[TestMethod]
        [DataRow("Luxury Car", "Alice Johnson", 1500, "https://example.com/luxurycar.jpg", "https://example.com/luxurycar")]
        [DataRow("Luxury Car", "Alice Johnson", 1500.00, "https://example.com/luxurycar.jpg", "https://example.com/luxurycar")]
        [DataRow("Diamond Ring", "Bob Brown", 2000.00, "https://example.com/diamondring.jpg", "https://example.com/diamondring")]
        public void AddGift_ShouldRejectExpensiveGifts(string name, string reservedBy, decimal price, string imageUrl, string link)
        {
            // Arrange
            var gift = new Gift(name, reservedBy, price, imageUrl, link);

            // Act & Assert
            Assert.ThrowsException<ArgumentException>(() => Program.AddGift(gift), "Gift price cannot exceed $1,000.");
        }