test: Adds storybook and tests to AsyncEsmComponent (#13517)

superset-frontend/src/components/AsyncEsmComponent/AsyncEsmComponent.stories.tsx

@@ -0,0 +1,51 @@
+/**
+ * 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 AsyncEsmComponent, { PlaceholderProps } from '.';
+
+export default {
+  title: 'AsyncEsmComponent',
+};
+
+const Placeholder = () => <span>Loading...</span>;
+
+const AsyncComponent = ({ bold }: { bold: boolean }) => (
+  <span style={{ fontWeight: bold ? 700 : 400 }}>AsyncComponent</span>
+);
+
+const Component = AsyncEsmComponent(
+  new Promise(resolve => setTimeout(() => resolve(AsyncComponent), 3000)),
+  Placeholder,
+);
+
+export const InteractiveEsmComponent = (args: PlaceholderProps) => (
+  <Component {...args} showLoadingForImport />
+);
+
+InteractiveEsmComponent.args = {
+  bold: true,
+};
+
+InteractiveEsmComponent.story = {
+  parameters: {
+    knobs: {
+      disable: true,
+    },
+  },
+};

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

@@ -0,0 +1,60 @@
+/**
+ * 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 AsyncEsmComponent from 'src/components/AsyncEsmComponent';
+
+const Placeholder = () => <span>Loading...</span>;
+
+const AsyncComponent = ({ bold }: { bold: boolean }) => (
+  <span style={{ fontWeight: bold ? 700 : 400 }}>AsyncComponent</span>
+);
+
+const ComponentPromise = new Promise(resolve =>
+  setTimeout(() => resolve(AsyncComponent), 500),
+);
+
+test('renders without placeholder', async () => {
+  const Component = AsyncEsmComponent(ComponentPromise);
+  render(<Component showLoadingForImport={false} />);
+  expect(screen.queryByRole('status')).not.toBeInTheDocument();
+  expect(await screen.findByText('AsyncComponent')).toBeInTheDocument();
+});
+
+test('renders with default placeholder', async () => {
+  const Component = AsyncEsmComponent(ComponentPromise);
+  render(<Component height={30} showLoadingForImport />);
+  expect(screen.getByRole('status')).toBeInTheDocument();
+  expect(await screen.findByText('AsyncComponent')).toBeInTheDocument();
+});
+
+test('renders with custom placeholder', async () => {
+  const Component = AsyncEsmComponent(ComponentPromise, Placeholder);
+  render(<Component showLoadingForImport />);
+  expect(screen.getByText('Loading...')).toBeInTheDocument();
+  expect(await screen.findByText('AsyncComponent')).toBeInTheDocument();
+});
+
+test('renders with custom props', async () => {
+  const Component = AsyncEsmComponent(ComponentPromise, Placeholder);
+  render(<Component showLoadingForImport bold />);
+  const asyncComponent = await screen.findByText('AsyncComponent');
+  expect(asyncComponent).toBeInTheDocument();
+  expect(asyncComponent).toHaveStyle({ fontWeight: 700 });
+});

superset-frontend/src/components/AsyncEsmComponent.tsx → superset-frontend/src/components/AsyncEsmComponent/index.tsx

@@ -17,7 +17,7 @@
  * under the License.
  */
 import React, { CSSProperties, useEffect, useState, RefObject } from 'react';
-import Loading from './Loading';
+import Loading from '../Loading';
 
 export type PlaceholderProps = {
   showLoadingForImport?: boolean;