Was creating PHP notices when deprecated method caller wasn't a class/method
Found in iTop 3.2.0-dev with itop-object-copier copy.php : it is calling WebPage::add_linked_script directly inside the copy.php script (no class nor function)
Co-authored-by: odain <olivier.dain@combodo.com>
Message was : Support for using expectException() with PHPUnit\Framework\Error\Warning is deprecated and will be removed in PHPUnit 10. Use expectWarning() instead.
This was caused by the set_error_handler() done in DeprecatedCallsLog during startup
Now we are :
* not registering the handler if a PHPUnit test is running (based on a constant set in ItopTestCase::setUp)
* on registration only do it for the required notices
