test: add React Testing Library (#11771)

superset-frontend/spec/helpers/setup.ts

@@ -0,0 +1,28 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+// `jest-dom` must be imported before `jest-enzyme` because there are conflicts
+// between these two.
+import '@testing-library/jest-dom/extend-expect';
+import 'jest-enzyme';
+import './shim';
+import { configure as configureTestingLibrary } from '@testing-library/react';
+
+configureTestingLibrary({
+  testIdAttribute: 'data-test-id',
+});