github.com/dolthub/dolt/go@v0.40.5-0.20240520175717-68db7794bea6/store/hash/hash_slice_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  	"sort"
    26  	"testing"
    27  
    28  	"github.com/stretchr/testify/assert"
    29  )
    30  
    31  func TestHashSliceSort(t *testing.T) {
    32  	assert := assert.New(t)
    33  
    34  	rs := HashSlice{}
    35  	for i := 1; i <= 3; i++ {
    36  		for j := 1; j <= 3; j++ {
    37  			h := Hash{}
    38  			for k := 1; k <= j; k++ {
    39  				h[k-1] = byte(i)
    40  			}
    41  			rs = append(rs, h)
    42  		}
    43  	}
    44  
    45  	rs2 := HashSlice(make([]Hash, len(rs)))
    46  	copy(rs2, rs)
    47  	sort.Sort(sort.Reverse(rs2))
    48  	assert.False(rs.Equals(rs2))
    49  
    50  	sort.Sort(rs2)
    51  	assert.True(rs.Equals(rs2))
    52  }