write-e2e-cases

This skill acts as a specialized assistant for developers working on the Rsbuild project, facilitating the creation and maintenance of end-to-end (E2E) test cases. It is designed to ensure high-quality, consistent test coverage for new features, bug reproductions, and regression testing within the project's Playwright-based test suite. By following established project conventions, the agent helps developers maintain a stable build artifact and development experience.

• Automatically reviews uncommitted git changes to define the scope and target behavior for new test cases.

• Guides the implementation of tests according to the e2e/README.md conventions.

• Encourages the use of @e2e/helper methods (such as dev and build) to minimize code duplication and keep test suites concise.

• Structures test cases under e2e/cases with the required src directories and optional rsbuild.config.ts configurations.

• Validates changes by instructing the user to execute pnpm e2e to verify the test suite locally.

• Focuses on regression prevention by ensuring that bug fixes are coupled with corresponding E2E test cases.

• Requires developers to include a src directory in every test case to ensure proper test execution.

• Enforces a strict separation of concerns: if tests require source-code changes, the agent is constrained from changing the source directly, requiring user confirmation first.

• Provides a straightforward workflow for adding or updating test cases within the Rsbuild repository (https://github.com/web-infra-dev/rsbuild).

• Ensures that assertions are focused and readable, avoiding redundant setup and cleanup logic.