@Before
	public void setUp() {
		zk = new EmbeddedZooKeeper();
		zk.start();
		zooKeeperConnection = new ZooKeeperConnection("localhost:" + zk.getClientPort());
	}
Parse streams and verify either the correct abstract syntax tree is produced or the current exception comes out.

@author Andy Clement
@author David Turanski
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/stream/dsl/StreamConfigParserTests.java