kubernetes/staging/src/k8s.io/apiserver/pkg/admission/testing/helpers.go

// WithReinvocationTesting wraps a mutating admission handler and reinvokes it each time Admit is
// called. It checks the admission output object and reports a test error if the admission handler
// performs non-idempotent mutatations to the object.
func WithReinvocationTesting(t *testing.T, admission admission.MutationInterface) admission.MutationInterface { … }

type reinvoker …

// Admit reinvokes the admission handler and reports a test error if the admission handler performs
// non-idempotent mutatations to the admission object.
func (r *reinvoker) Admit(ctx context.Context, a admission.Attributes, o admission.ObjectInterfaces) error { … }

// Handles will return true if any of the admission andler handlers handle the given operation.
func (r *reinvoker) Handles(operation admission.Operation) bool { … }