public void GetAllAvailable_ForSpecifiedVehicle()
        {
            var vehicleModel = new VehicleModel {
                Id = 1
            };
            var vehicles = new List <Vehicle>
            {
                new Vehicle {
                    Id = 1, RegistrationNumber = "1", VehicleModel = vehicleModel
                },
                new Vehicle {
                    Id = 2, RegistrationNumber = "2", VehicleModel = vehicleModel
                },
                new Vehicle {
                    Id = 3, RegistrationNumber = "3", VehicleModel = vehicleModel
                },
            };
            var employees = new List <Employee>
            {
                new Employee {
                    FirstName = "J.D", LastName = "Kyle", Vehicle = vehicles[1]
                },
                new Employee {
                    FirstName = "Ted", LastName = "Mosby", Vehicle = vehicles[0]
                },
            };
            var mockContext = new Mock <InstantDeliveryContext>();

            mockContext.Setup(c => c.Employees).ReturnsDbSet(employees);
            mockContext.Setup(c => c.Vehicles).ReturnsDbSet(vehicles);
            mockContext.Setup(c => c.VehicleModels).ReturnsDbSet(vehicleModel);

            var controller = new VehiclesController(mockContext.Object);

            var result = controller.GetAllAvailable(new PageQuery {
                PageSize = 10, PageIndex = 1
            })
                         as OkNegotiatedContentResult <PagedResult <VehicleDto> >;

            Assert.Equal(result?.Content.PageCollection.Count, 1);
        }