API Testing Patterns

Apply these patterns when seeding test data via API, asserting on real API responses without mocking, or building reusable HTTP wrappers for tests.

The Resource Class Pattern

Wrap each backend resource in a class. The folder structure mirrors the backend's REST namespace, so api/CRM/Users/... endpoints live in api/crm/users/users-resource.ts. Each class extends BasePage to inherit the same page.request context and credentials.

// api/crm/users/users-resource.ts
import { APIResponse, expect } from '@playwright/test';
import { BasePage } from '@POM/base-page';