Jest Test failing for API endpoint with 404 error - vue.js

Question

I am trying to test my serverMiddleware in nuxt which has API routes
It has a single route /api/v1/test which returns a json true
My api/index.js file
import express from 'express'
const app = express()
app.use(express.json())
app.use(express.urlencoded({ extended: true }))
app.get('/test', (req, res) => res.json(true))
export default {
path: '/api/v1',
handler: app,
}
Here is my api.spec.js file which contains the test returning 404
If I test my route / it returns a 200
My test/backend/api.spec.js file
import { resolve } from 'path'
import { Nuxt, Builder } from 'nuxt'
import supertest from 'supertest'
// We keep the nuxt and server instance
// So we can close them at the end of the test
let nuxt = null
// Init Nuxt.js and create a server listening on localhost:4000
beforeAll(async () => {
const config = {
dev: process.env.NODE_ENV !== 'production',
rootDir: resolve(__dirname, '../', '../'),
mode: 'universal',
}
nuxt = new Nuxt(config)
await new Builder(nuxt).build()
await nuxt.server.listen(3000, 'localhost')
}, 30000)
// Close server and ask nuxt to stop listening to file changes
afterAll(() => {
nuxt.close()
})
describe('GET /api/v1/test', () => {
test('returns status code 200', (done) => {
supertest(nuxt.server.app).get('/api/v1/test').expect(200, done)
})
})
My jest.config.js file
module.exports = {
moduleNameMapper: {
'^#/(.*)$': '<rootDir>/$1',
'^~/(.*)$': '<rootDir>/$1',
'^vue$': 'vue/dist/vue.common.js',
},
moduleFileExtensions: ['js', 'vue', 'json'],
transform: {
'^.+\\.js$': 'babel-jest',
'.*\\.(vue)$': 'vue-jest',
},
collectCoverage: true,
collectCoverageFrom: [
'<rootDir>/components/**/*.vue',
'<rootDir>/pages/**/*.vue',
],
}
Can someone kindly suggest why the test is failing

Answer 1

In my case, it was because of the jest configuration.
my jest.config.js
testEnvironment: 'jsdom'
api.test(spec).file requires node environment.
I didn't modify it. Instead, I modified the api.test.js file.
I just added the comment code below at the head of the file.
solved) my api.test.js
/**
* #jest-environment node
*/
link : https://jestjs.io/docs/configuration#testenvironment-string