Designing a resilient test harness for concurrent, stateful E2E scenarios in Playwright

说明与用途

使用每个工作进程的独立 Docker 容器和 API 驱动的 fixture 构建了一个弹性 Playwright 测试框架，消除了因共享后端状态导致的测试不稳定。

问题

Running concurrent, stateful E2E tests causes flaky failures due to shared backend resources; browser context isolation alone is insufficient.

结果

Implemented per-worker isolated backend environments with API-driven state provisioning and robust cleanup, eliminating flaky tests and improving CI/CD reliability.

工作流

• Spin up a fresh Docker Compose/Testcontainers stack per Playwright worker using globalSetup.
• Map unique ports and database instances for each environment.
• Use custom Playwright fixtures to create a unique user and provision complex state via direct API calls before UI interaction.
• Ensure fixture logic is idempotent.
• Run tests against the isolated environment.
• After each test, perform test-specific cleanup with test.afterEach (e.g., logout, delete temp files).
• After all tests, invoke globalTeardown to stop and remove containers, guaranteeing cleanup even on failures.

证据

Leverage dynamic, containerized environments for true isolation.

来源

Use custom Playwright fixtures to provision specific states before UI interaction via direct API or database calls.

来源