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import React, { useState } from 'react';
import { act, fireEvent, render } from '../../../tests/utils';
import Button from '../button';
const specialDelay = 9529;
const Content = () => {
const [loading, setLoading] = useState(false);
const toggleLoading = () => {
setLoading(!loading);
};
const [visible, setVisible] = useState(true);
const toggleVisible = () => {
setVisible(!visible);
};
return (
<div>
<button type="button" id="toggle_loading" onClick={toggleLoading}>
Toggle Loading
</button>
<button type="button" id="toggle_visible" onClick={toggleVisible}>
Toggle Visible
</button>
{visible && <Button type="text" loading={loading ? { delay: specialDelay } : false} />}
</div>
);
};
it('Delay loading timer in Button component', () => {
const otherTimer = 9528;
jest.spyOn<Window, 'setTimeout'>(window, 'setTimeout').mockReturnValue(otherTimer);
jest.restoreAllMocks();
const wrapper = render(<Content />);
const btnTimer = 9527;
const setTimeoutMock = jest
.spyOn<Window, 'setTimeout'>(window, 'setTimeout')
.mockReturnValue(btnTimer);
const clearTimeoutMock = jest.spyOn<Window, 'clearTimeout'>(window, 'clearTimeout');
// other component may call setTimeout or clearTimeout
const setTimeoutCount = () => {
const items = setTimeoutMock.mock.calls.filter((item) => item[1] === specialDelay);
return items.length;
};
const clearTimeoutCount = () => {
const items = clearTimeoutMock.mock.calls.filter((item) => item[0] === btnTimer);
return items.length;
};
// switch loading state to true
fireEvent.click(wrapper.container.querySelectorAll('#toggle_loading')[0]);
expect(setTimeoutCount()).toBe(1);
expect(clearTimeoutCount()).toBe(0);
// trigger timer handler
act(() => {
const timerHandler = setTimeoutMock.mock.calls[0][0];
if (typeof timerHandler === 'function') {
timerHandler();
}
});
expect(setTimeoutCount()).toBe(1);
expect(clearTimeoutCount()).toBe(0);
// switch loading state to false
fireEvent.click(wrapper.container.querySelectorAll('#toggle_loading')[0]);
expect(setTimeoutCount()).toBe(1);
expect(clearTimeoutCount()).toBe(0);
// switch loading state to true
fireEvent.click(wrapper.container.querySelectorAll('#toggle_loading')[0]);
expect(setTimeoutCount()).toBe(2);
expect(clearTimeoutCount()).toBe(0);
// switch loading state to false
fireEvent.click(wrapper.container.querySelectorAll('#toggle_loading')[0]);
expect(setTimeoutCount()).toBe(2);
expect(clearTimeoutCount()).toBe(1);
// switch loading state to true
fireEvent.click(wrapper.container.querySelectorAll('#toggle_loading')[0]);
// remove Button component
fireEvent.click(wrapper.container.querySelectorAll('#toggle_visible')[0]);
expect(setTimeoutCount()).toBe(3);
expect(clearTimeoutCount()).toBe(2);
jest.restoreAllMocks();
});
it('Delay loading while use loading delay at first time', () => {
const Demo = () => <Button loading={{ delay: specialDelay }} />;
const wrapper = render(<Demo />);
expect(wrapper.container.firstChild).not.toHaveClass('ant-btn-loading');
});
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