@Test
public void testContains() throws Exception {

	Fields schema = new Fields("a1", "a2");
	StormTuple<Object> tuple = new StormTuple<Object>(Tuple.getTupleClass(1).newInstance(),
			schema, -1, null, null, null);
	Assert.assertTrue(tuple.contains("a1"));
	Assert.assertTrue(tuple.contains("a2"));
	Assert.assertFalse(tuple.contains("a3"));
}