diff --git a/Aaru.Tests/Images/DiskDupe.cs b/Aaru.Tests/Images/DiskDupe.cs
new file mode 100644
index 000000000..d1effba08
--- /dev/null
+++ b/Aaru.Tests/Images/DiskDupe.cs
@@ -0,0 +1,72 @@
+// /***************************************************************************
+// Aaru Data Preservation Suite
+// ----------------------------------------------------------------------------
+//
+// Filename       : DiskDupe.cs
+// Author(s)      : Michael Drüing <michael@drueing.de>
+//
+// Component      : Aaru unit testing.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2021 Michael Drüing
+// Copyright © 2011-2021 Natalia Portillo
+// ****************************************************************************/
+
+using System.IO;
+using Aaru.CommonTypes;
+using Aaru.CommonTypes.Interfaces;
+using Aaru.DiscImages;
+using NUnit.Framework;
+
+namespace Aaru.Tests.Images
+{
+    [TestFixture]
+    public class DiskDupe : BlockMediaImageTest
+    {
+        public override string DataFolder => Path.Combine(Consts.TEST_FILES_ROOT, "Media image formats", "DiskDupe");
+        public override IMediaImage _plugin => new HdCopy();
+
+        public override BlockImageTestExpected[] Tests => new[]
+        {
+            new BlockImageTestExpected
+            {
+                TestFile   = "1.DDI.lz",
+                MediaType  = MediaType.DOS_35_HD,
+                Sectors    = 2880,
+                SectorSize = 512,
+                MD5        = "0d5735269cb9c3d0e63ec9ccfb38e4e2"
+            },
+            new BlockImageTestExpected
+            {
+                TestFile   = "2.DDI.lz",
+                MediaType  = MediaType.DOS_35_HD,
+                Sectors    = 2880,
+                SectorSize = 512,
+                MD5        = "fa639b4bd96d2fb7be33a1725e9c7c4f"
+            },
+            new BlockImageTestExpected
+            {
+                TestFile   = "3.DDI.lz",
+                MediaType  = MediaType.DOS_35_HD,
+                Sectors    = 2880,
+                SectorSize = 512,
+                MD5        = "4d70ec678212269bd9572fdedbd8b811"
+            }
+        };
+    }
+}