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Assets/NavMesh/Tests/NavMeshSurfaceModifierTests.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 NavMeshSurfaceModifierTests
+{
+    NavMeshSurface surface;
+    NavMeshModifier modifier;
+
+    [SetUp]
+    public void CreatePlaneWithModifier()
+    {
+        var plane = GameObject.CreatePrimitive(PrimitiveType.Plane);
+        surface = plane.AddComponent<NavMeshSurface>();
+        modifier = plane.AddComponent<NavMeshModifier>();
+    }
+
+    [TearDown]
+    public void DestroyPlaneWithModifier()
+    {
+        GameObject.DestroyImmediate(modifier.gameObject);
+    }
+
+    [Test]
+    public void ModifierIgnoreAffectsSelf()
+    {
+        modifier.ignoreFromBuild = true;
+
+        surface.BuildNavMesh();
+
+        Assert.IsFalse(NavMeshSurfaceTests.HasNavMeshAtOrigin());
+    }
+
+    [Test]
+    public void ModifierIgnoreAffectsChild()
+    {
+        modifier.ignoreFromBuild = true;
+        modifier.GetComponent<MeshRenderer>().enabled = false;
+
+        var childPlane = GameObject.CreatePrimitive(PrimitiveType.Plane);
+        childPlane.transform.SetParent(modifier.transform);
+
+        surface.BuildNavMesh();
+
+        Assert.IsFalse(NavMeshSurfaceTests.HasNavMeshAtOrigin());
+        GameObject.DestroyImmediate(childPlane);
+    }
+
+    [Test]
+    public void ModifierIgnoreDoesNotAffectSibling()
+    {
+        modifier.ignoreFromBuild = true;
+        modifier.GetComponent<MeshRenderer>().enabled = false;
+
+        var siblingPlane = GameObject.CreatePrimitive(PrimitiveType.Plane);
+
+        surface.BuildNavMesh();
+
+        Assert.IsTrue(NavMeshSurfaceTests.HasNavMeshAtOrigin());
+        GameObject.DestroyImmediate(siblingPlane);
+    }
+
+    [Test]
+    public void ModifierOverrideAreaAffectsSelf()
+    {
+        modifier.area = 4;
+        modifier.overrideArea = true;
+
+        surface.BuildNavMesh();
+
+        var expectedAreaMask = 1 << 4;
+        Assert.IsTrue(NavMeshSurfaceTests.HasNavMeshAtOrigin(expectedAreaMask));
+    }
+
+    [Test]
+    public void ModifierOverrideAreaAffectsChild()
+    {
+        modifier.area = 4;
+        modifier.overrideArea = true;
+        modifier.GetComponent<MeshRenderer>().enabled = false;
+
+        var childPlane = GameObject.CreatePrimitive(PrimitiveType.Plane);
+        childPlane.transform.SetParent(modifier.transform);
+
+        surface.BuildNavMesh();
+
+        var expectedAreaMask = 1 << 4;
+        Assert.IsTrue(NavMeshSurfaceTests.HasNavMeshAtOrigin(expectedAreaMask));
+        GameObject.DestroyImmediate(childPlane);
+    }
+
+    [Test]
+    public void ModifierOverrideAreaDoesNotAffectSibling()
+    {
+        modifier.area = 4;
+        modifier.overrideArea = true;
+        modifier.GetComponent<MeshRenderer>().enabled = false;
+
+        var siblingPlane = GameObject.CreatePrimitive(PrimitiveType.Plane);
+
+        surface.BuildNavMesh();
+
+        var expectedAreaMask = 1;
+        Assert.IsTrue(NavMeshSurfaceTests.HasNavMeshAtOrigin(expectedAreaMask));
+        GameObject.DestroyImmediate(siblingPlane);
+    }
+}
+#endif