Async Jasmine test

async.spec.js

describe("Async Jasmine test", function () {

    beforeEach(function () {
        this.Model = Backbone.Model;
        this.server = sinon.fakeServer.create();
        this.server.respondWith(
            'GET',
            '/api/model/12345',
            [
                200,
                {'Content-Type': 'application/json'},
                JSON.stringify({
                    name: 'NAME OF MODEL'
                })
            ]
        );
    });

    afterEach(function () {
        this.Model = null;
        this.server.restore();
    });

    it("should fetch 12345 from web service /api/model", function () {
        var model, promise;

        runs(function () {
            model = new this.Model(null, {
                id : '12345'
            });
            promise = model.fetch();
            this.server.respond();
        });

        waitsFor(function () {
            return promise.isResolved() || model.get('name') !== null;
        }, 5000);

        runs(function () {
            expect(this.server.requests.length).toEqual(1);
            expect(this.server.requests[0].method).toEqual('GET');
            expect(_.isEmpty(model.attributes)).toBeFalsy();
            expect(this.server.requests[0].url).toEqual('/api/model/12345');
            expect(model.get('name')).toMatch('NAME OF MODEL');
        });

    });

});