example test with constructor arguments

ThingViewModel.test.js

describe('when creating a ThingViewModel', function () {
  var ctorArgs;
  beforeEach(function(){
    ctorArgs = {
      ThingApi: {
        getThings: function(){}
      },
      ThingUtility: {}
    }  
  });
  
  it('should return an object', function () {
    var thingViewModel = new ThingViewModel(ctorArgs);

    expect(typeof thingViewModel).toBe('object');        
  });
});