diff --git a/OpenSim/Region/Environment/Modules/World/Terrain/Tests/TerrainTest.cs b/OpenSim/Region/Environment/Modules/World/Terrain/Tests/TerrainTest.cs
new file mode 100644
index 0000000000..ccb056183b
--- /dev/null
+++ b/OpenSim/Region/Environment/Modules/World/Terrain/Tests/TerrainTest.cs
@@ -0,0 +1,59 @@
+using System;
+using NUnit.Framework;
+using OpenSim.Region.Environment.Modules.World.Terrain.PaintBrushes;
+
+namespace OpenSim.Region.Environment.Modules.World.Terrain.Tests
+{
+    [TestFixture]
+    public class TerrainTest
+    {
+        [Test]
+        public void BrushTest()
+        {
+            TerrainChannel x = new TerrainChannel(256, 256);
+            ITerrainPaintableEffect effect = new RaiseSphere();
+
+            effect.PaintEffect(x, 128.0, 128.0, 50, 0.1);
+            Assert.That(x[128, 128] > 0.0, "Raise brush not raising values.");
+            Assert.That(x[0, 128] > 0.0, "Raise brush lowering edge values.");
+
+            x = new TerrainChannel(256, 256);
+            effect = new LowerSphere();
+
+            effect.PaintEffect(x, 128.0, 128.0, 50, 0.1);
+            Assert.That(x[128, 128] < 0.0, "Lower not lowering values.");
+            Assert.That(x[0, 128] < 0.0, "Lower brush affecting edge values.");
+        }
+
+        [Test]
+        public void TerrainChannelTest()
+        {
+            TerrainChannel x = new TerrainChannel(256, 256);
+            Assert.That(x[0, 0] == 0.0, "Terrain not initialising correctly.");
+
+            x[0, 0] = 1.0;
+            Assert.That(x[0, 0] == 1.0, "Terrain not setting values correctly.");
+
+            x[0, 0] = 0;
+            x[0, 0] += 5.0;
+            x[0, 0] -= 1.0;
+            Assert.That(x[0, 0] == 4.0, "Terrain addition/subtraction error.");
+
+            x[0, 0] = Math.PI;
+            double[,] doublesExport = x.GetDoubles();
+            Assert.That(doublesExport[0, 0] == Math.PI, "Export to double[,] array not working correctly.");
+
+            x[0, 0] = 1.0;
+            float[] floatsExport = x.GetFloatsSerialised();
+            Assert.That(floatsExport[0] == 1.0f, "Export to float[] not working correctly.");
+
+            x[0, 0] = 1.0;
+            Assert.That(x.Tainted(0, 0), "Terrain channel tainting not working correctly.");
+            Assert.That(!x.Tainted(0, 0), "Terrain channel tainting not working correctly.");
+
+            TerrainChannel y = x.Copy();
+            Assert.That(!ReferenceEquals(x, y), "Terrain copy not duplicating correctly.");
+            Assert.That(!ReferenceEquals(x.GetDoubles(), y.GetDoubles()), "Terrain array not duplicating correctly.");
+        }
+    }
+}
\ No newline at end of file
diff --git a/prebuild.xml b/prebuild.xml
index d0a6e2bbf2..485e70db4b 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -791,6 +791,9 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Region.Physics.Manager"/>
       <Reference name="OpenSim.Framework.Servers"/>
+	  <!-- Unit tests -->
+	  <Reference name="OpenSim.Tests.Common"/>
+	  <Reference name="nunit.framework.dll"/>
       <!-- For scripting in funny languages by default -->
       <Reference name="Microsoft.JScript"/>
       <Reference name="XMLRPC.dll"/>