Promise testing

multiplePromisesSpec.js

var customerService, deferredCustomer, sampleCustomer,
  productService, deferredProduct, sampleProduct;
 
beforeEach(function () {
  
  sampleCustomer = {name:'Bob'};
  customerService = { get:sinon.stub() };
  
  productService = { get:sinon.stub() };
  sampleProduct = { type: 'Product'}
  
  module(function ($provide) {
    $provide.value('customer', customerService);
    $provide.value('product', productService);
  });
   
  inject(function (_$q_, _$rootScope_) {
      $rootScope = _$rootScope_;
      deferredCustomer = _$q_.defer();
      deferredProduct = _$q_.defer();
  });
  
});
 
it('should resolve multiple promises', function () {
 
  given(function () {
    customerService.get.returns(deferredCustomer.promise);
    productService.get.withArgs(user: 'Bob').returns(deferredProduct.promise);
  });
  
  when(function () {
    // invoke code under test
    deferredCustomer.resolve(sampleCustomer);
    deferredProduct.resolve(sampleProduct);
    $rootScope.$digest(); // this will resolve both of the promises at the same time
  });
  
});

singlePromiseSpec.js

var customerService, deferredCustomer, sampleCustomer;

beforeEach(function () {
  
  sampleCustomer = {name:'Bob'};
  customerService = { get:sinon.stub() };
  
  module(function ($provide) {
    $provide.value('customer', customerService);
  });
   
  inject(function (_$q_, _$rootScope_) {
      $rootScope = _$rootScope_;
      deferredCustomer = _$q_.defer();
  });
  
});

it('should resolve promise', function () {

  given(function () {
    customerService.get.returns(deferredCustomer.promise);
  });
  
  when(function () {
    // invoke code under test
    deferredCustomer.resolve(sampleCustomer);
    $rootScope.$digest();
  });
  
});