$title: title object related to the revision
$rev: revision (object) that will be viewed
+'UnitTestsAfterDatabaseSetup': Called right after MediaWiki's test infrastructure
+has finished creating/duplicating core tables for unit tests.
+$database: Database in question
+$prefix: Table prefix to be used in unit tests
+
+'UnitTestsBeforeDatabaseTeardown': Called right before MediaWiki tears down its
+database infrastructure used for unit tests.
+
'UnitTestsList': Called when building a list of paths containing PHPUnit tests.
Since 1.24: Paths pointing to a directory will be recursively scanned for
test case files matching the suffix "Test.php".