github.com/dolthub/dolt/go@v0.40.5-0.20240520175717-68db7794bea6/store/nbs/file_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  	"context"
    26  	"os"
    27  	"path/filepath"
    28  	"testing"
    29  
    30  	"github.com/dolthub/dolt/go/libraries/utils/file"
    31  
    32  	"github.com/stretchr/testify/assert"
    33  	"github.com/stretchr/testify/require"
    34  )
    35  
    36  func TestMmapTableReader(t *testing.T) {
    37  	ctx := context.Background()
    38  	assert := assert.New(t)
    39  	dir, err := os.MkdirTemp("", "")
    40  	require.NoError(t, err)
    41  	defer file.RemoveAll(dir)
    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 = os.WriteFile(filepath.Join(dir, h.String()), tableData, 0666)
    52  	require.NoError(t, err)
    53  
    54  	trc, err := newFileTableReader(ctx, dir, h, uint32(len(chunks)), &UnlimitedQuotaProvider{})
    55  	require.NoError(t, err)
    56  	defer trc.close()
    57  	assertChunksInReader(chunks, trc, assert)
    58  }