public void CanSaveValidProductTest()
        {
            contextMoq = new Mock <IUnitOfWork>();
            EditProductViewModel vm = new EditProductViewModel(contextMoq.Object);

            vm.FormProduct = product;
            Assert.IsTrue(vm.CanSaveProduct());
        }
        public void CantSaveInvalidProductTest()
        {
            var InvalidProduct = new Product(0, "", 100, 200, null, null);

            contextMoq = new Mock <IUnitOfWork>();
            EditProductViewModel vm = new EditProductViewModel(contextMoq.Object);

            vm.FormProduct = InvalidProduct;
            Assert.IsFalse(vm.CanSaveProduct());
        }