singlestore-go-bookstore

order_test.go

func TestUpdateOrder(t *testing.T) {
	ResetOrderTable()
	ResetBookTable()
	// Arrange
	gatsby, _ := CreateBook(model.Book{
		Title:  "The Great Gatsby",
		Author: "F. Scott Fitzgerald",
		Price:  29.99,
		Genre:  "Fiction",
	})
	order, _ := CreateOrder(model.Order{
		Items: []model.OrderItem{
			{
				BookID:   gatsby.ID,
				Quantity: 2,
			},
		},
	})
	t.Run("Success", func(t *testing.T) {
		// Act
		order.Items[0].Quantity = 3
		updatedOrder, _ := UpdateOrder(order)
		// Assert
		if updatedOrder.Total != gatsby.Price*3 {
			t.Errorf("Expected order total to be %f, got %f", gatsby.Price*2, updatedOrder.Total)
		}
	})
	t.Run("InvalidQuantity", func(t *testing.T) {
		// Act
		order.Items[0].Quantity = 0
		_, err := UpdateOrder(order)
		// Assert
		if err == nil {
			t.Errorf("Expected error, got nil")
		}
	})
	t.Run("Book Not Found", func(t *testing.T) {
		// Act
		order.Items[0].BookID = 999
		order.Items[0].Quantity = 2
		_, err := UpdateOrder(order)
		// Assert
		if err == nil {
			t.Errorf("Expected error, got nil")
		}
	})
	t.Run("EmptyItems", func(t *testing.T) {
		// Act
		order.Items = []model.OrderItem{}
		_, err := UpdateOrder(order)
		// Assert
		if err == nil {
			t.Errorf("Expected error, got nil")
		}
	})
}