我有这个常数:
export const clientData = fetch(`${process.env.SERVER_HOST}clientData.json`)
.then(response => response.json());
哪种方法正常,现在我正在使用Jasmine和fetch-mock
进行测试这是我的测试:
import { clientData } from '../../../src/js/services/client-data.fetch';
import fetchMock from 'fetch-mock';
describe('test', () => {
const exampleResponse = {
clientData: 'test'
};
beforeAll(() => {
fetchMock.mock('*', exampleResponse);
});
it('ooo', () => {
console.log('here', clientData);
var a = clientData;
a.then(b=> console.log(b))
});
});
clientData
的console.log返回Promise
(没关系),但永远不会触发then
。
没看到原因,我的代码出了什么问题?
答案 0 :(得分:1)
发生这种情况是因为测试执行本质上是同步的,它不会等待断言发生,因此您必须传递 done
回调并从 then
内的测试中调用它回调
像这样:
import { clientData } from '../../../src/js/services/client-data.fetch';
import fetchMock from 'fetch-mock';
describe('test', () => {
const exampleResponse = {
clientData: 'test'
};
beforeAll(() => {
fetchMock.mock('*', exampleResponse);
});
it('ooo', (done) => {
console.log('here', clientData);
var a = clientData;
a.then(b=> {
console.log(b);
done();
})
});
});