github.com/uber/kraken@v0.1.4/core/digester_test.go (about)

     1  // Copyright (c) 2016-2019 Uber Technologies, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package core
    15  
    16  import (
    17  	"bytes"
    18  	"io"
    19  	"io/ioutil"
    20  	"strings"
    21  	"testing"
    22  
    23  	"github.com/stretchr/testify/require"
    24  )
    25  
    26  const (
    27  	_testStr     = "test"
    28  	_expectedHex = "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"
    29  )
    30  
    31  func TestNewDigester(t *testing.T) {
    32  	require := require.New(t)
    33  
    34  	d := NewDigester()
    35  
    36  	hexDigest := d.Digest().Hex()
    37  	require.NoError(ValidateSHA256(hexDigest))
    38  }
    39  
    40  func TestFromBytes(t *testing.T) {
    41  	require := require.New(t)
    42  
    43  	d := NewDigester()
    44  	d.FromBytes([]byte(_testStr))
    45  
    46  	hexDigest := d.Digest().Hex()
    47  	require.NoError(ValidateSHA256(hexDigest))
    48  	require.Equal(_expectedHex, hexDigest)
    49  }
    50  
    51  func TestFromReader(t *testing.T) {
    52  	require := require.New(t)
    53  
    54  	d := NewDigester()
    55  	r := strings.NewReader(_testStr)
    56  	d.FromReader(r)
    57  
    58  	hexDigest := d.Digest().Hex()
    59  	require.NoError(ValidateSHA256(hexDigest))
    60  	require.Equal(_expectedHex, hexDigest)
    61  }
    62  
    63  func TestTeeReader(t *testing.T) {
    64  	require := require.New(t)
    65  
    66  	d := NewDigester()
    67  
    68  	r := bytes.NewBufferString(_testStr)
    69  	w := &bytes.Buffer{}
    70  	tr := d.Tee(r)
    71  
    72  	_, err := io.Copy(w, tr)
    73  	require.NoError(err)
    74  	b, err := ioutil.ReadAll(w)
    75  	require.NoError(err)
    76  	require.Equal(_testStr, string(b))
    77  
    78  	hexDigest := d.Digest().Hex()
    79  	require.NoError(ValidateSHA256(hexDigest))
    80  	require.Equal(_expectedHex, hexDigest)
    81  }