unit tests db created without bloom and after added bloom filter

Author: miiu96

leveldb/leveldbSerial_test.go

@@ -20,6 +20,38 @@ func createSerialLevelDb(tb testing.TB, batchDelaySeconds int, maxBatchSize int,
 	return lvdb
 }
 
+func TestLevelDBWithoutBloomAndLateWithBloomFilter(t *testing.T) {
+	t.Parallel()
+
+	tmp := t.TempDir()
+
+	lvdb, err := leveldb.NewSerialDB(tmp, 10, 1, 10, 0)
+	require.Nil(t, err)
+
+	key, val := []byte("key"), []byte("value")
+	err = lvdb.Put(key, val)
+	require.Nil(t, err)
+
+	err = lvdb.Close()
+	require.Nil(t, err)
+
+	res, err := lvdb.Get(key)
+	require.Nil(t, res)
+	require.Equal(t, common.ErrDBIsClosed, err)
+
+	lvdb, err = leveldb.NewSerialDB(tmp, 10, 1, 10, 10)
+	require.Nil(t, err)
+
+	// Put should work
+	err = lvdb.Put([]byte("new-key"), val)
+	require.Nil(t, err)
+
+	// Get should work
+	res, err = lvdb.Get(key)
+	require.Nil(t, err)
+	require.Equal(t, val, res)
+}
+
 func TestSerialDB_PutNoError(t *testing.T) {
 	key, val := []byte("key"), []byte("value")
 	ldb := createSerialLevelDb(t, 10, 1, 10)