github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/store/nbs/mmap_table_reader_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  	"io/ioutil"
    26  	"os"
    27  	"path/filepath"
    28  	"testing"
    29  
    30  	"github.com/stretchr/testify/assert"
    31  	"github.com/stretchr/testify/require"
    32  )
    33  
    34  func TestMmapTableReader(t *testing.T) {
    35  	assert := assert.New(t)
    36  	dir, err := ioutil.TempDir("", "")
    37  	require.NoError(t, err)
    38  	defer os.RemoveAll(dir)
    39  
    40  	fc := newFDCache(1)
    41  	defer fc.Drop()
    42  
    43  	chunks := [][]byte{
    44  		[]byte("hello2"),
    45  		[]byte("goodbye2"),
    46  		[]byte("badbye2"),
    47  	}
    48  
    49  	tableData, h, err := buildTable(chunks)
    50  	require.NoError(t, err)
    51  	err = ioutil.WriteFile(filepath.Join(dir, h.String()), tableData, 0666)
    52  	require.NoError(t, err)
    53  
    54  	trc, err := newMmapTableReader(dir, h, uint32(len(chunks)), nil, fc)
    55  	require.NoError(t, err)
    56  	assertChunksInReader(chunks, trc, assert)
    57  }