KoaMongoBlog test update existing post

updateExisitingPost.spec.js

var app = require('./app.js');
var co = require('co');
var should = require('should');
var request = require('supertest').agent(app.listen());
var posts = require('./blogRoutes.js').posts;

describe('Blog with mongo:', function(){
	var removeAll = function(done){
		co(function *(){
			yield posts.remove({});
		})(done);
	};

	beforeEach(function (done) {
		removeAll(done);
	});

	afterEach(function (done) {
		removeAll(done);
	});

	var test_post  = { title: 'A nice title', body : 'Short body. Yeah!'};

	it('updates an existing post', function(done){
		co(function *(){
			var post = yield posts.insert(test_post);
			
			var postUrl = '/post/' + post._id;
			request
				.post(postUrl)
				.send({title: 'Updated title', body: 'Updated body'})
				.expect(302)
				.expect('location', postUrl);
	    })(done);
	});
	
});