632 lines
13 KiB
JavaScript
632 lines
13 KiB
JavaScript
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var request = require('supertest');
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var assert = require('assert');
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var http = require('http');
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var koa = require('..');
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var fs = require('fs');
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describe('app', function(){
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it('should handle socket errors', function(done){
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var app = koa();
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app.use(function *(next){
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// triggers this.socket.writable == false
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this.socket.emit('error', new Error('boom'));
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});
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app.on('error', function(err){
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err.message.should.equal('boom');
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done();
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});
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request(app.listen())
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.get('/')
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.end(function(){});
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})
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it('should not .writeHead when !socket.writable', function(done){
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var app = koa();
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app.use(function *(next){
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// set .writable to false
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this.socket.writable = false;
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this.status = 204;
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// throw if .writeHead or .end is called
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this.res.writeHead =
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this.res.end = function(){
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throw new Error('response sent');
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};
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})
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// hackish, but the response should occur in a single ticket
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setImmediate(done);
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request(app.listen())
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.get('/')
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.end(function(){});
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})
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})
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describe('app.toJSON()', function(){
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it('should work', function(){
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var app = koa();
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var obj = app.toJSON();
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obj.should.eql({
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outputErrors: false,
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subdomainOffset: 2,
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poweredBy: true,
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env: 'test'
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});
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})
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})
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describe('app.inspect()', function(){
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it('should work', function(){
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var app = koa();
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var util = require('util');
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var str = util.inspect(app);
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})
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})
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describe('app.use(fn)', function(){
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it('should compose middleware', function(done){
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var app = koa();
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var calls = [];
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app.use(function *(next){
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calls.push(1);
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yield next;
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calls.push(6);
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});
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app.use(function *(next){
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calls.push(2);
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yield next;
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calls.push(5);
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});
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app.use(function *(next){
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calls.push(3);
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yield next;
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calls.push(4);
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});
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var server = app.listen();
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request(server)
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.get('/')
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.end(function(err){
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if (err) return done(err);
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calls.should.eql([1,2,3,4,5,6]);
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done();
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});
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})
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it('should error when a non-generator function is passed', function(done){
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var app = koa();
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try {
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app.use(function(){});
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} catch (err) {
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err.message.should.equal('app.use() requires a generator function');
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done();
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}
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})
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})
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describe('app.respond', function(){
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describe('when this.respond === false', function(){
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it('should bypass app.respond', function(done){
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var app = koa();
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app.use(function *(){
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this.body = 'Hello';
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this.respond = false;
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var res = this.res;
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setImmediate(function(){
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res.setHeader('Content-Type', 'text/plain');
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res.end('lol');
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})
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})
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var server = app.listen();
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request(server)
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.get('/')
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.expect(200)
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.expect('lol')
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.end(done);
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})
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})
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describe('when HEAD is used', function(){
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it('should not respond with the body', function(done){
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var app = koa();
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app.use(function *(){
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this.body = 'Hello';
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});
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var server = app.listen();
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request(server)
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.head('/')
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.expect(200)
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.end(function(err, res){
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if (err) return done(err);
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res.should.have.header('Content-Length', '5');
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assert(0 == res.text.length);
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done();
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});
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})
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it('should respond with a 404 if no body was set', function(done){
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var app = koa();
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app.use(function *(){
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})
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var server = app.listen();
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request(server)
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.head('/')
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.expect(404, done);
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})
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it('should respond with a 200 if body = ""', function(done){
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var app = koa();
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app.use(function *(){
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this.body = '';
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})
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var server = app.listen();
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request(server)
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.head('/')
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.expect(200, done);
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})
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it('should not overwrite the content-type', function(done){
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var app = koa();
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app.use(function *(){
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this.status = 200;
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this.type = 'application/javascript';
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})
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var server = app.listen();
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request(server)
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.head('/')
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.expect('content-type', 'application/javascript')
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.expect(200, done);
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})
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})
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describe('when no middleware are present', function(){
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it('should 404', function(done){
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var app = koa();
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var server = app.listen();
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request(server)
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.get('/')
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.expect(404, done);
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})
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})
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describe('when res has already been written to', function(){
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it('should not cause an app error', function(done){
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var app = koa();
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app.use(function *(next){
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var res = this.res;
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res.setHeader("Content-Type", "text/html")
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res.status = 200;
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res.write('Hello');
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setTimeout(function(){
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res.end("Goodbye")
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}, 0);
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});
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var errorCaught = false;
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app.on('error', function(err){
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errorCaught = err;
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect(200)
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.end(function(err, res){
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if (err) return done(err);
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if (errorCaught) return done(errorCaught);
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done();
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});
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})
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it('should send the right body', function(done){
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var app = koa();
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app.use(function *(next){
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var res = this.res;
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res.setHeader("Content-Type", "text/html")
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res.status = 200;
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res.write('Hello');
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setTimeout(function(){
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res.end("Goodbye")
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}, 0);
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect(200)
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.expect('HelloGoodbye', done);
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})
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})
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describe('when .body is missing', function(){
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describe('with status=400', function(){
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it('should respond with the associated status message', function(done){
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var app = koa();
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app.use(function *(){
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this.status = 400;
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect(400)
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.expect('Bad Request', done);
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})
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})
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describe('with status=204', function(){
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it('should respond without a body', function(done){
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var app = koa();
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app.use(function *(){
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this.status = 204;
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})
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var server = app.listen();
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request(server)
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.get('/')
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.expect(204)
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.expect('')
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.end(function(err, res){
