RepoGroup::destroySingleton();
FileBackendGroup::destroySingleton();
$fakeCallback = $this->getMock( 'RepoGroupTestHelper' );
$fakeCallback->expects( $this->never() )->method( 'callback' );
RepoGroup::singleton()->forEachForeignRepo(
RepoGroup::destroySingleton();
FileBackendGroup::destroySingleton();
$fakeCallback = $this->getMock( 'RepoGroupTestHelper' );
$fakeCallback->expects( $this->never() )->method( 'callback' );
RepoGroup::singleton()->forEachForeignRepo(