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 randTest : TestFixture
    {
        BasePair bp = new rand();
        VirtualMachine VM;
        
        public override void TestSetup()
        {
            VM = new VirtualMachine();
        }
        
        public void TestRandom()
        {            
            for (int i = 0; i < 100; i++)
            {
                VM.Stack.Push(10);
                bp.Implementation(VM);
                var result = VM.Stack.Pop();
                Check(result >= 1 && result <= 10);
            }
        }
        
        public void TestNegativeRandom()
        {
            for (int i = 0; i < 100; i++)
            {
                VM.Stack.Push(-10);
                bp.Implementation(VM);
                var result = VM.Stack.Pop();
                Check(result <= -1 && result >= -10);
            }
        }

        public void Test0()
        {
            for (int i = 0; i < 100; i++)
            {
                VM.Stack.Push(0);
                bp.Implementation(VM);
                var result = VM.Stack.Pop();
                CheckEqual(0, result);
            }
        }

        public void Test1()
        {
            for (int i = 0; i < 100; i++)
            {
                VM.Stack.Push(1);
                bp.Implementation(VM);
                var result = VM.Stack.Pop();
                CheckEqual(1, result);
            }
        }

        public void TestNeg1()
        {
            for (int i = 0; i < 100; i++)
            {
                VM.Stack.Push(-1);
                bp.Implementation(VM);
                var result = VM.Stack.Pop();
                CheckEqual(-1, result);
            }
        }

        public void CheckFullRange()
        {
            bool[] found = {false, false, false, false};
            for (int i = 0; i < 100; i++)
            {
                VM.Stack.Push(3);
                bp.Implementation(VM);
                found[VM.Stack.Pop()] = true;
            }

            CheckEqual(new bool[] { false, true, true, true }, found);
        }
    }
}