lotus/lib/backupds/backupds_test.go

86 lines
1.9 KiB
Go
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2021-03-12 15:19:43 +00:00
package backupds
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"testing"
"github.com/ipfs/go-datastore"
"github.com/stretchr/testify/require"
)
const valSize = 512 << 10
func putVals(t *testing.T, ds datastore.Datastore, start, end int) {
for i := start; i < end; i++ {
err := ds.Put(datastore.NewKey(fmt.Sprintf("%d", i)), []byte(fmt.Sprintf("%d-%s", i, strings.Repeat("~", valSize))))
require.NoError(t, err)
}
}
func checkVals(t *testing.T, ds datastore.Datastore, start, end int, exist bool) {
for i := start; i < end; i++ {
v, err := ds.Get(datastore.NewKey(fmt.Sprintf("%d", i)))
if exist {
require.NoError(t, err)
expect := []byte(fmt.Sprintf("%d-%s", i, strings.Repeat("~", valSize)))
require.EqualValues(t, expect, v)
} else {
require.ErrorIs(t, err, datastore.ErrNotFound)
}
}
}
func TestNoLogRestore(t *testing.T) {
ds1 := datastore.NewMapDatastore()
putVals(t, ds1, 0, 10)
bds, err := Wrap(ds1, NoLogdir)
require.NoError(t, err)
var bup bytes.Buffer
require.NoError(t, bds.Backup(&bup))
putVals(t, ds1, 10, 20)
ds2 := datastore.NewMapDatastore()
require.NoError(t, RestoreInto(&bup, ds2))
checkVals(t, ds2, 0, 10, true)
checkVals(t, ds2, 10, 20, false)
}
func TestLogRestore(t *testing.T) {
logdir, err := ioutil.TempDir("", "backupds-test-")
require.NoError(t, err)
defer os.RemoveAll(logdir) // nolint
ds1 := datastore.NewMapDatastore()
putVals(t, ds1, 0, 10)
bds, err := Wrap(ds1, logdir)
require.NoError(t, err)
putVals(t, bds, 10, 20)
require.NoError(t, bds.Close())
fls, err := ioutil.ReadDir(logdir)
require.NoError(t, err)
require.Equal(t, 1, len(fls))
bf, err := ioutil.ReadFile(filepath.Join(logdir, fls[0].Name()))
require.NoError(t, err)
ds2 := datastore.NewMapDatastore()
require.NoError(t, RestoreInto(bytes.NewReader(bf), ds2))
checkVals(t, ds2, 0, 20, true)
}