github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/store/hash/hash_test.go (about)

     1  // Copyright 2019 Dolthub, 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  //
    15  // This file incorporates work covered by the following copyright and
    16  // permission notice:
    17  //
    18  // Copyright 2016 Attic Labs, Inc. All rights reserved.
    19  // Licensed under the Apache License, version 2.0:
    20  // http://www.apache.org/licenses/LICENSE-2.0
    21  
    22  package hash
    23  
    24  import (
    25  	"testing"
    26  
    27  	"github.com/stretchr/testify/assert"
    28  )
    29  
    30  func TestParseError(t *testing.T) {
    31  	assert := assert.New(t)
    32  
    33  	assertParseError := func(s string) {
    34  		assert.Panics(func() {
    35  			Parse(s)
    36  		})
    37  	}
    38  
    39  	assertParseError("foo")
    40  
    41  	// too few digits
    42  	assertParseError("0000000000000000000000000000000")
    43  
    44  	// too many digits
    45  	assertParseError("000000000000000000000000000000000")
    46  
    47  	// 'w' not valid base32
    48  	assertParseError("00000000000000000000000000000000w")
    49  
    50  	// no prefix
    51  	assertParseError("sha1-00000000000000000000000000000000")
    52  	assertParseError("sha2-00000000000000000000000000000000")
    53  
    54  	r := Parse("00000000000000000000000000000000")
    55  	assert.NotNil(r)
    56  }
    57  
    58  func TestMaybeParse(t *testing.T) {
    59  	assert := assert.New(t)
    60  
    61  	parse := func(s string, success bool) {
    62  		r, ok := MaybeParse(s)
    63  		assert.Equal(success, ok, "Expected success=%t for %s", success, s)
    64  		if ok {
    65  			assert.Equal(s, r.String())
    66  		} else {
    67  			assert.Equal(emptyHash, r)
    68  		}
    69  	}
    70  
    71  	parse("00000000000000000000000000000000", true)
    72  	parse("00000000000000000000000000000001", true)
    73  	parse("", false)
    74  	parse("adsfasdf", false)
    75  	parse("sha2-00000000000000000000000000000000", false)
    76  	parse("0000000000000000000000000000000w", false)
    77  }
    78  
    79  func TestEquals(t *testing.T) {
    80  	assert := assert.New(t)
    81  
    82  	r0 := Parse("00000000000000000000000000000000")
    83  	r01 := Parse("00000000000000000000000000000000")
    84  	r1 := Parse("00000000000000000000000000000001")
    85  
    86  	assert.Equal(r0, r01)
    87  	assert.Equal(r01, r0)
    88  	assert.NotEqual(r0, r1)
    89  	assert.NotEqual(r1, r0)
    90  }
    91  
    92  func TestString(t *testing.T) {
    93  	s := "0123456789abcdefghijklmnopqrstuv"
    94  	r := Parse(s)
    95  	assert.Equal(t, s, r.String())
    96  }
    97  
    98  func TestOf(t *testing.T) {
    99  	r := Of([]byte("abc"))
   100  	assert.Equal(t, "rmnjb8cjc5tblj21ed4qs821649eduie", r.String())
   101  }
   102  
   103  func TestIsEmpty(t *testing.T) {
   104  	r1 := Hash{}
   105  	assert.True(t, r1.IsEmpty())
   106  
   107  	r2 := Parse("00000000000000000000000000000000")
   108  	assert.True(t, r2.IsEmpty())
   109  
   110  	r3 := Parse("rmnjb8cjc5tblj21ed4qs821649eduie")
   111  	assert.False(t, r3.IsEmpty())
   112  }
   113  
   114  func TestLess(t *testing.T) {
   115  	assert := assert.New(t)
   116  
   117  	r1 := Parse("00000000000000000000000000000001")
   118  	r2 := Parse("00000000000000000000000000000002")
   119  
   120  	assert.False(r1.Less(r1))
   121  	assert.True(r1.Less(r2))
   122  	assert.False(r2.Less(r1))
   123  	assert.False(r2.Less(r2))
   124  
   125  	r0 := Hash{}
   126  	assert.False(r0.Less(r0))
   127  	assert.True(r0.Less(r2))
   128  	assert.False(r2.Less(r0))
   129  }
   130  
   131  func TestGreater(t *testing.T) {
   132  	assert := assert.New(t)
   133  
   134  	r1 := Parse("00000000000000000000000000000001")
   135  	r2 := Parse("00000000000000000000000000000002")
   136  
   137  	assert.False(r1.Greater(r1))
   138  	assert.False(r1.Greater(r2))
   139  	assert.True(r2.Greater(r1))
   140  	assert.False(r2.Greater(r2))
   141  
   142  	r0 := Hash{}
   143  	assert.False(r0.Greater(r0))
   144  	assert.False(r0.Greater(r2))
   145  	assert.True(r2.Greater(r0))
   146  }