• 日期: 2026-01-29
  • 标签: 教育

test('componentWillUnmount should clear the timer', () => { const wrapper = shallow(); const instance = wrapper.instance(); jest.spyOn(global, 'clearTimeout');

instance.componentWillUnmount();

expect(global.clearTimeout).toHaveBeenCalledWith(instance.timer);

});

输入Jest单元测试：componentWillUnmount clearTimeoutthistimer;

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