'use strict'

const { PassThrough } = require('stream')
const Busboy = require('../').default
const { test } = require('node:test')
const assert = require('node:assert')

test('BusboyFileStream emits limit', async (t) => {
  await new Promise((resolve, reject) => {
    const bigPayload = Buffer.alloc(20, 'a')
    const boundary = 'foo'
    const req = new PassThrough()
    req.headers = {
      'content-type': `multipart/form-data; boundary=${boundary}`
    }

    const bb = new Busboy({
      headers: req.headers,
      limits: { fileSize: 10 }
    })

    bb.on('file', (_fieldname, stream) => {
      stream.on('limit', () => {
        assert.ok(true, 'limit event emitted')
        resolve()
      })
      stream.resume()
    })

    req.pipe(bb)

    const delimiter = `--${boundary}`
    req.write(`${delimiter}\r\n`)
    req.write('Content-Disposition: form-data; name="file"; filename="a.txt"\r\n\r\n')
    req.write(bigPayload)
    req.write(`\r\n${delimiter}--\r\n`)
    req.end()
  })
})