@Test
public void testCheckAndMutateRow() {

  ConditionalRowMutation checkAndMutate =
      ConditionalRowMutation.create(TABLE_ID, ROW_KEY)
          .then(Mutation.create().setCell(COL_FAMILY, QUALIFIER_1, VALUE_1));
  when(dataClientV2.checkAndMutateRow(checkAndMutate)).thenReturn(Boolean.TRUE);
  assertTrue(dataGCJClient.checkAndMutateRow(checkAndMutate));
  verify(dataClientV2).checkAndMutateRow(checkAndMutate);
}