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.

Thanks :) Just one more question - when I run it, at the end there's a passed test that just says "Warning". I can't work out what this is or where it's coming from - could you explain?

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

Thanks for your translation :) Is there a reason the example test cases don't provide information about what they're testing on? Seems so handy to have