如何用笑话和酶测试选择html标签

Question

我到处都搜索了它，但是找不到该问题的答案。我有React功能组件，它从给定选项的数组中选择选项。 1. Main Home组件具有第一个选项的初始状态，并设置为： 2. OptionComponent中的代码 3.到目前为止，我的测试代码。我想为所有选项添加测试：

const [optionState, setOption] = React.useState('option1'); // set as the first Array Element
   const handleSelectOption = selectedValue => {
       setOption(selectedValue);
   };
   return(
      <OptionComponent onSelectOption={handleSelectOption} />
   );
//2:
const handleChange = event => {
     props.onSelectOption(event.target.value);
   }; //this i used to pass props from child to parent
   const optionsArray = [
    'option1',
    'option2',
    'option3'];
   return (
    <select
      onChange={handleChange}
    >
      {optionsArray.map(opt => (
        <option key={opt}>{opt}</option>
      ))}
    </select>
  );
 //3:
describe('Option Component', () => {
        const values = [
        'option1',
        'option2',
        'option3'];

        const secondValue = values[0];
        const onChange = jest.fn();
        let wrapper;

        it('first test', () => {
            wrapper = shallow(<OptionComponent />);
            expect(wrapper).toMatchSnapshot();
            wrapper.update();
            wrapper.find('select').props().props.onChange({target:{value: undefined}}); 
           //I changed simulate to props.onChange because simulate did NOT work 
           // .props().props.onChange exists beacause without 
           //props onSelectOption could not bw found.
            expect(onChange).toBe({secondValue});
        });

      });```