java - Camel testing with Thread.sleep() -

in "camel in action" book found test example:

@test public void testmovefile() throws exception {     // create new file in inbox folder name hello.txt , containing hello world body     template.sendbodyandheader("file://target/inbox", "hello world", exchange.file_name, "hello.txt");      // wait while let file moved     thread.sleep(2000);      // test file moved     file target = new file("target/outbox/hello.txt");     asserttrue("file should have been moved", target.exists());      // test content correct     string content = context.gettypeconverter().convertto(string.class, target);     assertequals("hello world", content); } 

obviously integration test - test more 1 unit, but:

• are tests (with thread.sleep) considered practice?
• can better, leaving integration test approach ?

well chicken , egg. in camel in action book, later introduce notifybuilder allows test without thread sleep. see chapter 6, section 6.4.2.

there details notifybuilder on camel web site http://camel.apache.org/notifybuilder.html