I'm having difficulties with being able to create 2 different newsletters with the same name. Whenever I try to input a new newsletter, it gives me an error saying that the mainpage is either in use or nonexistent. What can I put in Title::newFromText( ' ' )->getBaseText() in order to successfully submit 2 different newsletters?

@Ryan10145 I see the point. Can you try creating the first one like - https://github.com/wikimedia/mediawiki-extensions-Newsletter/blob/master/tests/specials/SpecialNewsletterCreateTest.php#L44 (that is a direct creation to the db, but not a problem).

For the second one, I guess you need to manually create a new Wikipage. One way I achieved it last time was:

$title = Title::newFromText( 'TestPage' );
$wikiPage = WikiPage::factory( $title );
$content = new WikitextContent( $text='this is a test' );
$wikiPage->doEditContent( $content, $summary='Test commit' );

That would create a page for that title, and you can possibly use that. Also, from this thread - https://lists.wikimedia.org/pipermail/wikitech-l/2017-December/089342.html -- you can find how to inject a logged in user case so that you can possibly complete the newsletter creation.

Change 400242 had a related patch set uploaded (by Ryan10145; owner: Ryan10145):
[mediawiki/extensions/Newsletter@master] Added a unit test to check that the name must be unique per newsletter

https://gerrit.wikimedia.org/r/400242

Change 400242 merged by jenkins-bot:
[mediawiki/extensions/Newsletter@master] Added a unit test to check that the name must be unique per newsletter

https://gerrit.wikimedia.org/r/400242