public function testTitleRecordReference() { $t = new TitleRecord(); $l = new LocalRecord(); $this->assertNull($l->getTitleRecord()); $t->addLocalRecord($l); $this->assertSame($t, $l->getTitleRecord()); $l->unsetTitleRecord(); $this->assertNull($l->getTitleRecord()); $this->assertFalse($t->containsLocalRecord($l)); }