github.com/KinWaiYuen/client-go/v2@v2.5.4/kv/key_test.go (about)

     1  // Copyright 2021 TiKV Authors
     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  // NOTE: The code in this file is based on code from the
    16  // TiDB project, licensed under the Apache License v 2.0
    17  //
    18  // https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/kv/key.go
    19  //
    20  
    21  // Copyright 2021 PingCAP, Inc.
    22  //
    23  // Licensed under the Apache License, Version 2.0 (the "License");
    24  // you may not use this file except in compliance with the License.
    25  // You may obtain a copy of the License at
    26  //
    27  //     http://www.apache.org/licenses/LICENSE-2.0
    28  //
    29  // Unless required by applicable law or agreed to in writing, software
    30  // distributed under the License is distributed on an "AS IS" BASIS,
    31  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    32  // See the License for the specific language governing permissions and
    33  // limitations under the License.
    34  
    35  package kv
    36  
    37  import (
    38  	"testing"
    39  
    40  	"github.com/stretchr/testify/assert"
    41  )
    42  
    43  func TestPrefixNextKey(t *testing.T) {
    44  	k1 := []byte{0xff}
    45  	k2 := []byte{0xff, 0xff}
    46  	k3 := []byte{0xff, 0xff, 0xff, 0xff}
    47  
    48  	pk1 := PrefixNextKey(k1)
    49  	pk2 := PrefixNextKey(k2)
    50  	pk3 := PrefixNextKey(k3)
    51  	assert.Equal(t, []byte(""), pk1)
    52  	assert.Equal(t, []byte(""), pk2)
    53  	assert.Equal(t, []byte(""), pk3)
    54  }