function MockXHR(){
  this.expectations = {
    'GET': {},
    'POST': {},
    'DELETE': {}
  };
  this.queue = [];
}
MockXHR.prototype = {
  method: function(verb, url, data, callback) {
    if (verb == 'POST')
      url += '|' + angular.toJson(data);
    var response = this.expectations[verb][url];
    if (!response)
      throw "No expectation for " + verb + " on '" + url + "'.";
    this.queue.push(function(){
      callback(response);
    });
  },

  expectGET: function(url) {
    var self = this;
    return {
      respond: function(response){
        self.expectations.GET[url] = response;
      }
    };
  },

  expectDELETE: function(url) {
    var self = this;
    return {
      respond: function(response){
        self.expectations.DELETE[url] = response;
      }
    };
  },

  expectPOST: function(url) {
    var self = this;
    return {
      data: function(data){
        return {
          respond: function(response){
            self.expectations.POST[url + '|' + angular.toJson(data)] = response;
          }
        };
      }
    };
  },

  flush: function(){
    while(this.queue.length) {
      this.queue.shift()();
    }
  }
};

describe("resource", function() {
  var xhr, resource, CreditCard, callback;

  beforeEach(function(){
    xhr = new MockXHR();
    resource = new ResourceFactory(xhr);
    CreditCard = resource.route('/CreditCard/:id:verb', {id:'id.key'}, {
      charge:{
        method:'POST',
        params:{verb:'!charge'}
      }
    });
    callback = jasmine.createSpy();
  });

  it("should build resource", function(){
    expect(typeof CreditCard).toBe('function');
    expect(typeof CreditCard.get).toBe('function');
    expect(typeof CreditCard.save).toBe('function');
    expect(typeof CreditCard.remove).toBe('function');
    expect(typeof CreditCard['delete']).toBe('function');
    expect(typeof CreditCard.query).toBe('function');
  });

  it("should create resource", function(){
    xhr.expectPOST('/CreditCard').data({name:'misko'}).respond({id:123, name:'misko'});

    var cc = CreditCard.save({name:'misko'}, callback);
    nakedExpect(cc).toEqual({name:'misko'});
    expect(callback).wasNotCalled();
    xhr.flush();
    nakedExpect(cc).toEqual({id:123, name:'misko'});
    expect(callback).wasCalledWith(cc);
  });

  it("should read resource", function(){
    xhr.expectGET("/CreditCard/123").respond({id:123, number:'9876'});
    var cc = CreditCard.get({id:123}, callback);
    expect(cc instanceof CreditCard).toBeTruthy();
    nakedExpect(cc).toEqual({});
    expect(callback).wasNotCalled();
    xhr.flush();
    nakedExpect(cc).toEqual({id:123, number:'9876'});
    expect(callback).wasCalledWith(cc);
  });

  it("should update resource", function(){
    xhr.expectPOST('/CreditCard/123').data({id:{key:123}, name:'misko'}).respond({id:{key:123}, name:'rama'});

    var cc = CreditCard.save({id:{key:123}, name:'misko'}, callback);
    nakedExpect(cc).toEqual({id:{key:123}, name:'misko'});
    expect(callback).wasNotCalled();
    xhr.flush();
    nakedExpect(cc).toEqual({id:{key:123}, name:'rama'});
    expect(callback).wasCalledWith(cc);
  });

  it("should query resource", function(){
    xhr.expectGET("/CreditCard?key=value").respond([{id:1}, {id:2}]);

    var ccs = CreditCard.query({key:'value'}, callback);
    expect(ccs).toEqual([]);
    expect(callback).wasNotCalled();
    xhr.flush();
    nakedExpect(ccs).toEqual([{id:1}, {id:2}]);
    expect(callback).wasCalledWith(ccs);
  });

  it('should delete resource', function(){
    xhr.expectDELETE("/CreditCard/123").respond({});

    CreditCard.remove({id:123}, callback);
    expect(callback).wasNotCalled();
    xhr.flush();
    nakedExpect(callback.mostRecentCall.args).toEqual([{}]);
  });

  it('should post charge verb', function(){
    xhr.expectPOST('/CreditCard/123!charge?amount=10').data({auth:'abc'}).respond({success:'ok'});

    CreditCard.charge({id:123, amount:10},{auth:'abc'}, callback);
  });

  it('should create on save', function(){
    xhr.expectPOST('/CreditCard').data({name:'misko'}).respond({id:123});
    var cc = new CreditCard();
    expect(cc.$get).not.toBeDefined();
    expect(cc.$query).not.toBeDefined();
    expect(cc.$remove).toBeDefined();
    expect(cc.$save).toBeDefined();

    cc.name = 'misko';
    cc.$save(callback);
    nakedExpect(cc).toEqual({name:'misko'});
    xhr.flush();
    nakedExpect(cc).toEqual({id:123});
    expect(callback).wasCalledWith(cc);
  });


});