Set babel.

src/testUtils/customTestRender.js

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2019 CZ.NIC z.s.p.o. (http://www.nic.cz/)
+ *
+ * This is free software, licensed under the GNU General Public License v3.
+ * See /LICENSE for more information.
+ */
+
+/* eslint import/export: "off" */
+
+import React from 'react';
+import PropTypes from 'prop-types';
+import {UIDReset} from 'react-uid';
+import {StaticRouter} from 'react-router';
+import {render} from '@testing-library/react'
+
+Wrapper.propTypes = {
+    children: PropTypes.oneOfType([
+        PropTypes.arrayOf(PropTypes.node),
+        PropTypes.node
+    ])
+};
+
+function Wrapper({children}) {
+    return <StaticRouter>
+        <UIDReset>
+            {children}
+        </UIDReset>
+    </StaticRouter>
+}
+
+const customTestRender = (ui, options) => render(ui, {wrapper: Wrapper, ...options});
+
+// re-export everything
+export * from '@testing-library/react'
+
+// override render method
+export {customTestRender as render}