TestBoundingSphere: test equals() and isSimilar()

jme3-core/src/test/java/com/jme3/bounding/TestBoundingSphere.java

@@ -41,6 +41,57 @@
  * @author Stephen Gold
  */
 public class TestBoundingSphere {
+    /**
+     * Verify that equals() behaves as expected.
+     */
+    @Test
+    public void testEquals() {
+        BoundingSphere bs1 = new BoundingSphere(0f, new Vector3f(3f, 4f, 5f));
+        BoundingSphere bs2 = new BoundingSphere(-0f, new Vector3f(3f, 4f, 5f));
+
+        BoundingSphere bs3 = new BoundingSphere(1f, new Vector3f(3f, 0f, 2f));
+        BoundingSphere bs4 = new BoundingSphere(1f, new Vector3f(3f, -0f, 2f));
+
+        BoundingSphere bs5 = new BoundingSphere(2f, new Vector3f(4f, 5f, 6f));
+        BoundingSphere bs6 = (BoundingSphere) bs5.clone();
+        bs6.setCheckPlane(1);
+
+        // Clones are equal to their base instances:
+        Assert.assertEquals(bs1, bs1.clone());
+        Assert.assertEquals(bs2, bs2.clone());
+        Assert.assertEquals(bs3, bs3.clone());
+        Assert.assertEquals(bs4, bs4.clone());
+        Assert.assertEquals(bs5, bs5.clone());
+        Assert.assertEquals(bs6, bs6.clone());
+
+        Assert.assertNotEquals(bs1, bs2); // because their radii differ
+        Assert.assertNotEquals(bs3, bs4); // because their centers differ
+        Assert.assertEquals(bs5, bs6); // because check planes are ignored
+    }
+
+    /**
+     * Verify that isSimilar() behaves as expected.
+     */
+    @Test
+    public void testIsSimilar() {
+        BoundingSphere bs1 = new BoundingSphere(0f, new Vector3f(3f, 4f, 5f));
+        BoundingSphere bs2 = new BoundingSphere(0.1f, new Vector3f(3f, 4f, 5f));
+
+        BoundingSphere bs3 = new BoundingSphere(1f, new Vector3f(3f, 4f, 2f));
+        BoundingSphere bs4 = new BoundingSphere(1f, new Vector3f(3f, 3.9f, 2f));
+
+        BoundingSphere bs5 = new BoundingSphere(2f, new Vector3f(4f, 5f, 6f));
+        BoundingSphere bs6 = (BoundingSphere) bs5.clone();
+        bs6.setCheckPlane(1);
+
+        Assert.assertFalse(bs1.isSimilar(bs2, 0.09999f));
+        Assert.assertTrue(bs1.isSimilar(bs2, 0.10001f));
+
+        Assert.assertFalse(bs3.isSimilar(bs4, 0.09999f));
+        Assert.assertTrue(bs3.isSimilar(bs4, 0.10001f));
+
+        Assert.assertTrue(bs5.isSimilar(bs6, 0f)); // check planes are ignored
+    }
 
     /**
      * Verify that an infinite bounding sphere can be merged with a very