@Test
	public void testReadLongWithPadding() throws Exception {
		Tuple t = TupleBuilder.tuple().of("foo", "000009");
		assertThat(9L, equalTo(t.getLong(0)));
	}
This is a port of the FieldSet tests from Spring Batch
spring-xd-tuple/src/test/java/org/springframework/xd/tuple/DefaultTupleTestForBatch.java