public function testExportCollection() { $book = new Book(); $ret = $book->create(['title' => 'Run & Skate']); $this->assertResultSuccess($ret); $author = new Author(); $ret = $author->create(array('name' => 'Z', 'email' => 'z@z', 'identity' => 'z')); $this->assertResultSuccess($ret); $exporter = new XMLExporter(); $exporter->exportCollection(new BookCollection()); }