superset-frontend/packages/superset-ui-core/src/hooks/useComponentDidMount/useComponentDidMount.test.ts

/**
 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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,
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import { renderHook } from '@testing-library/react-hooks';
import { useComponentDidMount } from './useComponentDidMount';

test('the effect should only be executed on the first render', () => {
  const effect = jest.fn();
  const hook = renderHook(() => useComponentDidMount(effect));
  expect(effect).toHaveBeenCalledTimes(1);
  hook.rerender();
  expect(effect).toHaveBeenCalledTimes(1);
});