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if (err) return done(err);
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res.header.should.not.have.property('content-type');
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done();
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})
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})
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})
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describe('with status=205', function(){
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it('should respond without a body', function(done){
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var app = koa();
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app.use(function *(){
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this.status = 205;
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})
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var server = app.listen();
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request(server)
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.get('/')
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.expect(205)
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.expect('')
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.end(function(err, res){
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if (err) return done(err);
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res.header.should.not.have.property('content-type');
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done();
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})
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})
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})
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describe('with status=304', function(){
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it('should respond without a body', function(done){
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var app = koa();
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app.use(function *(){
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this.status = 304;
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})
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var server = app.listen();
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request(server)
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.get('/')
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.expect(304)
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.expect('')
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.end(function(err, res){
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if (err) return done(err);
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res.header.should.not.have.property('content-type');
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done();
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})
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})
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})
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})
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describe('when .body is a string', function(){
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it('should respond', function(done){
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var app = koa();
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app.use(function *(){
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this.body = 'Hello';
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect('Hello', done);
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})
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})
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describe('when .body is a Buffer', function(){
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it('should respond', function(done){
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var app = koa();
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app.use(function *(){
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this.body = new Buffer('Hello');
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect('Hello', done);
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})
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})
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describe('when .body is a Stream', function(){
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it('should respond', function(done){
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var app = koa();
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app.use(function *(){
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this.body = fs.createReadStream('package.json');
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this.set('Content-Type', 'application/json');
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect('Content-Type', 'application/json')
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.end(function(err, res){
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if (err) return done(err);
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var pkg = require('../package');
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res.body.should.eql(pkg);
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done();
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});
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})
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it('should handle errors', function(done){
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var app = koa();
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app.use(function *(){
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this.set('Content-Type', 'application/json');
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this.body = fs.createReadStream('does not exist');
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect('Content-Type', 'text/plain; charset=utf-8')
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.expect(404)
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.end(done);
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})
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})
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describe('when .body is an Object', function(){
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it('should respond with json', function(done){
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var app = koa();
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app.use(function *(){
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this.body = { hello: 'world' };
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect('Content-Type', 'application/json')
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.expect('{"hello":"world"}', done);
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})
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})
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describe('when an error occurs', function(){
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it('should emit "error" on the app', function(done){
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var app = koa();
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app.use(function *(){
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throw new Error('boom');
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});
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app.on('error', function(err){
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err.message.should.equal('boom');
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done();
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});
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request(app.listen())
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.get('/')
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.end(function(){});
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})
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describe('with an .expose property', function(){
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it('should expose the message', function(done){
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var app = koa();
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app.use(function *(){
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var err = new Error('sorry!');
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err.status = 403;
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err.expose = true;
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throw err;
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});
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request(app.listen())
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.get('/')
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.expect(403, 'sorry!')
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.end(done);
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})
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})
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describe('with a .status property', function(){
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it('should respond with .status', function(done){
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var app = koa();
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app.use(function *(){
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var err = new Error('s3 explodes');
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err.status = 403;
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throw err;
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});
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request(app.listen())
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.get('/')
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.expect(403, 'Forbidden')
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.end(done);
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})
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})
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it('should respond with 500', function(done){
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var app = koa();
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app.use(function *(){
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throw new Error('boom!');
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect(500, 'Internal Server Error')
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.end(done);
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})
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it('should be catchable', function(done){
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var app = koa();
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app.use(function *(next){
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try {
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yield next;
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this.body = 'Hello';
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} catch (err) {
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error = err;
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this.body = 'Got error';
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}
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});
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app.use(function *(next){
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throw new Error('boom!');
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this.body = 'Oh no';
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});
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var server = app.listen();
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request(server)
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.get('/')
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.expect(200, 'Got error')
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.end(done);
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})
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})
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})
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describe('app.context', function(){
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var app1 = koa();
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app1.context.message = 'hello';
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var app2 = koa();
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it('should merge properties', function(done){
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app1.use(function *(next){
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assert.equal(this.message, 'hello')
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this.status = 204
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});
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request(app1.listen())
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.get('/')
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.expect(204, done);
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})
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it('should not affect the original prototype', function(done){
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app2.use(function *(next){
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assert.equal(this.message, undefined)
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this.status = 204;
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});
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request(app2.listen())
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.get('/')
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.expect(204, done);
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})
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})
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describe('app.request', function(){
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var app1 = koa();
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app1.request.message = 'hello';
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var app2 = koa();
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it('should merge properties', function(done){
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app1.use(function *(next){
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assert.equal(this.request.message, 'hello')
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this.status = 204
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});
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request(app1.listen())
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.get('/')
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.expect(204, done);
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})
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it('should not affect the original prototype', function(done){
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app2.use(function *(next){
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assert.equal(this.request.message, undefined)
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this.status = 204;
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});
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request(app2.listen())
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.get('/')
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.expect(204, done);
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})
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})
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describe('app.response', function(){
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var app1 = koa();
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app1.response.message = 'hello';
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var app2 = koa();
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it('should merge properties', function(done){
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app1.use(function *(next){
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assert.equal(this.response.message, 'hello')
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this.status = 204
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});
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request(app1.listen())
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.get('/')
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.expect(204, done);
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})
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it('should not affect the original prototype', function(done){
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app2.use(function *(next){
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assert.equal(this.response.message, undefined)
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this.status = 204;
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});
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request(app2.listen())
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.get('/')
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.expect(204, done);
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})
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})
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