fetch 无法正常工作,并返回 TypeError: Network request failed [英] fetch doesn't work in jest, and return TypeError: Network request failed
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问题描述
我正在尝试从 karma + PhantomJS 迁移到 Jest + jsDom,但我遇到了问题.UT 中的所有获取都在 Jest 中失败.我试图找出原因.所以我就这样写一个简单的UT
I am trying to migrate from karma + PhantomJS to Jest + jsDom, but I got a problem. all fetch in UT failed in Jest. I am trying to figure out the reason. So I just write a simple UT like this
import fetch from 'isomorphic-fetch';
import $ from 'jquery';
describe('test', () => {
it('should fetch success....', (done) => {
return fetch('http://www.ebay.com/', { method: 'get' })
.then((res) => {
console.log(res);
done();
})
.catch(err => console.log(err));
})
it('should get success....', (done) => {
$.get('http://www.ebay.com/', (res) => {
console.log(res);
done();
}).fail((xhr, statusText, err) => {
console.log(statusText, err);
})
})
})
但还是会出现这样的错误
but still get the error like this
TypeError: Network request failed
at XMLHttpRequest.xhr.onerror (/Users/davidhe/work/activenet/git/aui/node_modules/whatwg-fetch/fetch.js:436:16)
at XMLHttpRequest.callback.(anonymous function) (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/events/EventTa
rget-impl.js:289:32)
at invokeEventListeners (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdo
m/lib/jsdom/living/events/EventTarget-impl.js:219:27)
at invokeInlineListeners (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:166:7)
at EventTargetImpl._dispatch (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:122:7)
at EventTargetImpl.dispatchEvent (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:87
:17)
at XMLHttpRequest.dispatchEvent (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js:61:35
)
at dispatchError (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:994:9)
at validCORSHeaders (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:1009:7)
at receiveResponse (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:871:12)
at Request.client.on.res (/Users/davidhe/work/activenet/git/aui/node_modules/jest-environment-jsdom/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:691:38)
at emitOne (events.js:96:13)
at Request.emit (events.js:188:7)
at Request.onRequestResponse (/Users/davidhe/work/activenet/git/aui/node_modules/request/request.js:1074:10)
at emitOne (events.js:96:13)
at ClientRequest.emit (events.js:188:7)
at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:473:21)
at HTTPParser.parserOnHeadersComplete (_http_common.js:99:23)
at Socket.socketOnData (_http_client.js:362:20)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at readableAddChunk (_stream_readable.js:176:18)
at Socket.Readable.push (_stream_readable.js:134:10)
at TCP.onread (net.js:547:20)
这是我的 package.json
this is my package.json
{
devDependencies:{
"jsdom": "^11.0.0",
"babel-jest": "^20.0.3",
"jest": "^20.0.4"
},
"dependencies": {
"isomorphic-fetch": "^2.2.1"
}
"jest": {
"browser": true,
"testEnvironment": "jsdom",
"cacheDirectory": "./node_modules/.cache",
"verbose": true,
"globals": {
"__STATIC__": true,
"__DEV__": false,
"__TESTING__": true
},
"transformIgnorePatterns": [
"/node_modules/(?!react-aaui).+\.js$"
],
"moduleNameMapper": {
"\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/test/__mocks__/fileMock.js",
"\.(css|less)$": "<rootDir>/test/__mocks__/styleMock.js",
"^imports": "<rootDir>/test/__mocks__/jestImportsMock.js"
},
"testRegex": "(fetch\.(test|spec))\.(jsx|js)$",
"moduleFileExtensions": [
"json",
"jsx",
"js"
],
"moduleDirectories": [
"node_modules",
"src",
"test"
],
"modulePathIgnorePatterns": [],
"snapshotSerializers": [
"enzyme-to-json/serializer"
],
"collectCoverage": false,
"collectCoverageFrom": [
"src/**/*.{js,jsx}",
"!**/__mocks__/**"
],
"coverageReporters": [
"text",
"html"
],
"coverageDirectory": "test/coverage",
"setupFiles": [
"./test/tests.initialState.jest.js"
],
"testPathIgnorePatterns": [
"/node_modules/",
"/examples/",
"/dist/"
]
}
}
任何人都可以帮助我.
推荐答案
这个问题通过add解决了
this question is resolved by add
import { XMLHttpRequest } from 'xmlhttprequest';
global.XMLHttpRequest = XMLHttpRequest;
在 tests.initialState.jest.js 中.
in tests.initialState.jest.js.
之前,我用的是w3c-xmlhttprequest,结果不行.
before, I was using w3c-xmlhttprequest, and it doesn't work.
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