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backup_test.go
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backup_test.go
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/*
* Copyright 2017 Dgraph Labs, Inc. and Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package badger
import (
"io/ioutil"
"os"
"testing"
"github.com/stretchr/testify/require"
)
func TestDumpLoad(t *testing.T) {
dir, err := ioutil.TempDir("", "badger")
require.NoError(t, err)
defer os.RemoveAll(dir)
db, err := Open(getTestOptions(dir))
require.NoError(t, err)
// Write some stuff
entries := []struct {
key []byte
val []byte
userMeta byte
version uint64
}{
{key: []byte("answer1"), val: []byte("42"), version: 1},
{key: []byte("answer2"), val: []byte("43"), userMeta: 1, version: 1},
}
err = db.Update(func(txn *Txn) error {
for _, e := range entries {
err := txn.Set(e.key, e.val, e.userMeta)
if err != nil {
return err
}
}
return nil
})
require.NoError(t, err)
bak, err := ioutil.TempFile(dir, "badgerbak")
require.NoError(t, err)
ts, err := db.Backup(bak, 0)
t.Logf("New ts: %d\n", ts)
require.NoError(t, err)
require.NoError(t, bak.Close())
require.NoError(t, db.Close())
db, err = Open(getTestOptions(dir))
defer db.Close()
bak, err = os.Open(bak.Name())
defer bak.Close()
require.NoError(t, db.Load(bak))
err = db.View(func(txn *Txn) error {
opts := DefaultIteratorOptions
opts.AllVersions = true
it := txn.NewIterator(opts)
var count int
for it.Rewind(); it.Valid(); it.Next() {
item := it.Item()
val, err := item.Value()
if err != nil {
return err
}
require.Equal(t, entries[count].key, item.Key())
require.Equal(t, entries[count].val, val)
require.Equal(t, entries[count].version, item.Version())
require.Equal(t, entries[count].userMeta, item.UserMeta())
count++
}
return nil
})
require.NoError(t, err)
}