Detecting JUnit "tests" that never assert anything -

we used have technical director liked contribute code , enthusiastic adding unit tests. unfortunately preferred style of test produce output screen , visually check result.

given have large bank of tests, there tools or techniques use identify tests never assert?

since that's 1 time operation would:

• scan test methods (easy, junit report xml)
• use ide or other search references assert.*, export result list of method
• awk/perl/excel results find mismatches

edit: option references system.out or whatever preferred way output stuff was, tests won't have that.