Angularjs error Unknown provider: $ scopeProvider <- $ scope <- user

I am getting the error

Unknown provider: $ userProvider <- $ user "

With the following code:

var app = angular.module('test', []);

app.factory("user", function($scope, $http) {
   var usr = {};
   usr.getAllLists = function(){
       return "test";
   }
   return usr;  
});

cart.controller("MyController", ["$scope", "$http", "$user", 
    function ($scope, $http, user){

        $scope.initialize = function(){
            $scope.lists = user.getAllLists();
        }

    }
]);

      

        
        
        
      

    

Do you see the error?