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'use strict';
const request = require('../support/client');
const express = require('../support/express');
const app = express();
const fs = require('fs');
const bodyParser = require('body-parser');
let http = require('http');
const zlib = require('zlib');
const { pipeline } = require('stream');
if (process.env.HTTP2_TEST) {
http = require('http2');
}
app.use(bodyParser.json());
app.get('/', (request_, res) => {
fs.createReadStream('test/node/fixtures/user.json').pipe(res);
});
app.get('/gzip', (request_, res) => {
res.writeHead(200, {
'Content-Encoding': 'gzip'
});
fs.createReadStream('test/node/fixtures/user.json').pipe(new zlib.createGzip()).pipe(res);
});
app.get('/redirect', (request_, res) => {
res.set('Location', '/').sendStatus(302);
});
app.get('/badRedirectNoLocation', (request_, res) => {
res.set('Location', '').sendStatus(302);
});
app.post('/', (request_, res) => {
if (process.env.HTTP2_TEST) {
// body-parser does not support http2 yet.
// This section can be remove after body-parser supporting http2.
res.set('content-type', 'application/json');
request_.pipe(res);
} else {
res.send(request_.body);
}
});
let base = 'http://localhost';
let server;
before(function listen(done) {
server = http.createServer(app);
server.listen(0, function listening() {
base += `:${server.address().port}`;
done();
});
});
describe('request pipe', () => {
const destinationPath = 'test/node/fixtures/tmp.json';
after(function removeTmpfile(done) {
fs.unlink(destinationPath, done);
});
it('should act as a writable stream', (done) => {
const request_ = request.post(base);
const stream = fs.createReadStream('test/node/fixtures/user.json');
request_.type('json');
request_.on('response', (res) => {
res.body.should.eql({ name: 'tobi' });
done();
});
stream.pipe(request_);
});
it('end() stops piping', (done) => {
const stream = fs.createWriteStream(destinationPath);
request.get(base).end((error, res) => {
try {
res.pipe(stream);
return done(new Error('Did not prevent nonsense pipe'));
} catch {
/* expected error */
}
done();
});
});
it('should act as a readable stream', (done) => {
const stream = fs.createWriteStream(destinationPath);
let responseCalled = false;
const request_ = request.get(base);
request_.type('json');
request_.on('response', (res) => {
res.status.should.eql(200);
responseCalled = true;
});
stream.on('finish', () => {
JSON.parse(fs.readFileSync(destinationPath)).should.eql({
name: 'tobi'
});
responseCalled.should.be.true();
done();
});
request_.pipe(stream);
});
it('should act as a readable stream with unzip', (done) => {
const stream = fs.createWriteStream(destinationPath);
let responseCalled = false;
const request_ = request.get(base + '/gzip');
request_.type('json');
request_.on('response', (res) => {
res.status.should.eql(200);
responseCalled = true;
});
stream.on('finish', () => {
JSON.parse(fs.readFileSync(destinationPath)).should.eql({
name: 'tobi'
});
responseCalled.should.be.true();
done();
});
request_.pipe(stream);
});
it('should act as a readable stream with unzip and node.stream.pipeline', (done) => {
const stream = fs.createWriteStream(destinationPath);
let responseCalled = false;
const request_ = request.get(base + '/gzip');
request_.type('json');
request_.on('response', (res) => {
res.status.should.eql(200);
responseCalled = true;
});
// pipeline automatically ends streams by default. Since unzipping introduces a transform stream that is
// not monitored by pipeline, we need to make sure request_ does not emit 'end' until the unzip step
// has finished writing data. Otherwise, we'll either end up with truncated data or a 'write after end' error.
pipeline(request_, stream, function (err) {
(!!err).should.be.false();
responseCalled.should.be.true();
JSON.parse(fs.readFileSync(destinationPath)).should.eql({
name: 'tobi'
});
done();
});
});
it('should follow redirects', (done) => {
const stream = fs.createWriteStream(destinationPath);
let responseCalled = false;
const request_ = request.get(base + '/redirect');
request_.type('json');
request_.on('response', (res) => {
res.status.should.eql(200);
responseCalled = true;
});
stream.on('finish', () => {
JSON.parse(fs.readFileSync(destinationPath)).should.eql({
name: 'tobi'
});
responseCalled.should.be.true();
done();
});
request_.pipe(stream);
});
it('should not throw on bad redirects', (done) => {
const stream = fs.createWriteStream(destinationPath);
let responseCalled = false;
let errorCalled = false;
const request_ = request.get(base + '/badRedirectNoLocation');
request_.type('json');
request_.on('response', (res) => {
responseCalled = true;
});
request_.on('error', (error) => {
error.message.should.eql('No location header for redirect');
errorCalled = true;
stream.end();
});
stream.on('finish', () => {
responseCalled.should.be.false();
errorCalled.should.be.true();
done();
});
request_.pipe(stream);
});
});
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