/testing--test-e2e

Generates tests for boundaries, nulls, concurrency, Unicode and state in your code, explaining which bug each one would catch.

Runs your test suite, works out whether each failure is in the test, the code or the environment, fixes it and re-runs to confirm.

Reads a file and writes unit tests covering normal use, edge cases and errors in your existing framework, then runs them to check they pass.

Generates integration tests that exercise real interactions between components, APIs and databases, including partial failures and retries.

Creates mocks, stubs, spies, fakes and realistic fixture data for your code's dependencies, following Jest, Vitest, pytest or Go conventions.

Sets up screenshot comparison against approved baselines to catch unintended UI changes, with CI integration and flakiness control.