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内部の非同期呼び出しcomponentDidMountが React コンポーネントの状態を設定することをテストする最良の方法は何ですか? 文脈上、私がテストに使用しているライブラリは、、、、Mochaおよびです。ChaiEnzymeSinon

コード例を次に示します。

/* 
 * assume a record looks like this:
 * { id: number, name: string, utility: number }
 */

// asyncComponent.js
class AsyncComponent extends React.Component {
    constructor(props) {
        super(props);

        this.state = {
            records: []
        };
    }

    componentDidMount() {
        // assume that I'm using a library like `superagent` to make ajax calls that returns Promises

        request.get('/some/url/that/returns/my/data').then((data) => {
            this.setState({
                records: data.records
            });
        });
    }

    render() {
        return (
            <div className="async_component">
                { this._renderList() }
            </div>
        );
    }

    _renderList() {
        return this.state.records.map((record) => {
            return (
                <div className="record">
                    <p>{ record.name }</p>
                    <p>{ record.utility }</p>
                </div>
            );
        });
    }
}


// asyncComponentTests.js
describe("Async Component Tests", () => {
    it("should render correctly after setState in componentDidMount executes", () => {
        // I'm thinking of using a library like `nock` to mock the http request

       nock("http://some.url.com")
           .get("/some/url/that/returns/my/data")
           .reply(200, {
               data: [
                   { id: 1, name: "willson", utility: 88 },
                   { id: 2, name: "jeffrey", utility: 102 }
               ]
           });

       const wrapper = mount(<AsyncComponent />);

       // NOW WHAT? This is where I'm stuck.
    });
});
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3 に答える 3