using System;
using System.Collections.Generic;
using System.Text;
using UnitTestSharp;
using Sunweaver.Commands.Abstracts;
using Sunweaver.Commands;
using Sunweaver.VM;

namespace Sunweaver.UnitTesting.Commands
{    
    public class decTests : TestFixture
    {
        BasePair bp = new dec();
        VirtualMachine VM;
        
        public override void TestSetup()
        {
            VM = new VirtualMachine();
        }
        
        public void Correct()
        {            
            VM.Memory[25] = 10;
            VM.Stack.Push(25);

            bp.Implementation(VM);

            CheckEqual((short)9, VM.Memory[25]);
        }
        
        public void NameTest()
        {
            CheckEqual("dec", bp.ToString());
        }
        
        public void NegativeMemloc()
        {            
            VM.Memory[25] = 10;
            VM.Stack.Push(-25);

            bp.Implementation(VM);

            CheckEqual((short)9, VM.Memory[25]);
        }
        
        public void OverflowMemloc()
        {            
            VM.Memory[25] = 10;
            VM.Stack.Push(10025);

            bp.Implementation(VM);

            CheckEqual((short)9, VM.Memory[25]);
        }

        public void OverflowValue()
        {
            VM.Memory[25] = -9999;
            VM.Stack.Push(25);

            bp.Implementation(VM);

            CheckEqual((short)0, VM.Memory[25]);
        }
    }
}