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Assets/NavMesh/Tests/NavMeshSurfaceModifierVolumeTests.cs

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+#if UNITY_EDITOR || UNITY_STANDALONE
+using UnityEngine;
+using UnityEngine.AI;
+using UnityEngine.TestTools;
+using NUnit.Framework;
+using System.Collections;
+
+[TestFixture]
+public class NavMeshSurfaceModifierVolumeTests
+{
+    NavMeshSurface surface;
+    NavMeshModifierVolume modifier;
+
+    [SetUp]
+    public void CreatePlaneAndModifierVolume()
+    {
+        var go = GameObject.CreatePrimitive(PrimitiveType.Plane);
+        surface = go.AddComponent<NavMeshSurface>();
+
+        modifier = new GameObject().AddComponent<NavMeshModifierVolume>();
+    }
+
+    [TearDown]
+    public void DestroyPlaneAndModifierVolume()
+    {
+        GameObject.DestroyImmediate(surface.gameObject);
+        GameObject.DestroyImmediate(modifier.gameObject);
+    }
+
+    [Test]
+    public void AreaAffectsNavMeshOverlapping()
+    {
+        modifier.center = Vector3.zero;
+        modifier.size = Vector3.one;
+        modifier.area = 4;
+
+        surface.BuildNavMesh();
+
+        var expectedAreaMask = 1 << 4;
+        Assert.IsTrue(NavMeshSurfaceTests.HasNavMeshAtOrigin(expectedAreaMask));
+    }
+
+    [Test]
+    public void AreaDoesNotAffectsNavMeshWhenNotOverlapping()
+    {
+        modifier.center = 1.1f * Vector3.right;
+        modifier.size = Vector3.one;
+        modifier.area = 4;
+
+        surface.BuildNavMesh();
+
+        var expectedAreaMask = 1;
+        Assert.IsTrue(NavMeshSurfaceTests.HasNavMeshAtOrigin(expectedAreaMask));
+    }
+
+    [Test]
+    public void BuildUsesOnlyIncludedModifierVolume()
+    {
+        modifier.center = Vector3.zero;
+        modifier.size = Vector3.one;
+        modifier.area = 4;
+        modifier.gameObject.layer = 7;
+
+        surface.layerMask = ~(1 << 7);
+        surface.BuildNavMesh();
+
+        var expectedAreaMask = 1;
+        Assert.IsTrue(NavMeshSurfaceTests.HasNavMeshAtOrigin(expectedAreaMask));
+    }
+}
+#endif