testcontext

func AttachDecorator ¶

func AttachDecorator[K comparable](tb testing.TB, key K, decorator func(context.Context) context.Context)

AttachDecorator applies decorator to the test-scoped context once for key. Reusing the same key is a no-op. If the test context does not exist yet, AttachDecorator creates it with the default timeout. Call For with WithTimeout first when using a custom timeout.

func DefaultTimeout ¶

func DefaultTimeout() time.Duration

DefaultTimeout returns the effective default timeout for test-scoped contexts.

func For ¶

func For(tb testing.TB, opts ...Option) context.Context

For returns the test-scoped context for tb. The context is canceled when the test ends or when the configured test timeout expires.

The first call creates the per-test context and fixes its timeout. Later calls return the same context, but an explicit different timeout fails instead of being silently ignored.