repo — expand it into a full E2E suite. Add Vitest for unit tests and MSW for API mocking. Target >80% coverage on core auth and billing flows

For Phase W on your shared cPanel stack, expand what you already have into three layers: **Playwright E2E**, **Vitest unit/component tests**, and **MSW-powered integration tests**, with coverage focused on auth and billing.

***

## 1. Playwright E2E: core flows first

You already have Playwright config; turn it into a focused suite around critical flows, using best practices like POM and stable selectors.[^1][^2][^3][^4][^5]

**Targets (E2E):**

- Auth:
    - Sign up (if enabled) and login.
    - Forgot/reset password (if present).
    - Tenant switching (if applicable).
- Billing:
    - Upgrade/downgrade plan (Stripe flow).
    - Cancel subscription.
    - Verify that correct plan/limits show in dashboard after payment.

**Steps:**

1. **Structure tests with POM:**
    - Create `tests/pages/LoginPage.ts`, `DashboardPage.ts`, `BillingPage.ts`.
    - Each exposes methods like `login(email, password)`, `goToBilling()`, `startUpgrade(plan)` etc.[^2][^6][^5][^1]
2. **Stable selectors:**
    - Add `data-testid` attributes to critical UI elements to keep tests robust.[^3][^4][^5][^1]
3. **Auth session fixture:**
    - Use Playwright’s authentication setup pattern to reuse a logged-in state across tests (e.g. a `setup` project that logs in once and saves storage).[^6][^5][^2]
4. **Billing test strategy:**
    - Use Stripe test mode.
    - Drive the full flow at least once:
        - Click “Upgrade”.
        - Complete Stripe test card form.
        - Assert subscription state changes in your app.
5. **CI-friendly config:**
    - Run headless by default, parallel across browsers only where useful.[^4][^5][^2][^3][^6]

***

## 2. Vitest for unit and component tests

Use Vitest for fast feedback on business logic and React components, especially around auth and billing state. Vitest is designed to integrate cleanly with Vite/React setups.[^7][^8][^9][^10]

**Setup:**

1. Install:
```bash
npm install -D vitest @testing-library/react @testing-library/jest-dom jsdom
```

2. Configure `vitest.config.ts`:
```ts
import { defineConfig } from 'vitest/config';
import react from '@vitejs/plugin-react';

export default defineConfig({
  plugins: [react()],
  test: {
    globals: true,
    environment: 'jsdom',
    setupFiles: './src/test/setup.ts',
    coverage: {
      reporter: ['text', 'html', 'json'],
      include: ['src/**/*.{ts,tsx}'],
      exclude: ['src/**/*.e2e.*'],
    },
  },
});
```

3. `src/test/setup.ts`:
```ts
import '@testing-library/jest-dom';
import { afterEach } from 'vitest';
import { cleanup } from '@testing-library/react';

afterEach(() => cleanup());
```

**Focus areas for >80% coverage:**

- **Auth domain logic**:
    - Token handling, role/tenant resolution, guards.
- **Billing domain logic**:
    - Plan checks, feature flags, limits, Stripe webhooks handler functions (business logic separated from HTTP as much as possible).
- **Key UI components**:
    - Login form, protected route wrapper, billing settings component.

***

## 3. MSW for API mocking

Use Mock Service Worker to mock your REST API at the **network level** in Vitest/component tests (and optionally Playwright in “mocked backend” mode). MSW intercepts HTTP calls without changing your fetch/axios code.[^11][^12][^13][^14][^15]

**Setup:**

1. Install:
```bash
npm install -D msw
```

2. Define handlers, e.g. `src/test/msw/handlers.ts`:
```ts
import { http, HttpResponse } from 'msw';

export const handlers = [
  http.post('/api/auth/login', () => {
    return HttpResponse.json({ token: 'test-token', user: { id: 'u1' } });
  }),
  http.get('/api/billing/plan', () => {
    return HttpResponse.json({ plan: 'pro', seats: 10 });
  }),
];
```

3. Node test server `src/test/msw/server.ts`:
```ts
import { setupServer } from 'msw/node';
import { handlers } from './handlers';

export const server = setupServer(...handlers);
```

4. Wire into `setup.ts` for Vitest:
```ts
import { server } from './msw/server';

beforeAll(() => server.listen());
afterEach(() => server.resetHandlers());
afterAll(() => server.close());
```

This lets your unit/integration tests run against predictable API responses without hitting the real backend.

***

## 4. Coverage strategy \& targets

Define explicit coverage focus:[^3][^4]

- **Auth**:
    - Unit tests for login logic, token storage, error handling.
    - Component tests for login form (valid/invalid credentials).
- **Billing**:
    - Unit tests for plan/limit logic and Stripe webhook processing.
    - Component tests for the billing settings UI, backed by MSW mocks.
- Use `vitest --coverage` in CI and set a minimum:

```json
"coverage": {
  "lines": 80,
  "functions": 80,
  "branches": 70,
  "statements": 80
}
```


***

## 5. Milestones

1. **W1 – Vitest + MSW baseline**
    - Vitest configured with jsdom and Testing Library.
    - MSW handlers for auth and billing.
    - Unit tests for core auth/billing logic with coverage turned on.
2. **W2 – Auth E2E with Playwright**
    - Page objects for login and dashboard.
    - E2E tests for login/logout and protected access.
3. **W3 – Billing E2E + coverage goal**
    - E2E upgrade/downgrade flow with Stripe test mode.
    - Component tests for billing UI.
    - Achieve >80% coverage in auth/billing areas.
4. **W4 – CI integration**
    - Separate jobs for `vitest` and `playwright`.
    - Artifacts: test reports, screenshots/videos for failing E2E tests.

On your current AIISTECH shared-server setup, these changes are all in the codebase and test pipeline; no additional infra beyond running Node tests is required.

Would you prefer to get Vitest+MSW unit coverage in place first, or wire up the high-value Playwright E2E auth/billing flows first?
<span style="display:none">[^16][^17][^18][^19]</span>

<div align="center">⁂</div>

[^1]: https://github.com/yuryalencar/demo-automated-testing-playwright

[^2]: https://github.com/microsoft/playwright/blob/main/docs/src/best-practices-js.md

[^3]: https://betterstack.com/community/guides/testing/playwright-best-practices/

[^4]: https://checklyhq.com/docs/learn/playwright/writing-tests

[^5]: https://playwright.dev/docs/best-practices

[^6]: https://autify.com/blog/playwright-best-practices

[^7]: https://github.com/rallets/vite-react-vitest

[^8]: https://gist.github.com/thiagobraddock/030d548c09869ef5087b7dcc28538f50

[^9]: https://www.freecodecamp.org/news/how-to-test-react-applications-with-vitest/

[^10]: https://stackoverflow.com/questions/77866970/how-does-one-include-a-node-module-dependency-in-a-vitest-test-for-a-react-compo

[^11]: https://github.com/facebook/create-react-app/issues/11250

[^12]: https://github.com/andreros/react-msw-example-app

[^13]: https://www.theodo.com/en-ma/blog/effortless-api-mocking-and-testing-with-mock-service-worker

[^14]: https://dev.to/mehakb7/mock-service-worker-msw-in-nextjs-a-guide-for-api-mocking-and-testing-e9m

[^15]: https://oneuptime.com/blog/post/2026-01-15-mock-api-calls-react-msw/view

[^16]: https://github.com/microsoft/playwright/issues/19452

[^17]: https://github.com/webdriverio/webdriverio/discussions/10170

[^18]: https://github.com/microsoft/playwright/issues/10114

[^19]: https://github.com/criesbeck/react-vitest

