1 files changed, 68 insertions, 0 deletions
diff --git a/Duplicati/UnitTest/CompressionTests.cs b/Duplicati/UnitTest/CompressionTests.cs
new file mode 100644
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+++ b/Duplicati/UnitTest/CompressionTests.cs
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+//  Copyright (C) 2017, The Duplicati Team
+//  http://www.duplicati.com, info@duplicati.com
+//
+//  This library is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU Lesser General Public License as
+//  published by the Free Software Foundation; either version 2.1 of the
+//  License, or (at your option) any later version.
+//
+//  This library 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
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+using System;
+using System.Collections.Generic;
+using System.IO;
+using NUnit.Framework;
+
+namespace Duplicati.UnitTest
+{
+    [TestFixture]
+    [Category("Compression")]
+    public class CompressionTests
+    {
+        [Test]
+        public void TestZipCompressionHints()
+        {
+            TestCompressionHints("zip");
+        }
+
+        [Test]
+        public void Test7zCompressionHints()
+        {
+            TestCompressionHints("7z");
+        }
+
+        public void TestCompressionHints(string module)
+        {
+            const int TESTSIZE = 1024 * 1024;
+
+            using (var tf0 = new Library.Utility.TempFile())
+            using (var tf1 = new Library.Utility.TempFile())
+            {
+                var opts = new Dictionary<string, string>();
+                opts["zip-compression-level"] = "9";
+
+                using (var z0 = Library.DynamicLoader.CompressionLoader.GetModule(module, tf0, opts))
+                using (var fs0 = z0.CreateFile("sample", Library.Interface.CompressionHint.Noncompressible, DateTime.Now))
+                    fs0.Write(new byte[TESTSIZE], 0, TESTSIZE);
+
+                using (var z1 = Library.DynamicLoader.CompressionLoader.GetModule(module, tf1, opts))
+                using (var fs1 = z1.CreateFile("sample", Library.Interface.CompressionHint.Compressible, DateTime.Now))
+                    fs1.Write(new byte[TESTSIZE], 0, TESTSIZE);
+
+
+                if (new FileInfo(tf0).Length < TESTSIZE)
+                    throw new Exception("Compression hint non-compressible is not honored");
+
+                if (new FileInfo(tf1).Length > new FileInfo(tf0).Length * 0.25)
+                    throw new Exception("Compression is not applied");
+            }
+        }
+        
+    }
+}