如何使用Jest测试NextJS应用程序的路由API路由

huangapple
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英文:

How to test NextJS App Router API route with Jest

问题

以下是翻译好的内容：

  1. 我有一个非常简单的API路由，我想要测试：
  3. 文件 ./src/app/api/name
  4. ```typescript
  5. import { NextResponse } from 'next/server';
  7. export async function GET() {
  8.     const name = process.env.NAME;
  10.     return NextResponse.json({
  11.         name,
  12.     });
  13. }

我尝试这样测试它：

  1. import { GET } from './route';
  3. describe('name', () => {
  4.     it('should return url from environment variables', async () => {
  5.         const result = await GET();
  6.         const { name } = await result.json();
  8.         expect(name).toEqual('test');
  9.     });
  10. });

但是然后出现了错误：

  1.  FAIL  src/app/api/name/route.spec.ts
  2.   ● Test suite failed to run
  4.     ReferenceError: Response is not defined
  6.        9 | }
  7.       10 |
  9.       at Object.Response (node_modules/next/src/server/web/spec-extension/response.ts:29:51)
  10.       at Object.<anonymous> (node_modules/next/dist/server/web/exports/next-response.js:12:19)
  11.       at Object.<anonymous> (src/api/name/route.ts:11:62)
  12.       at Object.<anonymous> (src/api/name/route.spec.ts:5:16)

我尝试按照一些关于测试NextJS API路由的说明，但它们都基于页面路由。

我该如何正确测试这个？

  2. <details>
  3. <summary>英文:</summary>
  5. I have a very simple API route which I would like to test:
  7. File ./src/app/api/name
  8. ```typescript
  9. import { NextResponse } from &#39;next/server&#39;;
  11. export async function GET() {
  12.     const name = process.env.NAME;
  14.     return NextResponse.json({
  15.         name,
  16.     });
  17. }

I have tried to test this like this:

  1. import { GET } from &#39;./route&#39;;
  3. describe(&#39;name&#39;, () =&gt; {
  4.     it(&#39;should return url from environment variables&#39;, async () =&gt; {
  5.         const result = await GET();
  6.         const { name } = await result.json();
  8.         expect(name).toEqual(&#39;test&#39;);
  9.     });
  10. });

But then an error is thrown:

  1.  FAIL  src/app/api/name/route.spec.ts
  2.   ● Test suite failed to run
  4.     ReferenceError: Response is not defined
  6.        9 | }
  7.       10 |
  9.       at Object.Response (node_modules/next/src/server/web/spec-extension/response.ts:29:51)
  10.       at Object.&lt;anonymous&gt; (node_modules/next/dist/server/web/exports/next-response.js:12:19)
  11.       at Object.&lt;anonymous&gt; (src/api/name/route.ts:11:62)
  12.       at Object.&lt;anonymous&gt; (src/api/name/route.spec.ts:5:16)

I tried to follow some instructions on testing NextJS API routes, but they're all based on the Pages Router.

How can I properly test this?

答案1

得分: 1

我已找到解决方案。测试未能正常工作，因为我的jest配置将'testEnvironment'设置为'jest-environment-jsdom'。

在.spec.ts文件的顶部添加以下内容后，初始测试设置确实有效：

  1. /**
  2.  * @jest-environment node
  3.  */
英文:

I have found the solution. The test didn't work, since my jest configuration sets 'testEnvironment' to 'jest-environment-jsdom'.

The initial test setup does work after adding the following to the top of the .spec.ts file:

  1. /**
  2.  * @jest-environment node
  3.  */

huangapple
  • 本文由 发表于 2023年6月1日 15:06:15
  • 转载请务必保留本文链接：https://go.coder-hub.com/76379428.html
  • jestjs
  • next.js
  • reactjs
  • ts-jest
  • typescript
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