github.com/MetalBlockchain/metalgo@v1.11.9/database/pebbledb/batch_test.go (about)

     1  // Copyright (C) 2019-2024, Ava Labs, Inc. All rights reserved.
     2  // See the file LICENSE for licensing terms.
     3  
     4  package pebbledb
     5  
     6  import (
     7  	"testing"
     8  
     9  	"github.com/prometheus/client_golang/prometheus"
    10  	"github.com/stretchr/testify/require"
    11  
    12  	"github.com/MetalBlockchain/metalgo/utils/logging"
    13  )
    14  
    15  // Note: TestInterface tests other batch functionality.
    16  func TestBatch(t *testing.T) {
    17  	require := require.New(t)
    18  	dirName := t.TempDir()
    19  
    20  	db, err := New(dirName, nil, logging.NoLog{}, prometheus.NewRegistry())
    21  	require.NoError(err)
    22  
    23  	batchIntf := db.NewBatch()
    24  	batch, ok := batchIntf.(*batch)
    25  	require.True(ok)
    26  
    27  	require.False(batch.written)
    28  
    29  	key1, value1 := []byte("key1"), []byte("value1")
    30  	require.NoError(batch.Put(key1, value1))
    31  	require.Equal(len(key1)+len(value1)+pebbleByteOverHead, batch.Size())
    32  
    33  	require.NoError(batch.Write())
    34  
    35  	require.True(batch.written)
    36  
    37  	got, err := db.Get(key1)
    38  	require.NoError(err)
    39  	require.Equal(value1, got)
    40  
    41  	batch.Reset()
    42  	require.False(batch.written)
    43  	require.Zero(batch.Size())
    44  
    45  	require.NoError(db.Close())
    46  }