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diff --git a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectCrossingTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectCrossingTests.cs
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+/*
+ * 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 OpenSimulator 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;
+using Nini.Config;
+using NUnit.Framework;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.CoreModules.Framework.EntityTransfer;
+using OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation;
+using OpenSim.Region.CoreModules.World.Land;
+using OpenSim.Region.OptionalModules;
+using OpenSim.Tests.Common;
+using OpenSim.Tests.Common.Mock;
+
+namespace OpenSim.Region.Framework.Scenes.Tests
+{
+    public class SceneObjectCrossingTests : OpenSimTestCase
+    {
+        [TestFixtureSetUp]
+        public void FixtureInit()
+        {
+            // Don't allow tests to be bamboozled by asynchronous events.  Execute everything on the same thread.
+            Util.FireAndForgetMethod = FireAndForgetMethod.RegressionTest;
+        }
+
+        [TestFixtureTearDown]
+        public void TearDown()
+        {
+            // We must set this back afterwards, otherwise later tests will fail since they're expecting multiple
+            // threads.  Possibly, later tests should be rewritten so none of them require async stuff (which regression
+            // tests really shouldn't).
+            Util.FireAndForgetMethod = Util.DefaultFireAndForgetMethod;
+        }
+
+        /// <summary>
+        /// Test cross with no prim limit module.
+        /// </summary>
+        [Test]
+        public void TestCrossOnSameSimulator()
+        {
+            TestHelpers.InMethod();
+            TestHelpers.EnableLogging();
+
+            UUID userId = TestHelpers.ParseTail(0x1);
+            int sceneObjectIdTail = 0x2;
+
+            EntityTransferModule etmA = new EntityTransferModule();
+            EntityTransferModule etmB = new EntityTransferModule();
+            LocalSimulationConnectorModule lscm = new LocalSimulationConnectorModule();
+
+            IConfigSource config = new IniConfigSource();
+            IConfig modulesConfig = config.AddConfig("Modules");
+            modulesConfig.Set("EntityTransferModule", etmA.Name);
+            modulesConfig.Set("SimulationServices", lscm.Name);
+//            IConfig entityTransferConfig = config.AddConfig("EntityTransfer");
+
+            SceneHelpers sh = new SceneHelpers();
+            TestScene sceneA = sh.SetupScene("sceneA", TestHelpers.ParseTail(0x100), 1000, 1000);
+            TestScene sceneB = sh.SetupScene("sceneB", TestHelpers.ParseTail(0x200), 1000, 999);
+
+            SceneHelpers.SetupSceneModules(new Scene[] { sceneA, sceneB }, config, lscm);
+            SceneHelpers.SetupSceneModules(sceneA, config, etmA);
+            SceneHelpers.SetupSceneModules(sceneB, config, etmB);
+
+            SceneObjectGroup so1 = SceneHelpers.AddSceneObject(sceneA, 1, userId, "", sceneObjectIdTail);
+            UUID so1Id = so1.UUID;
+            so1.AbsolutePosition = new Vector3(128, 10, 20);
+
+            // Cross with a negative value
+            so1.AbsolutePosition = new Vector3(128, -10, 20);
+
+            Assert.IsNull(sceneA.GetSceneObjectGroup(so1Id));
+            Assert.NotNull(sceneB.GetSceneObjectGroup(so1Id));
+        }
+
+        /// <summary>
+        /// Test cross with no prim limit module.
+        /// </summary>
+        /// <remarks>
+        /// XXX: This test may be better off in a specific PrimLimitsModuleTest class in optional module tests in the
+        /// future (though it is configured as active by default, so not really optional).
+        /// </remarks>
+        [Test]
+        public void TestCrossOnSameSimulatorPrimLimitsOkay()
+        {
+            TestHelpers.InMethod();
+            TestHelpers.EnableLogging();
+
+            UUID userId = TestHelpers.ParseTail(0x1);
+            int sceneObjectIdTail = 0x2;
+
+            EntityTransferModule etmA = new EntityTransferModule();
+            EntityTransferModule etmB = new EntityTransferModule();
+            LocalSimulationConnectorModule lscm = new LocalSimulationConnectorModule();
+            LandManagementModule lmmA = new LandManagementModule();
+            LandManagementModule lmmB = new LandManagementModule();
+
+            IConfigSource config = new IniConfigSource();
+            IConfig modulesConfig = config.AddConfig("Modules");
+            modulesConfig.Set("EntityTransferModule", etmA.Name);
+            modulesConfig.Set("SimulationServices", lscm.Name);
+
+            // Remove?
+//            IConfig entityTransferConfig = config.AddConfig("EntityTransfer");
+
+            IConfig permissionsConfig = config.AddConfig("Permissions");
+            permissionsConfig.Set("permissionmodules", "PrimLimitsModule");
+
+            SceneHelpers sh = new SceneHelpers();
+            TestScene sceneA = sh.SetupScene("sceneA", TestHelpers.ParseTail(0x100), 1000, 1000);
+            TestScene sceneB = sh.SetupScene("sceneB", TestHelpers.ParseTail(0x200), 1000, 999);
+
+            SceneHelpers.SetupSceneModules(new Scene[] { sceneA, sceneB }, config, lscm);
+            SceneHelpers.SetupSceneModules(
+                sceneA, config, etmA, lmmA, new PrimLimitsModule(), new PrimCountModule());
+            SceneHelpers.SetupSceneModules(
+                sceneB, config, etmB, lmmB, new PrimLimitsModule(), new PrimCountModule());
+
+            // We must set up the parcel for this to work.  Normally this is taken care of by OpenSimulator startup
+            // code which is not yet easily invoked by tests.
+            lmmA.EventManagerOnNoLandDataFromStorage();
+            lmmB.EventManagerOnNoLandDataFromStorage();
+
+            SceneObjectGroup so1 = SceneHelpers.AddSceneObject(sceneA, 1, userId, "", sceneObjectIdTail);
+            UUID so1Id = so1.UUID;
+            so1.AbsolutePosition = new Vector3(128, 10, 20);
+
+            // Cross with a negative value.  We must make this call rather than setting AbsolutePosition directly
+            // because only this will execute permission checks in the source region.
+            sceneA.SceneGraph.UpdatePrimGroupPosition(so1.LocalId, new Vector3(128, -10, 20), userId);
+
+            Assert.IsNull(sceneA.GetSceneObjectGroup(so1Id));
+            Assert.NotNull(sceneB.GetSceneObjectGroup(so1Id));
+        }
+    }
+}
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