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

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// +build kvdb_etcd
package etcd
import (
"context"
"testing"
"github.com/btcsuite/btcwallet/walletdb"
"github.com/stretchr/testify/require"
)
func TestTxManualCommit(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(context.TODO(), f.BackendConfig())
require.NoError(t, err)
tx, err := db.BeginReadWriteTx()
require.NoError(t, err)
require.NotNil(t, tx)
committed := false
tx.OnCommit(func() {
committed = true
})
apple, err := tx.CreateTopLevelBucket([]byte("apple"))
require.NoError(t, err)
require.NotNil(t, apple)
require.NoError(t, apple.Put([]byte("testKey"), []byte("testVal")))
banana, err := tx.CreateTopLevelBucket([]byte("banana"))
require.NoError(t, err)
require.NotNil(t, banana)
require.NoError(t, banana.Put([]byte("testKey"), []byte("testVal")))
require.NoError(t, tx.DeleteTopLevelBucket([]byte("banana")))
require.NoError(t, tx.Commit())
require.True(t, committed)
expected := map[string]string{
bkey("apple"): bval("apple"),
vkey("testKey", "apple"): "testVal",
}
require.Equal(t, expected, f.Dump())
}
func TestTxRollback(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(context.TODO(), f.BackendConfig())
require.NoError(t, err)
tx, err := db.BeginReadWriteTx()
require.Nil(t, err)
require.NotNil(t, tx)
apple, err := tx.CreateTopLevelBucket([]byte("apple"))
require.Nil(t, err)
require.NotNil(t, apple)
require.NoError(t, apple.Put([]byte("testKey"), []byte("testVal")))
require.NoError(t, tx.Rollback())
require.Error(t, walletdb.ErrTxClosed, tx.Commit())
require.Equal(t, map[string]string{}, f.Dump())
}
func TestChangeDuringManualTx(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(context.TODO(), f.BackendConfig())
require.NoError(t, err)
tx, err := db.BeginReadWriteTx()
require.Nil(t, err)
require.NotNil(t, tx)
apple, err := tx.CreateTopLevelBucket([]byte("apple"))
require.Nil(t, err)
require.NotNil(t, apple)
require.NoError(t, apple.Put([]byte("testKey"), []byte("testVal")))
// Try overwriting the bucket key.
f.Put(bkey("apple"), "banana")
// TODO: translate error
require.NotNil(t, tx.Commit())
require.Equal(t, map[string]string{
bkey("apple"): "banana",
}, f.Dump())
}
func TestChangeDuringUpdate(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(context.TODO(), f.BackendConfig())
require.NoError(t, err)
count := 0
err = db.Update(func(tx walletdb.ReadWriteTx) error {
apple, err := tx.CreateTopLevelBucket([]byte("apple"))
require.NoError(t, err)
require.NotNil(t, apple)
require.NoError(t, apple.Put([]byte("key"), []byte("value")))
if count == 0 {
f.Put(vkey("key", "apple"), "new_value")
f.Put(vkey("key2", "apple"), "value2")
}
cursor := apple.ReadCursor()
k, v := cursor.First()
require.Equal(t, []byte("key"), k)
require.Equal(t, []byte("value"), v)
require.Equal(t, v, apple.Get([]byte("key")))
k, v = cursor.Next()
if count == 0 {
require.Nil(t, k)
require.Nil(t, v)
} else {
require.Equal(t, []byte("key2"), k)
require.Equal(t, []byte("value2"), v)
}
count++
return nil
}, func() {})
require.Nil(t, err)
require.Equal(t, count, 2)
expected := map[string]string{
bkey("apple"): bval("apple"),
vkey("key", "apple"): "value",
vkey("key2", "apple"): "value2",
}
require.Equal(t, expected, f.Dump())
}