/** * Provide a backwards compatible version of assertNotWPError for old versions of WordPress */ public function assertNotWPError($actual, $message = '') { if (is_callable('parent::assertNotWPError')) { return parent::assertNotWPError($actual, $message); } if (is_wp_error($actual) && '' === $message) { $message = $actual->get_error_message(); } $this->assertNotInstanceOf('WP_Error', $actual, $message); }