Adding tests for Loc.add.

test/ol.html

@@ -78,6 +78,7 @@
   <script type="text/javascript" src="spec/ol/UnreferencedBounds.test.js"></script>
   <script type="text/javascript" src="spec/ol/Projection.test.js"></script>
   <script type="text/javascript" src="spec/ol/Bounds.test.js"></script>
+  <script type="text/javascript" src="spec/ol/Loc.test.js"></script>
   <script type="text/javascript" src="spec/ol/Tile.test.js"></script>
   <script type="text/javascript" src="spec/ol/TileSet.test.js"></script>
   <script type="text/javascript" src="spec/ol/TileCache.test.js"></script>

test/spec/ol/Loc.test.js

@@ -0,0 +1,30 @@
+describe('ol.Loc', function() {
+    
+    it("should be easy to get a new location with deltas added to coordinates", function() {
+        var loc, newLoc;
+        
+        loc = new ol.Loc(1, 2, 3);
+        newLoc = loc.add(1, 2, 3);
+        expect(newLoc.getX()).toBe(2);
+        expect(newLoc.getY()).toBe(4);
+        expect(newLoc.getZ()).toBe(6);
+        
+        loc = new ol.Loc(1, 2);
+        newLoc =loc.add(1, 2);
+        expect(newLoc.getX()).toBe(2);
+        expect(newLoc.getY()).toBe(4);
+        expect(newLoc.getZ()).toBeUndefined();
+        
+        newLoc = loc.add(0, 0, 1);
+        expect(newLoc.getZ()).toBeUndefined();
+    });
+    
+    it("should be immutable", function() {
+        var loc = new ol.Loc(1, 2, 3);
+        loc.add(1, 2, 3);
+        expect(loc.getX()).toBe(1);
+        expect(loc.getY()).toBe(2);
+        expect(loc.getZ()).toBe(3);
+    });
+    
+});