github.com/vescale/zgraph@v0.0.0-20230410094002-959c02d50f95/storage/kv/key_test.go (about)

     1  // Copyright 2022 zGraph Authors. All rights reserved.
     2  //
     3  // Copyright 2021 PingCAP, Inc.
     4  //
     5  // Licensed under the Apache License, Version 2.0 (the "License");
     6  // you may not use this file except in compliance with the License.
     7  // You may obtain a copy of the License at
     8  //
     9  //     http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing, software
    12  // distributed under the License is distributed on an "AS IS" BASIS,
    13  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14  // See the License for the specific language governing permissions and
    15  // limitations under the License.
    16  
    17  package kv
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/stretchr/testify/assert"
    23  )
    24  
    25  func TestPrefixNextKey(t *testing.T) {
    26  	k1 := []byte{0xff}
    27  	k2 := []byte{0xff, 0xff}
    28  	k3 := []byte{0xff, 0xff, 0xff, 0xff}
    29  
    30  	pk1 := PrefixNextKey(k1)
    31  	pk2 := PrefixNextKey(k2)
    32  	pk3 := PrefixNextKey(k3)
    33  	assert.Equal(t, []byte(""), pk1)
    34  	assert.Equal(t, []byte(""), pk2)
    35  	assert.Equal(t, []byte(""), pk3)
    36  }