private void removeButton_Click(object sender, RoutedEventArgs e)
{
try
{
DataRowView selectedRow;
selectedRow = (DataRowView)this.ProductsDataGrid.SelectedItems[0];
bookCart.RemoveBook(user.UserID, selectedRow.Row.ItemArray[0].ToString());
dsBookCar = bookCart.loadCart(user.UserID);
this.DataContext = dsBookCar.Tables["Cart"];
}
catch (Exception ex)
{
}
}
public async Task AddRemoveUpdateClearBook()
{
var bookAsync1 = await new BookStoreHelper().SearchBooksAsync("title eq 'Mastering едц'");
var bookAsync2 = await new BookStoreHelper().SearchBooksAsync("author eq 'Cunning Bastard'");
var bookAsync3 = await new BookStoreHelper().SearchBooksAsync("title eq 'Generic Title'");
var book1 = bookAsync1.First();
var book2 = bookAsync2.First();
var book3 = bookAsync3.First();
var bookCartItem1 = new BookCartItem {
Book = book1, Quantity = 5
};
var bookCartItem2 = new BookCartItem {
Book = book2, Quantity = 2
};
var bookCartItem3 = new BookCartItem {
Book = book3, Quantity = 3
};
// Create book cart
var bookCart = new BookCart();
Assert.AreEqual(0, bookCart.BookCartItems.Count);
Assert.AreEqual(0, bookCart.TotalQuantity);
Assert.AreEqual(0, bookCart.TotalPrice);
// Add 1st book cart item to the cart
bookCart.AddBook(bookCartItem1);
Assert.AreEqual(1, bookCart.BookCartItems.Count);
Assert.AreEqual(5, bookCart.TotalQuantity);
Assert.AreEqual(3810, bookCart.TotalPrice);
// Add 2nd book cart item to the cart
bookCart.AddBook(bookCartItem2);
Assert.AreEqual(2, bookCart.BookCartItems.Count);
Assert.AreEqual(7, bookCart.TotalQuantity);
Assert.AreEqual(5808, bookCart.TotalPrice);
// Add 3rd book cart item to the cart
bookCart.AddBook(bookCartItem3);
Assert.AreEqual(3, bookCart.BookCartItems.Count);
Assert.AreEqual(10, bookCart.TotalQuantity);
Assert.AreEqual(Convert.ToDecimal(6364.5), bookCart.TotalPrice);
// Remove 2nd book cart item from the cart
bookCart.RemoveBook(bookCartItem2);
Assert.AreEqual(2, bookCart.BookCartItems.Count);
Assert.AreEqual(8, bookCart.TotalQuantity);
Assert.AreEqual(Convert.ToDecimal(4366.5), bookCart.TotalPrice);
// Update quantity of 2nd book cart item
bookCart.UpdateQuantity(bookCartItem2, 4);
Assert.AreEqual(2, bookCart.BookCartItems.Count);
Assert.AreEqual(8, bookCart.TotalQuantity);
Assert.AreEqual(Convert.ToDecimal(4366.5), bookCart.TotalPrice);
// Update quantity of 1st book cart item
bookCart.UpdateQuantity(bookCartItem1, 1);
Assert.AreEqual(2, bookCart.BookCartItems.Count);
Assert.AreEqual(4, bookCart.TotalQuantity);
Assert.AreEqual(Convert.ToDecimal(1318.5), bookCart.TotalPrice);
// Empty the cart
bookCart.Clear();
Assert.AreEqual(0, bookCart.BookCartItems.Count);
Assert.AreEqual(0, bookCart.TotalQuantity);
Assert.AreEqual(0, bookCart.TotalPrice);
}