Javascript Axios请求引发未知错误
我正在尝试对正在开发的应用程序进行单元测试，但在axios中发出AJAX请求的函数方面遇到了问题。以下是我为其编写的模拟函数（注意：MockPBufData.txt文件是一个使用协议缓冲区序列化的文件，我从datamine.mta.info下载了该文件。下载该文件可能会弄乱其格式并导致此错误？） 下面是失败的测试（我期望的属性是在datamine.mta.info上找到的每个反序列化文件上）： 最后，这里是Jest错误以及来自控制台的堆栈跟踪：Javascript Axios请求引发未知错误,javascript,node.js,reactjs,protocol-buffers,jestjs,Javascript,Node.js,Reactjs,Protocol Buffers,Jestjs,我正在尝试对正在开发的应用程序进行单元测试，但在axios中发出AJAX请求的函数方面遇到了问题。以下是我为其编写的模拟函数（注意：MockPBufData.txt文件是一个使用协议缓冲区序列化的文件，我从datamine.mta.info下载了该文件。下载该文件可能会弄乱其格式并导致此错误？） 下面是失败的测试（我期望的属性是在datamine.mta.info上找到的每个反序列化文件上）： 最后，这里是Jest错误以及来自控制台的堆栈跟踪： expect(object)[.not].toHa
expect(object)[.not].toHaveProperty(path, value)
Expected object to be an object. Received:
undefined: undefined
at Object.<anonymous>.it (src/tests/api.test.js:12:37)
at Promise.resolve.then.el (node_modules/p-map/index.js:42:16)
at process._tickCallback (internal/process/next_tick.js:109:7)
{ Error: Network Error
at createError (/Users/Ben/React/subway-checker/node_modules/axios/lib/core/createError.js:16:15)
at XMLHttpRequest.handleError [as onerror] (/Users/Ben/React/subway-checker/node_modules/axios/lib/adapters/xhr.js:87:14)
at XMLHttpRequest.callback.(anonymous function) (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:289:32)
at invokeEventListeners (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:219:27)
at invokeInlineListeners (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:166:7)
at EventTargetImpl._dispatch (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:122:7)
at EventTargetImpl.dispatchEvent (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:87:17)
at XMLHttpRequest.dispatchEvent (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js:61:35)
at XMLHttpRequest.abort (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:405:16)
at Object.abort (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/xhr-utils.js:315:13)
at RequestManager.close (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/nodes/Document-impl.js:146:21)
at Window.close (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/browser/Window.js:362:29)
at JSDOMEnvironment.dispose (/Users/Ben/React/subway-checker/node_modules/jest-environment-jsdom/build/index.js:44:19)
at Promise.resolve.then (/Users/Ben/React/subway-checker/node_modules/jest/node_modules/jest-cli/build/runTest.js:102:17)
at process._tickCallback (internal/process/next_tick.js:109:7)
config:
{ adapter: [Function: xhrAdapter],
transformRequest: { '0': [Function: transformRequest] },
transformResponse: { '0': [Function: transformResponse] },
timeout: 0,
xsrfCookieName: 'XSRF-TOKEN',
xsrfHeaderName: 'X-XSRF-TOKEN',
maxContentLength: -1,
validateStatus: [Function: validateStatus],
headers: { Accept: 'application/json, text/plain, */*' },
method: 'get',
url: './MockPBufData.txt',
data: undefined },
request:
XMLHttpRequest {
onabort: null,
onerror: [Function: handleError],
onload: null,
onloadend: null,
onloadstart: null,
onprogress: null,
ontimeout: [Function: handleTimeout],
upload:
XMLHttpRequestUpload {
onabort: null,
onerror: null,
onload: null,
onloadend: null,
onloadstart: null,
onprogress: null,
ontimeout: null,
_ownerDocument: [Object] },
onreadystatechange: [Function: handleLoad] },
response: undefined }
expect（object）[.not].toHaveProperty（路径，值）
预期对象是一个对象。收到：
未定义：未定义
at Object..it（src/tests/api.test.js:12:37）
在Promise.resolve.then.el（node_modules/p-map/index.js:42:16）
在进程中。_tick回调（内部/process/next_tick.js:109:7）
{错误：网络错误
在createError（/Users/Ben/React/subway checker/node_modules/axios/lib/core/createError.js:16:15）
在XMLHttpRequest.handleError[as-onerror]（/Users/Ben/React/subway-checker/node_-modules/axios/lib/adapters/xhr.js:87:14）
在XMLHttpRequest.callback.（匿名函数）（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget impl.js:289:32）
在invokeEventListeners（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget impl.js:219:27）
在invokeInlineListeners（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget impl.js:166:7）
在EventTargetImpl.发布时（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget impl.js:122:7）
在EventTargetImpl.dispatchEvent（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget impl.js:87:17）
在XMLHttpRequest.dispatchEvent（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js:61:35）
在XMLHttpRequest.abort（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/XMLHttpRequest.js:405:16）
