using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NUnit.Framework;
using Developpez.Dotnet.Linq;

namespace Developpez.Dotnet.Tests.Linq
{
    [TestFixture]
    public class LinqHelperTests
    {
        #region Dummy properties and methods

        public int Foo { get; set; }

        public int Bar(int x)
        {
            return x;
        }

        public void Baz(int x)
        {
        }

        #endregion

        [Test]
        public void Test_GetPropertyName()
        {
            string expected = "Foo";
            string actual = LinqHelper.GetPropertyName(() => Foo);
            Assert.AreEqual(actual, expected);

            Assert2.Throws<ArgumentException>(
                () =>
                    actual = LinqHelper.GetPropertyName(() => Bar(42)));
        }

        [Test]
        public void Test_GetMethodName()
        {
            string expected = "Bar";
            string actual = LinqHelper.GetMethodName(() => Bar(42));
            Assert.AreEqual(actual, expected);

            expected = "Baz";
            actual = LinqHelper.GetMethodName(() => Baz(42));
            Assert.AreEqual(actual, expected);

            Assert2.Throws<ArgumentException>(
                () =>
                    actual = LinqHelper.GetMethodName(() => Foo));
        }
    }
}