React.js-用酶模拟点击 [英] React.js - Simulating a click with Enzyme
问题描述
我有这个React.js应用程序,它是一个简单的购物车应用程序. https://codesandbox.io/s/znvk4p70xl
I have this React.js app that is a simple Cart app. https://codesandbox.io/s/znvk4p70xl
问题是我正在尝试使用Jest和Enzyme对应用程序的状态进行单元测试,但它似乎无法正常工作.这是我的 Todo.test.js
单元测试:
The problem is I am trying to unit test the state of the application using Jest and Enzyme but it does not seem to work. Here is my Todo.test.js
unit test:
import React from 'react';
import { shallow, mount, render } from 'enzyme';
import Todo from '../components/Todo';
import { configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';
configure({ adapter: new Adapter() });
test('Test it', async () => {
// Render a checkbox with label in the document
const cart = [
{ name: 'Green', cost: 4 },
{ name: 'Red', cost: 8 },
{ name: 'Blue', cost: 14 }
];
const wrapper = mount(<Todo cart={cart} />);
const firstInput = wrapper.find('.name');
firstInput.simulate('change', { target: { value: 'Pink' } });
const firstCost = wrapper.find('.cost');
firstCost.simulate('change', { target: { value: 200 } });
const submitButton = wrapper.find('.addtocart');
submitButton.simulate('click');
wrapper.update();
expect(wrapper.state('price')).toBe(26);
console.log(wrapper.state());
console.log(wrapper.props().cart);
});
当我运行测试时,当应该添加项目 Pink
时,购物车仍会说同样的话.
When I run the test, the cart still says the same thing when the item Pink
should have been added.
当我模拟 addToCart
方法上的按钮单击时,怎么可能?
How can this be when I have simulated a button click on the addToCart
method?
PASS src/__tests__/todo.test.js
● Console
console.log src/__tests__/todo.test.js:32 { price: 26 }
console.log src/__tests__/todo.test.js:33 [ { name: 'Green', cost: 4 }, { name: 'Red', cost: 8 }, { name: 'Blue', cost: 14 } ]
推荐答案
您试图模拟对类 addtocart
的元素的点击.但是,您没有元素为 addtocart
类.您的添加按钮的元素ID为 submit
.
You are attempting to simulate a click on an element with class addtocart
. However, you don't have an element with class addtocart
. Your add button has an element ID of submit
.
更改此:
const SubmitButton = wrapper.find('.addtocart');
对此:
const SubmitButton = wrapper.find('#submit');
这篇关于React.js-用酶模拟点击的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!