using System;
using Developpez.Dotnet.Algorithms;
using NUnit.Framework;

namespace Developpez.Dotnet.Tests.Algorithms
{
    [TestFixture]
    public class LuhnTests
    {

        #region Check method with strings

        [Test]
        public void CheckStandardString()
        {
            Assert.AreEqual(true, Luhn.Check("732829320"));
            Assert.AreEqual(true, Luhn.Check("7328", LuhnCheckType.None));
            Assert.AreEqual(true, Luhn.Check("732829320", LuhnCheckType.Siren));
            Assert.AreEqual(true, Luhn.Check("73282932000009", LuhnCheckType.Siret));
            Assert.AreEqual(true, Luhn.Check("7322293245668758", LuhnCheckType.CreditCard));
        }

        [Test]
        public void CheckIncorrectString()
        {
            Assert.AreEqual(false, Luhn.Check("7328293200"));
            Assert.AreEqual(false, Luhn.Check("7327", LuhnCheckType.None));
            Assert.AreEqual(false, Luhn.Check("732829321", LuhnCheckType.Siren));
            Assert.AreEqual(false, Luhn.Check("73282932000008", LuhnCheckType.Siret));
            Assert.AreEqual(false, Luhn.Check("7322293245668757", LuhnCheckType.CreditCard));
        }

        [Test]
        [ExpectedException(typeof(ArgumentNullException))]
        public void CheckEmptyString()
        {
            Luhn.Check(string.Empty);
        }

        [Test]
        [ExpectedException(typeof(ArgumentNullException))]
        public void CheckNullString()
        {
            Luhn.Check(null);
        }

        [Test]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void CheckZeroString()
        {
            Luhn.Check("0");
        }

        [Test]
        [ExpectedException(typeof(ArgumentException))]
        public void CheckNotANumberString()
        {
            Luhn.Check("Foo");
        }

        #endregion



        #region Check method with numbers

        [Test]
        public void CheckStandardNumber()
        {
            Assert.AreEqual(true, Luhn.Check(732829320));
            Assert.AreEqual(true, Luhn.Check(7328, LuhnCheckType.None));
            Assert.AreEqual(true, Luhn.Check(732829320, LuhnCheckType.Siren));
            Assert.AreEqual(true, Luhn.Check(73282932000009, LuhnCheckType.Siret));
            Assert.AreEqual(true, Luhn.Check(7322293245668758, LuhnCheckType.CreditCard));
        }

        [Test]
        public void CheckIncorrectNumber()
        {
            Assert.AreEqual(false, Luhn.Check(7328293200));
            Assert.AreEqual(false, Luhn.Check(7327, LuhnCheckType.None));
            Assert.AreEqual(false, Luhn.Check(732829321, LuhnCheckType.Siren));
            Assert.AreEqual(false, Luhn.Check(73282932000008, LuhnCheckType.Siret));
            Assert.AreEqual(false, Luhn.Check(7322293245668757, LuhnCheckType.CreditCard));
        }

        [Test]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void CheckZeroNumber()
        {
            Luhn.Check(0);
        }

        [Test]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void CheckNegativeNumber()
        {
            Luhn.Check(-5);
        }

        #endregion

    }
}