Issue #3082340 by mondrake, longwave, alexpott, Krzysztof Domański: Replace...
Issue #3082340 by mondrake, longwave, alexpott, Krzysztof Domański: Replace assertEquals() overrides in PHPUnit Kernel, Functional and FunctionalJavascript tests with a MarkupInterfaceComparator implementation
(cherry picked from commit 398a61b7)