rusackas commented on code in PR #45604:
URL: https://github.com/apache/superset/pull/45604#discussion_r4369896273


##########
superset-frontend/src/dashboard/components/ColorSchemeSelect.test.tsx:
##########
@@ -0,0 +1,56 @@
+/**
+ * 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 {
+  render,
+  screen,
+  userEvent,
+  waitFor,
+} from 'spec/helpers/testing-library';
+import ColorSchemeSelect from './ColorSchemeSelect';
+
+const openAndGetPopup = async () => {
+  await userEvent.click(
+    screen.getByRole('combobox', { name: 'Select color scheme' }),
+  );
+  await waitFor(() =>
+    expect(document.querySelector('.ant-select-dropdown')).toBeInTheDocument(),
+  );
+  return document.querySelector('.ant-select-dropdown') as HTMLElement;
+};
+
+test('portals the palette inside the enclosing modal container', async () => {
+  render(
+    <div className="ant-modal-container" data-test="modal">
+      <ColorSchemeSelect onChange={jest.fn()} />
+    </div>,
+  );
+  const popup = await openAndGetPopup();
+  expect(screen.getByTestId('modal').contains(popup)).toBe(true);
+});
+
+test('portals the palette to document.body outside a modal', async () => {
+  render(
+    <div data-test="wrapper">
+      <ColorSchemeSelect onChange={jest.fn()} />
+    </div>,
+  );
+  const popup = await openAndGetPopup();
+  expect(screen.getByTestId('wrapper').contains(popup)).toBe(false);
+  expect(document.body.contains(popup)).toBe(true);

Review Comment:
   Added a grouped-scheme test to `ColorSchemeSelect.test.tsx` that checks the 
popup root carries an emotion class whose rule targets 
`.ant-select-item-option-grouped`. Not run locally, so CI is the first real run.



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