test: add React Testing Library (#11771)

superset-frontend/spec/javascripts/explore/components/ControlRow_spec.tsx

@@ -0,0 +1,36 @@
+/**
+ * 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.
+ */
+import React from 'react';
+import { render } from 'spec/helpers/testing-library';
+import ControlSetRow from 'src/explore/components/ControlRow';
+
+describe('ControlSetRow', () => {
+  it('renders a single row with one element', () => {
+    const { getAllByText } = render(
+      <ControlSetRow controls={[<p>My Control 1</p>]} />,
+    );
+    expect(getAllByText('My Control 1')).toHaveLength(1);
+  });
+  it('renders a single row with two elements', () => {
+    const { getAllByText } = render(
+      <ControlSetRow controls={[<p>My Control 1</p>, <p>My Control 2</p>]} />,
+    );
+    expect(getAllByText(/My Control/)).toHaveLength(2);
+  });
+});