--- /dev/null
+/**
+ * Concatenate a DRUPAL_TEST_BASE_URL variable and a pathname.
+ *
+ * This provides a custom command, .relativeURL()
+ *
+ * @param {string} pathname
+ * The relative path to append to DRUPAL_TEST_BASE_URL
+ * @param {function} callback
+ * A callback which will be called.
+ * @return {object}
+ * The 'browser' object.
+ */
+exports.command = function drupalRelativeURL(pathname, callback) {
+ const self = this;
+ this.url(`${process.env.DRUPAL_TEST_BASE_URL}${pathname}`);
+
+ if (typeof callback === 'function') {
+ callback.call(self);
+ }
+ return this;
+};