@Test
public void testGetIncrementer_CacheByDataSource() throws Exception {

    DataFieldMaxValueIncrementer incrementer1 = MaxValueIncrementerFactory.getIncrementer(mysql, "MY_SEQUENCE");
    DataFieldMaxValueIncrementer incrementer2 = MaxValueIncrementerFactory.getIncrementer(oracle, "MY_SEQUENCE");
    assertNotSame(incrementer1, incrementer2);
}