kubernetes/test/utils/ktesting/contexthelper.go

// cleanupErr creates a cause when canceling a context because the test has completed.
// It is a context.Canceled error.
func cleanupErr(testName string) error { … }

type canceledError …

func (c canceledError) Error() string { … }

func (c canceledError) Is(target error) bool { … }

// withTimeout corresponds to [context.WithTimeout]. In contrast to
// [context.WithTimeout], it automatically cancels during test cleanup, provides
// the given cause when the deadline is reached, and its cancel function
// requires a cause.
func withTimeout(ctx context.Context, tb TB, timeout time.Duration, timeoutCause string) (context.Context, func(cause string)) { … }

type deadlineContext …

func (d deadlineContext) Deadline() (time.Time, bool) { … }