Thanks for catching that. I didn't notice before. It was because I ported your "testSolution" method to my test class. In PHPUnit, methods that start with "test" are supposed to be unit test methods. PHPUnit warns you when a unit test does not run any assertions. I renamed the method to "checkSolution" to avoid the problem.

Good criticism. I think it's a little better now. PHPUnit doesn't provide quite as much as verbosity as Jasmine.