using System;
using System.Collections.Generic;
using NUnit.Framework;
using CandyHouseBase.DataModels;
using CandyHouseBase.Exceptions;

namespace CandyHouseTests.DataModelsTests
{
    [TestFixture]
    public class OrderDataModelTests
    {
        [Test]
        public void Order_ShouldThrowException_WhenIdIsInvalid()
        {
            var orderDataModel = new OrderDataModel("", Guid.NewGuid().ToString(), DateTime.UtcNow,
                100, 5, new List<OrderItemDataModel>(), false);
            Assert.Throws<ValidationException>(orderDataModel.Validate);
        }

        [Test]
        public void Order_ShouldThrowException_WhenNoItemsInOrder()
        {
            var orderDataModel = new OrderDataModel(Guid.NewGuid().ToString(),
                Guid.NewGuid().ToString(), DateTime.UtcNow, 100, 5, new List<OrderItemDataModel>(), false);
            Assert.Throws<ValidationException>(orderDataModel.Validate);
        }

        [Test]
        public void Order_ShouldCreateSuccessfully_WithValidData()
        {
            var order = new OrderDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), DateTime.UtcNow, 200,
                10, new List<OrderItemDataModel>
                {
                    new OrderItemDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 2, 50)
                }, false);

            Assert.That(order.TotalAmount, Is.EqualTo(200));
            Assert.That(order.DiscountAmount, Is.EqualTo(10));
        }
    }
}