Reactjs Jest遇到意外标记,因为尝试导入Jest无法分析的文件
PS E:\react\Code\UI>纱线测试 纱线运行v1.17.3 $jest 失败src/App.test.js ● 测试套件无法运行Reactjs Jest遇到意外标记,因为尝试导入Jest无法分析的文件,reactjs,testing,react-redux,jestjs,enzyme,Reactjs,Testing,React Redux,Jestjs,Enzyme,PS E:\react\Code\UI>纱线测试 纱线运行v1.17.3 $jest 失败src/App.test.js ● 测试套件无法运行 Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript. By default, if Jest sees a
Jest encountered an unexpected token
This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.
By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".
Here's what you can do:
• To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
• If you need a custom transformation specify a "transform" option in your config.
• If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.
You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html
Details:
E:\react\Code\UI\src\mainpage.css:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){body{font-size:12px;font-family:arial,sans-serif;background-size:200% 100%!important;height:100vh}
^
SyntaxError: Unexpected token {
1 | import React, { Component } from "react";
> 2 | import "../mainpage.css";
| ^
3 | import { connect } from "react-redux";
4 | import propTypes from "prop-types";
5 | import { fetchPost } from "../redux/action/postaction";
at ScriptTransformer._transformAndBuildScript (E:\react../../../../Code/UI/node_modules/@jest/transform/build/ScriptTransformer.js:471:17)
at ScriptTransformer.transform (E:\react../../../../Code/UI/node_modules/@jest/transform/build/ScriptTransformer.js:513:25)
at Object.<anonymous> (E:\react../../../../Code/UI/src/page/Header.js:2:1)
Jest遇到意外的令牌
这通常意味着您正试图导入Jest无法解析的文件,例如,它不是纯JavaScript。
默认情况下,如果Jest看到一个Babel配置,它将使用它来转换您的文件,忽略“node_modules”。
以下是您可以做的:
•要转换某些“节点模块”文件,可以在配置中指定自定义“transformIgnorePatterns”。
•如果需要自定义转换,请在配置中指定“转换”选项。
•如果您只是想模拟您的非JS模块(例如二进制资产),您可以使用“moduleNameMapper”配置选项将其剔除。
您将在文档中找到这些配置选项的更多详细信息和示例:
https://jestjs.io/docs/en/configuration.html
细节:
E:\react\Code\UI\src\mainpage.css:1
({)对象。有关此命令的文档。模拟css文件
Jest不知道如何处理css文件。你需要在Jest配置中处理它们。这里有非常好的信息
但本质上,您需要在jest配置中添加类似的内容
// package.json (for CSS Modules)
{
"jest": {
"moduleNameMapper": {
"\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/__mocks__/fileMock.js",
"\\.(css|less)$": "identity-obj-proxy"
}
}
}
//package.json(用于CSS模块)
{
“笑话”:{
“moduleNameMapper”:{
“\ \(jpg | jpeg | png | gif | eot | otf | webp | svg | ttf | woff | woff2 | mp4 | webm | wav | mp3 | m4a | aac | oga |)$”:“/(uu mocks |/uu/fileMock.js,
“\\(css |小于)$”:“标识obj代理”
}
}
}