How to Build Robust Applications with Cursor AI + Playwright



AI Summary

Summary of Video Transcript

Importance of Testing with AI

  • Working with larger codebases can introduce bugs that are hard to detect without proper testing.
  • Testing ensures robust code as development pace increases.
  • AI can be leveraged to generate tests, combining efficiency with robustness.

Types of Testing

  • Three main types: unit, integration, and end-to-end (E2E) tests.
  • For small teams and early project stages, E2E tests are recommended.
  • E2E tests encourage user perspective thinking and simpler user journeys.

Playwright Test Framework

  • Playwright by Microsoft is used for writing E2E tests.
  • Works across major languages and is simple to maintain.
  • Test structure: navigate, take action, check results.

Code Example

  • Demonstrates a test for a podcast transcript editing tool.
  • Test checks if the transcript listing page shows podcast episodes correctly.
  • Running tests is straightforward using the command npx playwright test --ui.

AI-Generated Tests with Cursor

  • Cursor Composer’s notepad feature is used to generate tests.
  • AI uses documentation and best practices to improve test guidelines.
  • AI can implement features and corresponding tests simultaneously.

Implementing Features with AI

  • AI can handle complex features involving third-party APIs and frontend changes.
  • AI-generated tests can be run to ensure feature functionality.
  • Authentication and user-specific tests are also covered.

Playwright’s User Account Management for Testing

  • Playwright can save and load browser storage states for tests requiring login.

Conclusion

  • AI-generated tests can significantly improve development efficiency.
  • E2E tests complement but do not replace unit and integration tests.
  • A combination of test types is necessary for robust applications.

Detailed Instructions and URLs

  • No specific CLI commands, website URLs, or detailed instructions were provided in the transcript.