private EventuallyMatcher<TcpSink> tcpSinkReceived(String value) {
		return new EventuallyMatcher<TcpSink>(new TcpSinkContentsMatcher(value));
	}
Tests for tcp source and sink.

@author Eric Bottard
@author Patrick Peralta
spring-xd-shell/src/test/java/org/springframework/xd/shell/command/AbstractTcpModulesTests.java