1 /* 2 * Copyright © 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io> 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 * 16 * @author Aeneas Rekkas <aeneas+oss@aeneas.io> 17 * @copyright 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io> 18 * @license Apache-2.0 19 * 20 */ 21 22 package hmac 23 24 import ( 25 "testing" 26 27 "github.com/stretchr/testify/assert" 28 ) 29 30 func TestRandomBytes(t *testing.T) { 31 bytes, err := RandomBytes(128) 32 assert.NoError(t, err) 33 assert.Len(t, bytes, 128) 34 } 35 36 func TestPseudoRandomness(t *testing.T) { 37 runs := 65536 38 results := map[string]bool{} 39 for i := 0; i < runs; i++ { 40 bytes, err := RandomBytes(128) 41 assert.NoError(t, err) 42 43 _, ok := results[string(bytes)] 44 assert.False(t, ok) 45 results[string(bytes)] = true 46 } 47 } 48