130 lines
2.9 KiB
JavaScript
130 lines
2.9 KiB
JavaScript
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'use strict';
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const request = require('supertest');
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const assert = require('assert');
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const Koa = require('../..');
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describe('app.use(fn)', () => {
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it('should compose middleware', done => {
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const app = new Koa();
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const calls = [];
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app.use((ctx, next) => {
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calls.push(1);
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return next().then(() => {
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calls.push(6);
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});
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});
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app.use((ctx, next) => {
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calls.push(2);
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return next().then(() => {
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calls.push(5);
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});
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});
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app.use((ctx, next) => {
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calls.push(3);
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return next().then(() => {
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calls.push(4);
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});
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});
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const server = app.listen();
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request(server)
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.get('/')
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.expect(404)
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.end(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 compose mixed middleware', done => {
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process.once('deprecation', () => {}); // silence deprecation message
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const app = new Koa();
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const calls = [];
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app.use((ctx, next) => {
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calls.push(1);
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return next().then(() => {
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calls.push(6);
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});
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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((ctx, next) => {
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calls.push(3);
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return next().then(() => {
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calls.push(4);
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});
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});
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const server = app.listen();
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request(server)
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.get('/')
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.expect(404)
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.end(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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// https://github.com/koajs/koa/pull/530#issuecomment-148138051
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it('should catch thrown errors in non-async functions', done => {
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const app = new Koa();
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app.use(ctx => ctx.throw('Not Found', 404));
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request(app.listen())
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.get('/')
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.expect(404)
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.end(done);
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});
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it('should accept both generator and function middleware', done => {
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process.once('deprecation', () => {}); // silence deprecation message
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const app = new Koa();
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app.use((ctx, next) => { return next(); });
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app.use(function *(next){ this.body = 'generator'; });
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request(app.listen())
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.get('/')
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.expect(200)
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.expect('generator', done);
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});
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it('should throw error for non function', () => {
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const app = new Koa();
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[null, undefined, 0, false, 'not a function'].forEach(v => (() => app.use(v)).should.throw('middleware must be a function!'));
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});
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it('should output deprecation message for generator functions', done => {
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process.once('deprecation', message => {
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assert(/Support for generators will been removed/.test(message));
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done();
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});
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const app = new Koa();
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app.use(function *(){});
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});
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it('should throw error for non function', () => {
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const app = new Koa();
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(() => app.use('not a function')).should.throw('middleware must be a function!');
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});
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});
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