I get an error with this test vendor/bin/phpunit "qformat_wordtable_export_test" question/format/wordtable/tests/wordtableformat_test.php but i don't have qtype_multichoiceset plugin in my system.

...EDebugging: Invalid get_string() identifier: 'pluginnamesummary' or component 'qtype_multichoiceset'. Perhaps you are missing $string['pluginnamesummary'] = ''; in /lang/en/qtype_multichoiceset.php?

In moodle/question/format/wordtable/format.php (ln 548) this is the code to give this error :

// Add All-or-Nothing MCQ question type strings if present.

if (is_object(question_bank::get_qtype('multichoiceset', false))) {

$textstrings['qtype_multichoiceset'] = array('pluginnamesummary','showeachanswerfeedback');

}

The question_bank::get_qtype('multichoiceset', false) always return an object even if you use question_bank::get_qtype('blablabla', false) . So no matter the result it's still an object.

I think it's better way to use to check if an qtype is installed

$qtypes = question_bank::get_all_qtypes();

and after checked if exist in array.