public function testWritePropertyIsIgnoredIfPropertyPathIsNull() { $author = new Author(); $author->child = $child = new Author(); $standaloneChild = new Author(); $form = new Form('child'); $form->setData($standaloneChild); $form->setPropertyPath(null); $form->writeProperty($author); // $author->child was not modified $this->assertSame($child, $author->child); }