If exception isn't thrown in `testElementNotClickabledWhenHidden` test and it will fail, then this test will automatically pass, because expected exception wasn't thrown.

I recommend converting `//an exception will be thrown if the element is not visible` comment into some assertion code instead. Better to:
1. do something on a page on click, e.g. display text somewhere
2. do an assertion, that text appeared only after click is displayed on page