st/test/gzip-after-no-gzip-test.js

A module for serving static files. Does etags, caching, etc.

import zlib from 'node:zlib'
import { test } from './support/tap-shim.js'

global.options = {
  cachedHeader: true // inspect to see if something is served from cache
}

const { req, stExpect } = await import('./support/common.js')

test('does not gzip first response', (t) => {
  req('/test/st.js', { 'accept-encoding': 'none' }, (er, res, body) => {
    t.equal(res.statusCode, 200)
    t.notOk(res.headers['content-encoding'])
    t.notOk(res.headers['x-from-cache'])
    t.equal(body.toString(), stExpect)
    // response is delivered before cache is set, so we'll give it a tiny bit
    // of grace to close out on the server side before starting the next
    // test
    setTimeout(t.end, 100)
  })
})

test('gzips second response', (t) => {
  req('/test/st.js', { 'accept-encoding': 'gzip' }, (er, res, body) => {
    t.error(er, 'no error')

    t.equal(res.statusCode, 200)
    t.equal(res.headers['content-encoding'], 'gzip')
    t.equal(res.headers['x-from-cache'], 'true')

    t.ok(body, 'returned a body')
    t.not(body.toString(), stExpect, 'gzipped string')

    zlib.gunzip(body, (er, body) => {
      if (er) {
        throw er
      }
      t.equal(body.toString(), stExpect)
      t.end()
    })
  })
})