diff --git a/minisqlquery-master/src/MiniSqlQuery.Tests/MRU/MostRecentFilesService_Tests.cs b/minisqlquery-master/src/MiniSqlQuery.Tests/MRU/MostRecentFilesService_Tests.cs
new file mode 100644
index 0000000..0849ab6
--- /dev/null
+++ b/minisqlquery-master/src/MiniSqlQuery.Tests/MRU/MostRecentFilesService_Tests.cs
@@ -0,0 +1,80 @@
+#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();
+ }
+ }
+}
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