diff --git a/tests/BaseTransformTest.cs b/tests/BaseTransformTest.cs
new file mode 100644
index 0000000000..327ed4180f
--- /dev/null
+++ b/tests/BaseTransformTest.cs
@@ -0,0 +1,140 @@
+using System;
+using NUnit.Framework;
+using Gst;
+using Gst.Base;
+
+[TestFixture]
+public class BaseTransformTest {
+  [TestFixtureSetUp]
+  public void Init() {
+    Application.Init();
+  }
+
+  private class MyTransformIp : Gst.Base.BaseTransform {
+
+    public static bool Register () {
+      Gst.GLib.GType gtype = (Gst.GLib.GType) typeof (MyTransformIp);
+      SetDetails (gtype, "My Transform", "Filter/Transform", "Do nothing useful", "Nobody");
+
+      Caps caps = Caps.FromString ("foo/bar");
+
+      AddPadTemplate (gtype, new PadTemplate ("src", PadDirection.Src, PadPresence.Always, caps));
+      AddPadTemplate (gtype, new PadTemplate ("sink", PadDirection.Sink, PadPresence.Always, caps));
+      return ElementFactory.Register (null, "mytransform-ip", (uint) Gst.Rank.None, gtype);
+    }
+
+    protected override FlowReturn OnTransformIp (Gst.Buffer buf) {
+      Assert.IsTrue (buf.IsWritable);
+      return base.OnTransformIp (buf);
+    }
+  }
+
+  [Test]
+  public void TestBufferOwnership () {
+    MyTransformIp.Register ();
+
+    Pipeline pipeline = new Pipeline ();
+    Element src = ElementFactory.Make ("fakesrc");
+    src["num-buffers"] = 10;
+    Element transform = new MyTransformIp ();
+    Element sink = ElementFactory.Make ("fakesink");
+
+    pipeline.Add (src, transform, sink);
+    Element.Link (src, transform, sink);
+
+    Gst.GLib.MainLoop loop = new Gst.GLib.MainLoop ();
+
+    pipeline.Bus.AddWatch (delegate (Bus bus, Message message) {
+                             switch (message.Type) {
+                             case MessageType.Error:
+                                 Enum err;
+                                 string msg;
+
+                                 message.ParseError (out err, out msg);
+                                 Assert.Fail (String.Format ("Error message: {0}", msg));
+                                 loop.Quit ();
+                                 break;
+                               case MessageType.Eos:
+                                   loop.Quit ();
+                                   break;
+                                 }
+                                 return true;
+                               });
+
+    pipeline.SetState (State.Playing);
+    loop.Run ();
+    pipeline.SetState (State.Null);
+  }
+
+  private class MyTransformNIp : Gst.Base.BaseTransform {
+    public bool transformed = false;
+
+    public static bool Register () {
+      Gst.GLib.GType gtype = (Gst.GLib.GType) typeof (MyTransformNIp);
+      SetDetails (gtype, "My Transform", "Filter/Transform", "Do nothing useful", "Nobody");
+
+      Caps caps = Caps.FromString ("foo/bar");
+
+      AddPadTemplate (gtype, new PadTemplate ("src", PadDirection.Src, PadPresence.Always, caps));
+      AddPadTemplate (gtype, new PadTemplate ("sink", PadDirection.Sink, PadPresence.Always, caps));
+      return ElementFactory.Register (null, "mytransform-nip", (uint) Gst.Rank.None, gtype);
+    }
+
+    protected override FlowReturn OnTransform (Gst.Buffer inbuf, Gst.Buffer outbuf) {
+      Assert.IsTrue (outbuf.IsWritable);
+      transformed = true;
+      return base.OnTransform (inbuf, outbuf);
+    }
+
+    protected override bool OnSetCaps (Caps incaps, Caps outcaps) {
+      Assert.IsTrue (incaps.IsEqual (outcaps));
+      return base.OnSetCaps (incaps, outcaps);
+    }
+
+    protected override bool OnTransformSize (Gst.PadDirection direction, Gst.Caps caps, uint size, Gst.Caps othercaps, out uint othersize) {
+      othersize = size;
+      return true;
+    }
+  }
+
+  [Test]
+  public void TestBufferOwnershipNIp () {
+    MyTransformNIp.Register ();
+
+    Pipeline pipeline = new Pipeline ();
+    Element src = ElementFactory.Make ("fakesrc");
+    src["sizetype"] = 2;
+    Element capsfilter = ElementFactory.Make ("capsfilter");
+    capsfilter["caps"] = Caps.FromString ("foo/bar");
+    src["num-buffers"] = 10;
+    MyTransformNIp transform = new MyTransformNIp ();
+    Element sink = ElementFactory.Make ("fakesink");
+
+    pipeline.Add (src, capsfilter, transform, sink);
+    Element.Link (src, capsfilter, transform, sink);
+
+    Gst.GLib.MainLoop loop = new Gst.GLib.MainLoop ();
+
+    pipeline.Bus.AddWatch (delegate (Bus bus, Message message) {
+                             switch (message.Type) {
+                             case MessageType.Error:
+                                 Enum err;
+                                 string msg;
+
+                                 message.ParseError (out err, out msg);
+                                 Assert.Fail (String.Format ("Error message: {0}", msg));
+                                 loop.Quit ();
+                                 break;
+                               case MessageType.Eos:
+                                   loop.Quit ();
+                                   break;
+                                 }
+                                 return true;
+                               });
+
+    pipeline.SetState (State.Playing);
+    loop.Run ();
+    Assert.IsTrue (transform.transformed);
+    pipeline.SetState (State.Null);
+  }
+}
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 47ad2c22d4..c65335df85 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -2,7 +2,7 @@ MCS_FLAGS = -debug $(MONO_NUNIT_LIBS)
 
 ASSEMBLY_NAME = gstreamer-tests
 ASSEMBLY = $(ASSEMBLY_NAME).dll
-ASSEMBLY_CSFILES = $(srcdir)/ApplicationTest.cs $(srcdir)/BinTest.cs $(srcdir)/BufferTest.cs $(srcdir)/CapsTest.cs $(srcdir)/PadTest.cs $(srcdir)/ElementTest.cs $(srcdir)/MessageTest.cs $(srcdir)/PipelineTest.cs
+ASSEMBLY_CSFILES = $(srcdir)/ApplicationTest.cs $(srcdir)/BinTest.cs $(srcdir)/BufferTest.cs $(srcdir)/CapsTest.cs $(srcdir)/PadTest.cs $(srcdir)/ElementTest.cs $(srcdir)/MessageTest.cs $(srcdir)/PipelineTest.cs $(srcdir)/BaseTransformTest.cs
 
 $(ASSEMBLY): $(ASSEMBLY_CSFILES)
 	$(CSC) $(MCS_FLAGS) -out:$@ -target:library -r:$(top_builddir)/gstreamer-sharp/gstreamer-sharp.dll $(ASSEMBLY_CSFILES) $(GLIBSHARP_LIBS)