在Object.abort（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/xhr utils.js:315:13）
在RequestManager.close（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/living/nodes/Document impl.js:146:21）
在Window.close（/Users/Ben/React/subway checker/node_modules/jsdom/lib/jsdom/browser/Window.js:362:29）
在JSDOMEnvironment.dispose（/Users/Ben/React/subway checker/node_modules/jest-environment jsdom/build/index.js:44:19）
在Promise.resolve.then（/Users/Ben/React/subway checker/node_modules/jest/node_modules/jest cli/build/runTest.js:102:17）
在进程中。_tick回调（内部/process/next_tick.js:109:7）
配置：
{适配器：[函数：xhrAdapter]，
transformRequest:{0'：[函数：transformRequest]}，
transformResponse:{0'：[函数：transformResponse]}，
超时：0，
xsrfCookieName:'XSRF-TOKEN'，
xsrfHeaderName:'X-XSRF-TOKEN'，
maxContentLength:-1，
validateStatus:[函数：validateStatus]，
标题：{Accept:'application/json，text/plain，*/*'}，
方法：“get”，
url:“./MockPBufData.txt”，
数据：未定义}，
请求：
XMLHttpRequest{
onabort:null，
OneError:[函数：handleError]，
onload:null，
onloadend:null，
onloadstart:null，
onprogress:null，
ontimeout:[函数：handleTimeout]，
上传：
XMLHttpRequestUpload{
onabort:null，
onerror:null，
onload:null，
onloadend:null，
onloadstart:null，
onprogress:null，
ontimeout:null，
_ownerDocument:[对象]}，
onreadystatechange:[函数：handleLoad]}，
响应：未定义}
RequestMock.feedexpect（RequestMock（））.toHaveProperty（'header.gtfs\u realtime\u version'，'1.0'）您无法访问函数的内部变量（RequestMock.feed
）。。。该函数实际上返回它，因此您只需要以下内容：
expect（RequestMock（））.toHaveProperty（'header.gtfs\u realtime\u version'，'1.0'）做了更改，我仍然会收到相同的错误。做了更改，我仍然会收到相同的错误。
import React from 'react';
import RequestMock from '../mocks/RequestMock';
it('makes decoded data accessible from RequestMock.feed', () => {
expect(RequestMock.feed).toHaveProperty('header.gtfs_realtime_version', '1.0');
});
expect(object)[.not].toHaveProperty(path, value)
Expected object to be an object. Received:
undefined: undefined
at Object.<anonymous>.it (src/tests/api.test.js:12:37)
at Promise.resolve.then.el (node_modules/p-map/index.js:42:16)
at process._tickCallback (internal/process/next_tick.js:109:7)
{ Error: Network Error
at createError (/Users/Ben/React/subway-checker/node_modules/axios/lib/core/createError.js:16:15)
at XMLHttpRequest.handleError [as onerror] (/Users/Ben/React/subway-checker/node_modules/axios/lib/adapters/xhr.js:87:14)
at XMLHttpRequest.callback.(anonymous function) (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:289:32)
at invokeEventListeners (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:219:27)
at invokeInlineListeners (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:166:7)
at EventTargetImpl._dispatch (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:122:7)
at EventTargetImpl.dispatchEvent (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js:87:17)
at XMLHttpRequest.dispatchEvent (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js:61:35)
at XMLHttpRequest.abort (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:405:16)
at Object.abort (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/xhr-utils.js:315:13)
at RequestManager.close (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/living/nodes/Document-impl.js:146:21)
at Window.close (/Users/Ben/React/subway-checker/node_modules/jsdom/lib/jsdom/browser/Window.js:362:29)
at JSDOMEnvironment.dispose (/Users/Ben/React/subway-checker/node_modules/jest-environment-jsdom/build/index.js:44:19)
at Promise.resolve.then (/Users/Ben/React/subway-checker/node_modules/jest/node_modules/jest-cli/build/runTest.js:102:17)
at process._tickCallback (internal/process/next_tick.js:109:7)
config:
{ adapter: [Function: xhrAdapter],
transformRequest: { '0': [Function: transformRequest] },
transformResponse: { '0': [Function: transformResponse] },
timeout: 0,
xsrfCookieName: 'XSRF-TOKEN',
xsrfHeaderName: 'X-XSRF-TOKEN',
maxContentLength: -1,
validateStatus: [Function: validateStatus],
headers: { Accept: 'application/json, text/plain, */*' },
method: 'get',
url: './MockPBufData.txt',
data: undefined },
request:
XMLHttpRequest {
onabort: null,
onerror: [Function: handleError],
onload: null,
onloadend: null,
onloadstart: null,
onprogress: null,
ontimeout: [Function: handleTimeout],
upload:
XMLHttpRequestUpload {
onabort: null,
onerror: null,
onload: null,
onloadend: null,
onloadstart: null,
onprogress: null,
ontimeout: null,
_ownerDocument: [Object] },
onreadystatechange: [Function: handleLoad] },
response: undefined }