我在模块中有一个名为handlelistOfTemplates的函数,它调用另一个文件中定义的动作。我想测试当handlelistOfTemplates被调用时,动作文件中的函数被调用正确的参数。
我的容器组件:
import React from 'react';
import { connect } from 'react-redux';
import {bindActionCreators} from 'redux';
import * as getData from '../../services/DataService';
class Container extends React.Component {
constructor(props){
super(props)
this.props.actions.getTemplates(1);
this.state = {
value: 1
}
}
handlelistOfTemplates = (template, index, value) => {
this.props.selectedTemplate(template);
this.setState({ value });
this.props.actions.getTemplates(template);
};
componentDidMount() {
}
render() {
return(
<ListOfTemplates listOfTemplates={this.props.listOfTemplates} value={this.state.value} onChange={this.handlelistOfTemplates}/>
);
}
}
function mapStateToProps({state}) {
return {
listOfTemplates: state.listOfTemplates
}
}
function mapDispatchToProps(dispatch) {
return {
actions: bindActionCreators(getData, dispatch)
};
}
module.exports = connect(mapStateToProps, mapDispatchToProps)(Container);
我的测试:
import React from 'react';
import sinon from 'sinon';
import expect from 'expect';
import { shallow } from 'enzyme';
import PropTypes from 'prop-types';
import getMuiTheme from 'material-ui/styles/getMuiTheme';
import { createMockStore, createMockDispatch } from 'redux-test-utils';
import Container from './Container';
const shallowWithStore = (component, store) => {
const context = {
store,
muiTheme: getMuiTheme(),
};
const childContextTypes = {
muiTheme: React.PropTypes.object.isRequired,
store: PropTypes.object.isRequired
}
return shallow(component, { context, childContextTypes });
};
let store;
const loadComponent = (testState) => {
const props = {
actions: {
getTemplates: () => {return Promise.resolve()}
}
}
store = createMockStore(testState)
return shallowWithStore(<Container {...props}/>, store);
}
const getFakeState = () => {
return {
listOfTemplates: [],
};
}
describe('Container', () => {
let testState, component;
describe("when Appeal template is selected from select template dropdown", () => {
beforeAll(() => {
testState = getFakeState();
component = loadComponent(testState);
});
fit('should update the content in editor', (done) => {
component.dive().find('ListOfTemplates').props().onChange('Appeal', 1, 2);
component.update();
done();
expect(component.dive().state().value).toEqual(2) // error value still is at 1
expect(component.instance().props.actions.getTemplates).toHaveBeenCalled();
});
});
});
当我运行上述测试时,我收到以下错误。
expect(jest.fn())[.not].toHaveBeenCalled()
jest.fn() value must be a mock function or spy.
Received:
function: [Function getTemplates]
我是否应该运行其他东西才能让它发挥作用?可能是我的模拟不正确。
即使我尝试这样做: jest.spyon(component.instance()。props.actions,'getTemplates');在预期错误保持不变之前。
此外,当我检查组件的本地状态是否已被修改时。我没有得到更新状态。
当我打电话给component.dive().find('ListOfTemplates').props().onChange('Appeal', 1, 2);
component.dive().state().value
应该变为2,但它是1。
你可以帮助我在哪里做错了吗?
答案 0 :(得分:1)
你应该将模拟函数getTemplate
传递给你的组件,否则jest
无法检查它是否被调用。
你可以这样做:(注意jest.fn()
)
const props = {
actions: {
getTemplates: jest.fn(() => Promise.resolve())
}
}