go/testutil/testutil_test.go

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////////

package testutil_test

import (
	"bytes"
	"testing"

	"github.com/google/tink/go/testutil"
	"github.com/google/tink/go/tink"
)

func TestDummyAead(t *testing.T) {
	// Assert that DummyAead implements the Aead interface.
	var _ tink.Aead = (*testutil.DummyAead)(nil)
}

func TestDummyMac(t *testing.T) {
	// Assert that DummyMac implements the Aead interface.
	var _ tink.Mac = (*testutil.DummyMac)(nil)
	// try to compute mac
	data := []byte{1, 2, 3, 4, 5}
	dummyMac := &testutil.DummyMac{Name: "Mac12347"}
	digest, err := dummyMac.ComputeMac(data)
	if err != nil {
		t.Errorf("unexpected error: %s", err)
	}
	if !bytes.Equal(append(data, dummyMac.Name...), digest) {
		t.Errorf("incorrect digest")
	}
	if valid, err := dummyMac.VerifyMac(nil, nil); !valid || err != nil {
		t.Errorf("unexpected result of VerifyMac")
	}
}