for _, s := range []string{"TestType1", "TestType2", "TestType3", "ExternalInternalSame"} {
		if _, ok := types[s]; !ok {
			t.Errorf("missing type %q", s)
		}
	}
}

func TestAddKnownTypesIdemPotent(t *testing.T) {
	s := runtime.NewScheme()

	gv := schema.GroupVersion{Group: "foo", Version: "v1"}
	s.AddKnownTypes(gv, &runtimetesting.InternalSimple{})
	s.AddKnownTypes(gv, &runtimetesting.InternalSimple{})