@Test
public void testCheckAndMutateRowAsync() throws Exception {

  ConditionalRowMutation conditionalRowM = ConditionalRowMutation.create(TABLE_ID, ROW_KEY);
  when(mockDataClient.checkAndMutateRowAsync(conditionalRowM))
      .thenReturn(ApiFutures.immediateFuture(Boolean.TRUE));
  assertTrue(dataClientWrapper.checkAndMutateRowAsync(conditionalRowM).get());
  verify(mockDataClient).checkAndMutateRowAsync(conditionalRowM);
}