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import { renderHook } from '@testing-library/react-hooks';
import useLongPress from '../src/useLongPress';
const callback = jest.fn();
const defaultDelay = 300;
const mouseDown = new MouseEvent('mousedown');
const touchStart = new TouchEvent('touchstart');
beforeAll(() => {
jest.useFakeTimers();
});
afterEach(() => {
callback.mockRestore();
jest.clearAllTimers();
});
afterAll(() => {
jest.useRealTimers();
});
it('should not call provided callback without trigger any event', () => {
renderHook(() => useLongPress(callback));
expect(callback).toHaveBeenCalledTimes(0);
jest.advanceTimersByTime(defaultDelay);
expect(callback).toHaveBeenCalledTimes(0);
});
it('should call provided callback onMouseDown', () => {
const { result } = renderHook(() => useLongPress(callback));
const { onMouseDown } = result.current;
expect(callback).toHaveBeenCalledTimes(0);
onMouseDown(mouseDown);
jest.advanceTimersByTime(defaultDelay - 20);
expect(callback).toHaveBeenCalledTimes(0);
jest.advanceTimersByTime(20);
expect(callback).toHaveBeenCalledTimes(1);
});
it('should call provided callback with custom delay', () => {
const customDelay = 1000;
const { result } = renderHook(() => useLongPress(callback, { delay: customDelay }));
const { onMouseDown } = result.current;
expect(callback).toHaveBeenCalledTimes(0);
onMouseDown(mouseDown);
jest.advanceTimersByTime(customDelay - 20);
expect(callback).toHaveBeenCalledTimes(0);
jest.advanceTimersByTime(20);
expect(callback).toHaveBeenCalledTimes(1);
});
it('should not call provided callback if interrupted by onMouseLeave', () => {
const { result } = renderHook(() => useLongPress(callback));
const { onMouseDown, onMouseLeave } = result.current;
expect(callback).toHaveBeenCalledTimes(0);
onMouseDown(mouseDown);
jest.advanceTimersByTime(defaultDelay - 20);
expect(callback).toHaveBeenCalledTimes(0);
onMouseLeave();
jest.advanceTimersByTime(20);
expect(callback).toHaveBeenCalledTimes(0);
expect(setTimeout).toHaveBeenCalledTimes(1);
});
it('should not call provided callback if interrupted by onMouseUp', () => {
const { result } = renderHook(() => useLongPress(callback));
const { onMouseDown, onMouseUp } = result.current;
expect(callback).toHaveBeenCalledTimes(0);
onMouseDown(mouseDown);
jest.advanceTimersByTime(defaultDelay - 20);
expect(callback).toHaveBeenCalledTimes(0);
onMouseUp();
jest.advanceTimersByTime(20);
expect(callback).toHaveBeenCalledTimes(0);
expect(setTimeout).toHaveBeenCalledTimes(1);
});
it('should call provided callback onTouchStart', () => {
const { result } = renderHook(() => useLongPress(callback));
const { onTouchStart } = result.current;
expect(callback).toHaveBeenCalledTimes(0);
onTouchStart(touchStart);
jest.advanceTimersByTime(defaultDelay - 20);
expect(callback).toHaveBeenCalledTimes(0);
jest.advanceTimersByTime(20);
expect(callback).toHaveBeenCalledTimes(1);
});
it('should not call provided callback if interrupted by onTouchEnd', () => {
const { result } = renderHook(() => useLongPress(callback));
const { onTouchStart, onTouchEnd } = result.current;
expect(callback).toHaveBeenCalledTimes(0);
onTouchStart(touchStart);
jest.advanceTimersByTime(defaultDelay - 20);
expect(callback).toHaveBeenCalledTimes(0);
onTouchEnd();
jest.advanceTimersByTime(20);
expect(callback).toHaveBeenCalledTimes(0);
expect(setTimeout).toHaveBeenCalledTimes(1);
});
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