You may notice when building forge from master, that test output is no longer printed to the console. This is because George Gastaldi has implemented a long standing feature request:

https://issues.jboss.org/browse/FORGE-211

It is now possible to call: getOutput() in Forge test cases extending from AbstractShellTest, making assertions on what your plugin is actually printing to the console.

Assert.assertTrue(getOutput().contains("Expected output"));

--
Lincoln Baxter, III
http://ocpsoft.org
"Simpler is better."