public function testAddChild() { $c1 = new MenuNode(); $c2 = new MenuNode(); $m = new MenuNode(); $m->addChild($c1); $ret = $m->addChild($c2); $children = $m->getChildren(); $this->assertCount(2, $children); $this->assertSame($m, $children[0]->getParentDocument()); $this->assertSame($c2, $ret); }