@superset-ui/core/lib/hooks/useChangeEffect/useChangeEffect.test.js

Superset UI core

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 * 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 { useChangeEffect } from './useChangeEffect';
test('call callback the first time with undefined and value', () => {
    const callback = jest.fn();
    renderHook(props => useChangeEffect(props.value, props.callback), {
        initialProps: { value: 'value', callback },
    });
    expect(callback).toHaveBeenCalledTimes(1);
    expect(callback).toHaveBeenNthCalledWith(1, undefined, 'value');
});
test('do not call callback 2 times if the value do not change', () => {
    const callback = jest.fn();
    const hook = renderHook(props => useChangeEffect(props.value, props.callback), {
        initialProps: { value: 'value', callback },
    });
    hook.rerender({ value: 'value', callback });
    expect(callback).toHaveBeenCalledTimes(1);
});
test('call callback whenever the value changes', () => {
    const callback = jest.fn();
    const hook = renderHook(props => useChangeEffect(props.value, props.callback), {
        initialProps: { value: 'value', callback },
    });
    hook.rerender({ value: 'value-2', callback });
    expect(callback).toHaveBeenCalledTimes(2);
    expect(callback).toHaveBeenNthCalledWith(2, 'value', 'value-2');
});
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