github.com/KinWaiYuen/client-go/v2@v2.5.4/internal/unionstore/union_store_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/unionstore/union_store_test.go
    19  //
    20  
    21  // Copyright 2015 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 unionstore
    36  
    37  import (
    38  	"context"
    39  	"testing"
    40  
    41  	tikverr "github.com/KinWaiYuen/client-go/v2/error"
    42  	"github.com/stretchr/testify/assert"
    43  )
    44  
    45  func TestUnionStoreGetSet(t *testing.T) {
    46  	assert := assert.New(t)
    47  	store := newMemDB()
    48  	us := NewUnionStore(&mockSnapshot{store})
    49  
    50  	err := store.Set([]byte("1"), []byte("1"))
    51  	assert.Nil(err)
    52  	v, err := us.Get(context.TODO(), []byte("1"))
    53  	assert.Nil(err)
    54  	assert.Equal(v, []byte("1"))
    55  	err = us.GetMemBuffer().Set([]byte("1"), []byte("2"))
    56  	assert.Nil(err)
    57  	v, err = us.Get(context.TODO(), []byte("1"))
    58  	assert.Nil(err)
    59  	assert.Equal(v, []byte("2"))
    60  	assert.Equal(us.GetMemBuffer().Size(), 2)
    61  	assert.Equal(us.GetMemBuffer().Len(), 1)
    62  }
    63  
    64  func TestUnionStoreDelete(t *testing.T) {
    65  	assert := assert.New(t)
    66  	store := newMemDB()
    67  	us := NewUnionStore(&mockSnapshot{store})
    68  
    69  	err := store.Set([]byte("1"), []byte("1"))
    70  	assert.Nil(err)
    71  	err = us.GetMemBuffer().Delete([]byte("1"))
    72  	assert.Nil(err)
    73  	_, err = us.Get(context.TODO(), []byte("1"))
    74  	assert.True(tikverr.IsErrNotFound(err))
    75  
    76  	err = us.GetMemBuffer().Set([]byte("1"), []byte("2"))
    77  	assert.Nil(err)
    78  	v, err := us.Get(context.TODO(), []byte("1"))
    79  	assert.Nil(err)
    80  	assert.Equal(v, []byte("2"))
    81  }
    82  
    83  func TestUnionStoreSeek(t *testing.T) {
    84  	assert := assert.New(t)
    85  	store := newMemDB()
    86  	us := NewUnionStore(&mockSnapshot{store})
    87  
    88  	err := store.Set([]byte("1"), []byte("1"))
    89  	assert.Nil(err)
    90  	err = store.Set([]byte("2"), []byte("2"))
    91  	assert.Nil(err)
    92  	err = store.Set([]byte("3"), []byte("3"))
    93  	assert.Nil(err)
    94  
    95  	iter, err := us.Iter(nil, nil)
    96  	assert.Nil(err)
    97  	checkIterator(t, iter, [][]byte{[]byte("1"), []byte("2"), []byte("3")}, [][]byte{[]byte("1"), []byte("2"), []byte("3")})
    98  
    99  	iter, err = us.Iter([]byte("2"), nil)
   100  	assert.Nil(err)
   101  	checkIterator(t, iter, [][]byte{[]byte("2"), []byte("3")}, [][]byte{[]byte("2"), []byte("3")})
   102  
   103  	err = us.GetMemBuffer().Set([]byte("4"), []byte("4"))
   104  	assert.Nil(err)
   105  	iter, err = us.Iter([]byte("2"), nil)
   106  	assert.Nil(err)
   107  	checkIterator(t, iter, [][]byte{[]byte("2"), []byte("3"), []byte("4")}, [][]byte{[]byte("2"), []byte("3"), []byte("4")})
   108  
   109  	err = us.GetMemBuffer().Delete([]byte("3"))
   110  	assert.Nil(err)
   111  	iter, err = us.Iter([]byte("2"), nil)
   112  	assert.Nil(err)
   113  	checkIterator(t, iter, [][]byte{[]byte("2"), []byte("4")}, [][]byte{[]byte("2"), []byte("4")})
   114  }
   115  
   116  func TestUnionStoreIterReverse(t *testing.T) {
   117  	assert := assert.New(t)
   118  	store := newMemDB()
   119  	us := NewUnionStore(&mockSnapshot{store})
   120  
   121  	err := store.Set([]byte("1"), []byte("1"))
   122  	assert.Nil(err)
   123  	err = store.Set([]byte("2"), []byte("2"))
   124  	assert.Nil(err)
   125  	err = store.Set([]byte("3"), []byte("3"))
   126  	assert.Nil(err)
   127  
   128  	iter, err := us.IterReverse(nil)
   129  	assert.Nil(err)
   130  	checkIterator(t, iter, [][]byte{[]byte("3"), []byte("2"), []byte("1")}, [][]byte{[]byte("3"), []byte("2"), []byte("1")})
   131  
   132  	iter, err = us.IterReverse([]byte("3"))
   133  	assert.Nil(err)
   134  	checkIterator(t, iter, [][]byte{[]byte("2"), []byte("1")}, [][]byte{[]byte("2"), []byte("1")})
   135  
   136  	err = us.GetMemBuffer().Set([]byte("0"), []byte("0"))
   137  	assert.Nil(err)
   138  	iter, err = us.IterReverse([]byte("3"))
   139  	assert.Nil(err)
   140  	checkIterator(t, iter, [][]byte{[]byte("2"), []byte("1"), []byte("0")}, [][]byte{[]byte("2"), []byte("1"), []byte("0")})
   141  
   142  	err = us.GetMemBuffer().Delete([]byte("1"))
   143  	assert.Nil(err)
   144  	iter, err = us.IterReverse([]byte("3"))
   145  	assert.Nil(err)
   146  	checkIterator(t, iter, [][]byte{[]byte("2"), []byte("0")}, [][]byte{[]byte("2"), []byte("0")})
   147  }
   148  
   149  func checkIterator(t *testing.T, iter Iterator, keys [][]byte, values [][]byte) {
   150  	assert := assert.New(t)
   151  	defer iter.Close()
   152  	assert.Equal(len(keys), len(values))
   153  	for i, k := range keys {
   154  		v := values[i]
   155  		assert.True(iter.Valid())
   156  		assert.Equal(iter.Key(), k)
   157  		assert.Equal(iter.Value(), v)
   158  		assert.Nil(iter.Next())
   159  	}
   160  	assert.False(iter.Valid())
   161  }