test: Adds tests and storybook to RefreshLabel (#13409)

superset-frontend/src/components/RefreshLabel/RefreshLabel.test.tsx

@@ -0,0 +1,47 @@
+/**
+ * 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, screen } from 'spec/helpers/testing-library';
+import userEvent from '@testing-library/user-event';
+import RefreshLabel from 'src/components/RefreshLabel';
+
+test('renders with default props', () => {
+  render(<RefreshLabel tooltipContent="Tooltip" onClick={jest.fn()} />);
+  const refresh = screen.getByRole('button');
+  expect(refresh).toBeInTheDocument();
+  userEvent.hover(refresh);
+});
+
+test('renders tooltip on hover', async () => {
+  const tooltipText = 'Tooltip';
+  render(<RefreshLabel tooltipContent={tooltipText} onClick={jest.fn()} />);
+  const refresh = screen.getByRole('button');
+  userEvent.hover(refresh);
+  const tooltip = await screen.findByRole('tooltip');
+  expect(tooltip).toBeInTheDocument();
+  expect(tooltip).toHaveTextContent(tooltipText);
+});
+
+test('triggers on click event', () => {
+  const onClick = jest.fn();
+  render(<RefreshLabel tooltipContent="Tooltip" onClick={onClick} />);
+  const refresh = screen.getByRole('button');
+  userEvent.click(refresh);
+  expect(onClick).toHaveBeenCalled();
+});