#region License
// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
// This source code is made available under the terms of the GNU Lesser General Public License v3.0
// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
#endregion

using MiniSqlQuery.Core;
using NUnit.Framework;

// ReSharper disable InconsistentNaming

namespace MiniSqlQuery.Tests.MRU
{
    [TestFixture]
    public class MostRecentFilesService_Tests
    {
        private MostRecentFilesService _service;

        [Test]
        public void List_does_not_exceed_maximum_entries()
        {
            // set up the max entries
            int i = 1;
            for (; i <= _service.MaxCommands; i++)
            {
                _service.Register(i.ToString());
            }

            // add 1 extra
            i++;
            _service.Register(i.ToString());

            Assert.That(_service.Filenames.Count, Is.EqualTo(_service.MaxCommands));
        }

        [Test]
        public void No_filenames_at_start()
        {
            Assert.That(_service.Filenames.Count, Is.EqualTo(0));
        }

        [Test]
        public void Register_adds_new_files()
        {
            _service.Register("1");
            _service.Register("2");
            Assert.That(_service.Filenames.Count, Is.EqualTo(2));
        }

        [Test]
        public void Register_adds_only_new_files()
        {
            _service.Register("1");
            _service.Register("2");
            _service.Register("2");
            _service.Register("2");
            Assert.That(_service.Filenames.Count, Is.EqualTo(2));
        }

        [Test]
        public void Register_takes_off_relevent_file()
        {
            _service.Register("1");
            _service.Register("2");
            _service.Register("3");
            Assert.That(_service.Filenames.Count, Is.EqualTo(3));

            _service.Remove("2");
            Assert.That(_service.Filenames.Count, Is.EqualTo(2));
            Assert.That(_service.Filenames[0], Is.EqualTo("3"));
            Assert.That(_service.Filenames[1], Is.EqualTo("1"));
        }

        [SetUp]
        public void TestSetUp()
        {
            _service = new MostRecentFilesService();
        }
    }
}