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'use strict'
const Koa = require('koa')
const supertest = require('supertest')
const c2k = require('./index')
const assert = require('assert')
describe('koa-connect', () => {
let app
beforeEach(() => {
app = new Koa()
app.use((ctx, next) => {
ctx.status = 404
ctx.body = 'Original'
return next()
})
})
it('works with a single noop Connect middleware', (done) => {
function noop(req, res, next) { next() }
app.use(c2k(noop))
supertest(app.callback())
.get('/')
.expect('Original')
.end(done)
})
it('works with two noop Connect middleware', (done) => {
function noop(req, res, next) { next() }
app.use(c2k(noop))
app.use(c2k(noop))
supertest(app.callback())
.get('/')
.expect('Original')
.end(done)
})
it('passes correctly to downstream Koa middlewares', (done) => {
function noop(req, res, next) { next() }
function goodStatusSetter(ctx) { ctx.status = 200 }
app.use(c2k(noop))
app.use(goodStatusSetter)
supertest(app.callback())
.get('/')
.expect(200)
.end(done)
})
it('bubbles back to earlier middleware', (done) => {
let callOne = false
let callTwo = false
app.use((ctx, next) => {
return next()
.then(() => {
callTwo = true
})
})
app.use(c2k((req, res) => {
res.statusCode = 200
callOne = true
}))
supertest(app.callback())
.get('/')
.expect(200)
.then(() => {
assert(callOne === true, 'Second middleware never called')
assert(callTwo === true, 'Never bubbled back to first middleware')
done()
})
})
it('receives errors from Connect middleware', (done) => {
app.use((ctx, next) => {
next().catch((err) => ctx.status = 505)
})
app.use(c2k((req, res, next) => {
next(new Error('How Connect does error handling'))
}))
app.use((ctx) => {
// Fail the test if this is reached
done(new Error('Improper error handling'))
})
supertest(app.callback())
.get('/')
.expect(505)
.end(done)
})
it('Setting the body or status in Koa middlewares does not do anything if res.end was used in a Connect middleware', (done) => {
const message = 'The message that makes it'
app.use((ctx, next) => {
next()
.then(() => {
if ( ctx.status !== 200 ) {
done(new Error('Never reached connect middleware'))
}
// These calls won't end up doing anything
ctx.status = 500
ctx.body = 'A story already written'
})
})
app.use(c2k((req, res) => {
res.statusCode = 200
res.setHeader('Content-Length', message.length)
res.end(message)
}))
supertest(app.callback())
.get('/')
.expect(200)
.expect(message)
.end(done)
})
})
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