public function testAddPostObject() { $builder = new FieldsBuilder('fields'); $builder->addPostObject('related_page')->setConfig('post_type', 'page'); $expectedConfig = ['fields' => [['name' => 'related_page', 'type' => 'post_object', 'post_type' => 'page']]]; $this->assertArraySubset($expectedConfig, $builder->build()); }