Bugfix: Fix PHP 5.5 incompatibility in test cases.
Bugfix: Fix PHP 5.5 incompatibility in test cases.

PHP 5.5 causes the tests to run with PHPUnit 4.8, which does not have
the createMock function. This causes problems when you *do* call it.

bertptrs/marty,bertptrs/marty,SolutionWeb/marty,SolutionWeb/marty