Setting the locals for an Express render() as the response body for testing purposes

gistfile1.js

/*
    // Route defined as:
    app.get('/test/login', function (req, res) {
        res.render('login/login', {something: 'here'});
    });
*/

var localsAsResponseEngine = function (pathName, locals, cb) {
    delete locals._locals;
    delete locals.settings;

    cb(null, locals);
};

describe("Auth Server Endpoints", function() {
    var app = require('../app');

    describe('Base Views', function() {
        it('Should respond with login form', function (done) {
            app.engine('html', localsAsResponseEngine);

            request(app)
                .get('/test/login')
                .expect(200)
                .end(function (req, res) {
                    var context = res.body;

                    expect(context).to.have.property('something');
                    expect(context.something).to.equal('here');

                    done();
                });
        });
    });
});