@Test
	@SuppressWarnings("unchecked")
	public void stringArray() throws Exception {
		JsonToTupleTransformer transformer = new JsonToTupleTransformer();
		String json = "{\"strings\":[\"one\",\"two\",\"three\"]}";
		Tuple tuple = transformer.transformPayload(json);
		assertThat(tuple.size(), equalTo(1));
		List<String> list = Arrays.asList("one", "two", "three");
		List<String> actual = tuple.getValue("strings", List.class);
		assertThat(actual, equalTo(list));
	}
Unit test for JsonToTupleTransformer.

@author Mark Fisher
spring-xd-tuple/src/test/java/org/springframework/xd/tuple/integration/JsonToTupleTransformerTests.java