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'use strict';
const Koa = require('koa');
const supertest = require('supertest');
const c2k = require('..');
describe('koa-connect', () => {
let app;
beforeEach(() => {
app = new Koa();
app.use( function * (next) {
this.status = 404;
this.body = 'Original';
yield next;
})
});
it('works with a single noop Connect middleware', (done) => {
app.use(c2k((req, res, next) => {
next()
}));
supertest(app.callback())
.get('/')
.expect('Original')
.end(done);
});
it('works with two noop Connect middleware', (done) => {
app.use(c2k((req, res, next) => next()));
app.use(c2k((req, res, next) => next()));
supertest(app.callback())
.get('/')
.expect('Original')
.end(done);
});
it('passes correctly to downstream Koa middlewares', (done) => {
app.use(c2k((req, res, next) => next()));
app.use(function * () { this.status = 200; });
supertest(app.callback())
.get('/')
.expect(200)
.end(done);
});
it('bubbles back to earlier middleware', (done) => {
app.use(function * (next) {
yield next;
// Ensures that the following middleware is reached
if ( this.status !== 200 ) {
done(new Error('Never reached connect middleware'))
}
this.status = 201;
});
app.use(c2k((req, res) => res.statusCode = 200 ));
supertest(app.callback())
.get('/')
.expect(201)
.end(done);
});
it('receives errors from Connect middleware', (done) => {
app.use(function * (next) {
try {
yield next;
} catch (err) {
this.status = 500;
}
})
app.use(c2k((req, res, next) => {
next(new Error('How Connect does error handling'));
}));
app.use(function * () {
// Fail the test if this is reached
done(new Error('Improper error handling'))
})
supertest(app.callback())
.get('/')
.expect(500)
.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(function * (next) {
yield next;
if ( this.status !== 200 ) {
done(new Error('Never reached connect middleware'));
}
// These calls won't end up doing anything
// And will cause Koa to log a "Can't set headers after they are sent" error
this.status = 500;
this.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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