Thank you kindly, TLaukkan (Tommil) for a patch that:

Created nunit test for LSL API and example test for 
llAngleBetween which was marked untested in wiki. 
Run new test succesfully with NUnitGUI and nant build. 

1 files changed, 140 insertions, 0 deletions

diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
new file mode 100644
index 0000000..e2718cc
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
@@ -0,0 +1,140 @@
+/*

+ * Copyright (c) Contributors, http://opensimulator.org/

+ * See CONTRIBUTORS.TXT for a full list of copyright holders.

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions are met:

+ *     * Redistributions of source code must retain the above copyright

+ *       notice, this list of conditions and the following disclaimer.

+ *     * Redistributions in binary form must reproduce the above copyright

+ *       notice, this list of conditions and the following disclaimer in the

+ *       documentation and/or other materials provided with the distribution.

+ *     * Neither the name of the OpenSim Project nor the

+ *       names of its contributors may be used to endorse or promote products

+ *       derived from this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY

+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY

+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ */

+

+using System.Collections.Generic;

+using NUnit.Framework;

+using OpenSim.Tests.Common;

+using OpenSim.Region.ScriptEngine.Shared;

+using OpenSim.Tests.Common.Setup;

+using OpenSim.Region.Framework.Scenes;

+using Nini.Config;

+using OpenSim.Region.ScriptEngine.Shared.Api;

+using OpenMetaverse;

+using System;

+

+namespace OpenSim.Region.ScriptEngine.Shared.Tests

+{

+    /// <summary>

+    /// Tests for LSL_Api

+    /// </summary>

+    [TestFixture]

+    public class LSL_ApiTest

+    {

+

+        private const double ANGLE_ACCURACY_IN_RADIANS = 1E-7;

+        private LSL_Api lslApi;

+

+        [SetUp]

+        public void SetUp()

+        {

+

+            IniConfigSource initConfigSource = new IniConfigSource();

+            IConfig config = initConfigSource.AddConfig("XEngine");

+            config.Set("Enabled", "true");

+

+            Scene scene = SceneSetupHelpers.SetupScene();

+            SceneObjectPart part = SceneSetupHelpers.AddSceneObject(scene);

+

+            XEngine.XEngine engine = new XEngine.XEngine();

+            engine.Initialise(scene, initConfigSource);

+

+            lslApi = new LSL_Api();

+            lslApi.Initialize(engine, part, part.LocalId, part.UUID);

+

+        }

+

+        [Test]

+        public void TestllAngleBetween()

+        {

+            TestllAngleBetween(new Vector3(1, 0, 0), 0);

+            TestllAngleBetween(new Vector3(1, 0, 0), 90);

+            TestllAngleBetween(new Vector3(1, 0, 0), 180);

+            TestllAngleBetween(new Vector3(1, 0, 0), 270);

+

+            TestllAngleBetween(new Vector3(0, 1, 0), 0);

+            TestllAngleBetween(new Vector3(0, 1, 0), 90);

+            TestllAngleBetween(new Vector3(0, 1, 0), 180);

+            TestllAngleBetween(new Vector3(0, 1, 0), 270);

+

+            TestllAngleBetween(new Vector3(0, 0, 1), 0);

+            TestllAngleBetween(new Vector3(0, 0, 1), 90);

+            TestllAngleBetween(new Vector3(0, 0, 1), 180);

+            TestllAngleBetween(new Vector3(0, 0, 1), 270);

+

+            TestllAngleBetween(new Vector3(1, 1, 1), 0);

+            TestllAngleBetween(new Vector3(1, 1, 1), 90);

+            TestllAngleBetween(new Vector3(1, 1, 1), 180);

+            TestllAngleBetween(new Vector3(1, 1, 1), 270);

+        }

+

+        private void TestllAngleBetween(Vector3 axis,float originalAngle)

+        {

+            Quaternion rotation1 = Quaternion.CreateFromAxisAngle(axis, 0);

+            Quaternion rotation2 = Quaternion.CreateFromAxisAngle(axis, ToRadians(originalAngle));

+

+            double deducedAngle = FromLslFloat(lslApi.llAngleBetween(ToLslQuaternion(rotation2), ToLslQuaternion(rotation1)));

+

+            Assert.Greater(deducedAngle, ToRadians(originalAngle) - ANGLE_ACCURACY_IN_RADIANS);

+            Assert.Less(deducedAngle, ToRadians(originalAngle) + ANGLE_ACCURACY_IN_RADIANS);

+        }

+

+        #region Conversions to and from LSL_Types

+

+        private float ToRadians(double degrees)

+        {

+            return (float)(Math.PI * degrees / 180);

+        }

+

+        private double FromRadians(float radians)

+        {

+            return radians * 180 / Math.PI;

+        }

+

+        private double FromLslFloat(LSL_Types.LSLFloat lslFloat)

+        {

+            return lslFloat.value;

+        }

+

+        private LSL_Types.LSLFloat ToLslFloat(double value)

+        {

+            return new LSL_Types.LSLFloat(value);

+        }

+

+        private Quaternion FromLslQuaternion(LSL_Types.Quaternion lslQuaternion)

+        {

+            return new Quaternion((float)lslQuaternion.x, (float)lslQuaternion.y, (float)lslQuaternion.z, (float)lslQuaternion.s);

+        }

+

+        private LSL_Types.Quaternion ToLslQuaternion(Quaternion quaternion)

+        {

+            return new LSL_Types.Quaternion(quaternion.X, quaternion.Y, quaternion.Z, quaternion.W);

+        }

+

+        #endregion

+

+    }

+}