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

namespace Sunweaver.UnitTesting.VM
{    
    public class StackTest : TestFixture
    {
        public void Basic()
        {
            var stack = new IntStack();
            stack.Push(599);
            stack.Push(699);
            CheckEqual(699, stack.Pop());
            CheckEqual(599, stack.Pop());
        }
        
        public void StackReturns0WhenEmpty()
        {
            var stack = new IntStack();
            CheckEqual(0, stack.Count);
            CheckEqual(0, stack.Pop());
        }

        public void StackCanHandleMax()
        {
            var stack = new IntStack();
            stack.Push(IntStack.Max);
            CheckEqual(IntStack.Max, stack.Pop());
        }

        public void StackCanHandleMin()
        {
            var stack = new IntStack();
            stack.Push(IntStack.Min);
            CheckEqual(IntStack.Min, stack.Pop());
        }

        public void MaxDouble_Roundtrip()
        {
            var stack = new IntStack();
            stack.Push(IntStack.Max);
            double intermediate = stack.Pop();
            long roundtrip = (long)intermediate;
            CheckEqual(roundtrip, IntStack.Max);
        }

        public void MinDouble_Roundtrip()
        {
            var stack = new IntStack();
            stack.Push(IntStack.Min);
            double intermediate = stack.Pop();
            long roundtrip = (long)intermediate;
            CheckEqual(roundtrip, IntStack.Min);
        }
    }
}