@Test
	public void testReadBigDecimalWithFormat() throws Exception {
		Tuple numberFormatTuple = TupleBuilder.tuple()
				.setFormats(Locale.US, null)
				.setConfigurableConversionService(new DefaultTupleConversionService())
				.ofNamesAndValues(tuple.getFieldNames(), tuple.getValues());
		BigDecimal bd = new BigDecimal("424.3");
		assertEquals(bd, numberFormatTuple.getBigDecimal(8));
	}
This is a port of the FieldSet tests from Spring Batch
spring-xd-tuple/src/test/java/org/springframework/xd/tuple/DefaultTupleTestForBatch.java