github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/store/nbs/persisting_chunk_source_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 nbs 23 24 import ( 25 "context" 26 "testing" 27 28 "github.com/stretchr/testify/assert" 29 "github.com/stretchr/testify/require" 30 ) 31 32 func TestPersistingChunkStoreEmpty(t *testing.T) { 33 mt := newMemTable(testMemTableSize) 34 ccs := newPersistingChunkSource(context.Background(), mt, nil, newFakeTablePersister(), make(chan struct{}, 1), &Stats{}) 35 36 h, err := ccs.hash() 37 require.NoError(t, err) 38 assert.Equal(t, addr{}, h) 39 assert.Zero(t, mustUint32(ccs.count())) 40 } 41 42 type pausingFakeTablePersister struct { 43 tablePersister 44 trigger <-chan struct{} 45 } 46 47 func (ftp pausingFakeTablePersister) Persist(ctx context.Context, mt *memTable, haver chunkReader, stats *Stats) (chunkSource, error) { 48 <-ftp.trigger 49 return ftp.tablePersister.Persist(context.Background(), mt, haver, stats) 50 } 51 52 func TestPersistingChunkStore(t *testing.T) { 53 assert := assert.New(t) 54 mt := newMemTable(testMemTableSize) 55 56 for _, c := range testChunks { 57 assert.True(mt.addChunk(computeAddr(c), c)) 58 } 59 60 trigger := make(chan struct{}) 61 ccs := newPersistingChunkSource(context.Background(), mt, nil, pausingFakeTablePersister{newFakeTablePersister(), trigger}, make(chan struct{}, 1), &Stats{}) 62 63 assertChunksInReader(testChunks, ccs, assert) 64 assert.EqualValues(mustUint32(mt.count()), mustUint32(ccs.getReader().count())) 65 close(trigger) 66 67 h, err := ccs.hash() 68 assert.NoError(err) 69 assert.NotEqual(addr{}, h) 70 assert.EqualValues(len(testChunks), mustUint32(ccs.count())) 71 assertChunksInReader(testChunks, ccs, assert) 72 73 assert.Nil(ccs.mt) 74 75 newChunk := []byte("additional") 76 mt.addChunk(computeAddr(newChunk), newChunk) 77 assert.NotEqual(mustUint32(mt.count()), mustUint32(ccs.count())) 78 assert.False(ccs.has(computeAddr(newChunk))) 79 }