public void MarkAsDelivered_ShouldRemovePackageFromEmployeeCollection()
        {
            var package = new Package { Id = 1, Status = PackageStatus.InDelivery };
            var employee = new Employee { Id = 1 };
            employee.Packages.Add(package);
            var mockContext = GetEmptyMockContext();
            mockContext.Setup(c => c.Packages).ReturnsDbSet(package);
            mockContext.Setup(c => c.Employees).ReturnsDbSet(employee);
            mockContext.Setup(m => m.PackageEvents).ReturnsDbSet(new List<PackageEvent>());

            var controller = new PackagesController(mockContext.Object, null);
            controller.MarkAsDelivered(package.Id);

            Assert.Equal(employee.Packages.Count, 0);
        }
        public void MarkAsDelivered_ShouldAddEventToPackageHistory()
        {
            var package = new Package { Id = 1, Status = PackageStatus.InDelivery };
            var employee = new Employee { Id = 1 };
            employee.Packages.Add(package);

            var mockSet = new Mock<IDbSet<PackageEvent>>();
            var mockContext = GetEmptyMockContext();
            mockContext.Setup(c => c.Packages).ReturnsDbSet(package);
            mockContext.Setup(c => c.Employees).ReturnsDbSet(employee);
            mockContext.Setup(c => c.PackageEvents).Returns(mockSet.Object);

            var controller = new PackagesController(mockContext.Object, null);
            controller.MarkAsDelivered(package.Id);

            mockSet.Verify(m => m.Add(It.Is((PackageEvent pe) => pe.Package.Id == package.Id &&
                                                                 pe.Employee.Id == employee.Id &&
                                                                 pe.EventType == PackageEventType.Delivered)));
        }