lnd.xprv/channeldb/kvdb/etcd/db_test.go

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// +build kvdb_etcd
package etcd
import (
"bytes"
"context"
"testing"
"github.com/btcsuite/btcwallet/walletdb"
"github.com/stretchr/testify/require"
)
func TestCopy(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(f.BackendConfig())
require.NoError(t, err)
err = db.Update(func(tx walletdb.ReadWriteTx) error {
// "apple"
apple, err := tx.CreateTopLevelBucket([]byte("apple"))
require.NoError(t, err)
require.NotNil(t, apple)
require.NoError(t, apple.Put([]byte("key"), []byte("val")))
return nil
})
// Expect non-zero copy.
var buf bytes.Buffer
require.NoError(t, db.Copy(&buf))
require.Greater(t, buf.Len(), 0)
require.Nil(t, err)
expected := map[string]string{
bkey("apple"): bval("apple"),
vkey("key", "apple"): "val",
}
require.Equal(t, expected, f.Dump())
}
func TestAbortContext(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
ctx, cancel := context.WithCancel(context.Background())
config := f.BackendConfig()
config.Ctx = ctx
// Pass abort context and abort right away.
db, err := newEtcdBackend(config)
require.NoError(t, err)
cancel()
// Expect that the update will fail.
err = db.Update(func(tx walletdb.ReadWriteTx) error {
_, err := tx.CreateTopLevelBucket([]byte("bucket"))
require.NoError(t, err)
return nil
})
require.Error(t, err, "context canceled")
// No changes in the DB.
require.Equal(t, map[string]string{}, f.Dump())
}