In PHP 8.2 and later, setting a value to an undeclared class property is
deprecated and emits a deprecation notice.
So we need to add missing class properties that still need to be declared.
// Removed test_add_malformed_favourite()
PHPUnit version >= 9.5 no longer converts PHP deprecations to exceptions by default.
To comply with PHP 8.2, which will deprecate the dynamic properties,
we need to remove test_add_malformed_favourite()
because the test will raise a warning for dynamic property deprecations.
Meirza
4937a1fd1c