如何在 Jest 中使用 SVG

Question

我将测试以下组件。

页脚/index.jsx

import React from "react";

import logoImg from "@/assets/images/components/header/logo-header.svg";
import HeaderTextImg from "@/assets/images/components/header/header-text.svg";

function Footer() {
  return (
    <div>Footer</div>
  );
}

export default Footer;

一旦我使用npm run test ，就会发生错误

package.json

  "devDependencies": {
    ...
    "identity-obj-proxy": "^3.0.0",
    "jest": "^27.4.7",
    "jest-svg-transformer": "^1.0.0",
    "svg-jest": "^1.0.1",
  },
 "scripts": {
    "test": "jest --watchAll",
    "test-coverage": "jest --coverage", 
  },
  "jest": {
    "moduleDirectories": [
      "node_modules",
      "src"
    ],
    "moduleNameMapper": {
      "\\.(css|scss)$": "identity-obj-proxy"
    },
    "setupFilesAfterEnv": [
      "<rootDir>/src/setupTests.js"
    ],
    "snapshotSerializers": [
      "enzyme-to-json/serializer"
    ]
  }

我试过的
我尝试在package.json中使用jest-svg-transformer ，如下所示：

        "transform": {
            "^.+\\.jsx?$": "babel-jest",
            "^.+\\.svg$": "jest-svg-transformer"
        }

它也显示错误：

    ● Invalid transformer module:
      "/Users/CCCC/Desktop/SourceTree/my-proj/node_modules/jest-svg-transformer/lib/index.js" specified in the "transform" object of Jest configuration
      must export a `process` or `processAsync` or `createTransformer` function.
      Code Transformation Documentation:
      https://jestjs.io/docs/code-transformation

另外，我也尝试过svg-jest但没有工作。

我该如何解决？

更新 1
创建 svgTransform.js 文件并导入 package.json，然后显示以下错误。

Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax.

    Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration.

    By default "node_modules" folder is ignored by transformers.

    Here's what you can do:
     • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it.
     • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript
     • 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/configuration
    For information about custom transformations, see:
    https://jestjs.io/docs/code-transformation

    Details:

    /Users/CCCC/Desktop/SourceTree/my-proj/src/setupTests.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,jest){import { configure } from "enzyme";
                                                                                      ^^^^^^

    SyntaxError: Cannot use import statement outside a module

      at Runtime.createScriptFromCode (node_modules/@jest/core/node_modules/jest-runtime/build/index.js:1728:14)

更新 2
我也试过这种方式也不起作用