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

namespace Sunweaver.UnitTests.Commands.Abstracts
{
    
    public class BinaryBooleanOperationTests : TestFixture
    {
        class BinaryBooleanOperationTester : BinaryBooleanLogic
        {
            public bool A = false, B = false;
            public override void Operation(bool a, bool b)
            {
                A = a;
                B = b;
            }

            public override void CompileOperation(
                System.Reflection.Emit.ILGenerator il,
                Sunweaver.DataPrototypes.Locals locals)
            {
                //Pass
            }
        }

        
        public override void TestSetup()
        {
            VM = new Sunweaver.DataPrototypes.VirtualMachine();
        }

        BinaryBooleanOperationTester bp = new BinaryBooleanOperationTester();
        Sunweaver.DataPrototypes.VirtualMachine VM;

        
        public void DecreasesStackDepthBy2()
        {
            
            CheckEqual((long)0, VM.BoolStack.Count());

            VM.BoolStack.Push(false);
            VM.BoolStack.Push(false);
            VM.BoolStack.Push(false);

            bp.Implementation(VM);

            CheckEqual((long)1, VM.BoolStack.Count());
        }

        
        public void FizzlesWhenEmpty()
        {
            
            CheckEqual((long)0, VM.BoolStack.Count());

            bp.A = false;
            bp.B = false;

            bp.Implementation(VM);

            CheckEqual((long)0, VM.BoolStack.Count());
            CheckFalse( bp.A);
            CheckFalse( bp.B);
        }

        
        public void FizzlesWhenAlmostEmpty()
        {
            
            CheckEqual((long)0, VM.BoolStack.Count());

            VM.BoolStack.Push(false);

            bp.A = true;
            bp.B = true;

            bp.Implementation(VM);

            CheckEqual((long)1, VM.BoolStack.Count());
            CheckFalse( VM.BoolStack.Pop());
            CheckTrue( bp.A);
            CheckTrue( bp.B);
        }

        
        public void PullsStackValuesInRightOrderAndCorrectly()
        {
            
            CheckEqual((long)0, VM.BoolStack.Count());

            VM.BoolStack.Push(false);
            VM.BoolStack.Push(true);

            bp.Implementation(VM);

            CheckFalse( bp.A);
            CheckTrue( bp.B);
        }

    }
}