using Xunit;

namespace ConsoleApp.Tests
{
    public class ProgramTests
    {
        [Fact(DisplayName = "AddSale correctly updates grandTotal")]
        public void AddSale_UpdatesGrandTotal()
        {
            Program.grandTotal = 0;

            Program.AddSale(10, 5);   // 50
            Assert.Equal(50, Program.grandTotal);

            Program.AddSale(20, 6);   // 120
            Assert.Equal(170, Program.grandTotal);

            Program.AddSale(15, 5);   // 75
            Assert.Equal(245, Program.grandTotal);
        }

        [Fact(DisplayName = "AddSale calculates saleTotal correctly without affecting other sales")]
        public void AddSale_CalculatesIndividually()
        {
            Program.grandTotal = 0;

            Program.AddSale(8, 3);    // 24
            Assert.Equal(24, Program.grandTotal);

            Program.AddSale(5, 2);    // 10
            Assert.Equal(34, Program.grandTotal);
        }
    }
}

ProgramTests.cs

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Udfordring: Scopes

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