singlestore-go-bookstore TestCreateOrder

order_test.go

func TestCreateOrder(t *testing.T) {
	ResetOrderTable()
	ResetBookTable()
	// Arrange
	gatsby, _ := CreateBook(model.Book{
		Title:  "The Great Gatsby",
		Author: "F. Scott Fitzgerald",
		Price:  29.99,
		Genre:  "Fiction",
	})
	t.Run("Success", func(t *testing.T) {
		// Act
		order, _ := CreateOrder(model.Order{
			Items: []model.OrderItem{
				{
					BookID:   gatsby.ID,
					Quantity: 2,
				},
			},
		})
		// Assert
		if order.ID == 0 {
			t.Errorf("Expected order ID to be non-zero, got %d", order.ID)
		}
		if order.Items[0].BookID != gatsby.ID {
			t.Errorf("Expected order item book ID to be %d, got %d", gatsby.ID, order.Items[0].BookID)
		} else if order.Items[0].Book.Title != gatsby.Title {
			t.Errorf("Expected order item book title to be %s, got %s", gatsby.Title, order.Items[0].Book.Title)
		} else if order.Total != gatsby.Price*2 {
			t.Errorf("Expected order total to be %f, got %f", gatsby.Price, order.Total)
		} else if order.CreatedAt.IsZero() {
			t.Errorf("Expected order created at to be non-zero, got %v", order.CreatedAt)
		}
	})
	t.Run("Book Not Found", func(t *testing.T) {
		// Act
		_, err := CreateOrder(model.Order{
			Items: []model.OrderItem{
				{
					BookID:   999,
					Quantity: 2,
				},
			},
		})
		// Assert
		if err == nil {
			t.Errorf("Expected error, got nil")
		}
	})
	t.Run("InvalidQuantity", func(t *testing.T) {
		// Act
		_, err := CreateOrder(model.Order{
			Items: []model.OrderItem{
				{
					BookID:   gatsby.ID,
					Quantity: 0,
				},
			},
		})
		// Assert
		if err == nil {
			t.Errorf("Expected error, got nil")
		}
	})
	t.Run("EmptyItems", func(t *testing.T) {
		// Act
		_, err := CreateOrder(model.Order{
			Items: []model.OrderItem{},
		})
		// Assert
		if err == nil {
			t.Errorf("Expected error, got nil")
		}
	})
}