AppRoutesError.mjs

'use strict'

import { describe, it } from 'node:test'
import express from '../lib/express.js'
import assert from 'node:assert'
import request from 'supertest'

describe('app', () => {
  describe('.VERB()', () => {
    it('should not get invoked without error handler on error', (t, done) => {
      const app = express()

      app.use((req, res, next) => {
        next(new Error('boom!'))
      })

      app.get('/bar', (req, res) => {
        res.send('hello, world!')
      })

      request(app)
      .post('/bar')
      .expect(500, /Error: boom!/, done)
    })

    it('should only call an error handling routing callback when an error is propagated', (t, done) => {
      const app = express()

      let a = false
      let b = false
      let c = false
      let d = false

      app.get('/', (req, res, next) => {
        next(new Error('fabricated error'))
      }, (req, res, next) => {
        a = true
        next()
      }, (err, req, res, next) => {
        b = true
        assert.strictEqual(err.message, 'fabricated error')
        next(err)
      }, (err, req, res, next) => {
        c = true
        assert.strictEqual(err.message, 'fabricated error')
        next()
      }, (err, req, res, next) => {
        d = true
        next()
      }, (req, res) => {
        assert.ok(!a)
        assert.ok(b)
        assert.ok(c)
        assert.ok(!d)
        res.sendStatus(204)
      })

      request(app)
      .get('/')
      .expect(204, done)
    })
  })
})