using System;
using System.Collections.Generic;
using NUnit.Framework;
using StuntJuice.Portal.Core.DesignByContract;

namespace StuntJuice.Portal.Core.Tests
{
    [TestFixture]
    public class DesignByContractTestCases
    {
        [Test]
        public void CanCall_ObjectCheckOptions()
        {
            List<string> testList = new List<string>();
            Check.Parameter(testList).WithMessage("testList cannot be null").IsNotNull();
        }

        [Test]
        [ExpectedException(typeof(ArgumentNullException))]
        public void Throws_ArgumentNullException_When_Parameter_IsNull()
        {
            List<string> testList = new List<string>();
            testList = null;

            Check.Parameter(testList).IsNotNull();
        }

        [Test]
        [ExpectedException(typeof(ArgumentNullException))]
        public void CanCall_ThrowArgumentNullException_WithoutMessage()
        {
            Check.ThrowArgumentNullException("");
        }

        [Test]
        [ExpectedException(typeof(ArgumentNullException), "some message")]
        public void CanCall_ThrowArgumentNullException_WithMessage()
        {
            Check.ThrowArgumentNullException("some message");
        }

        [Test]
        public void CanCall_Parameter()
        {
            Check.Parameter("some string");
            Check.Parameter(new List<string>());
        }

        [Test]
        public void CanCall_IsNotNullOrEmpty()
        {
            StringCheckOptions checkOptions = new StringCheckOptions("someval");
            checkOptions.IsNotNullOrEmpty();
        }

        [Test]
        [ExpectedException(typeof(ArgumentNullException), "something")]
        public void Throws_ArgumentNullException_If_IsNullOrEmpty()
        {
            StringCheckOptions checkOptions = new StringCheckOptions("");
            checkOptions.WithMessage("something").IsNotNullOrEmpty();
        }
    }
}