LinearRing.getCentroid: return null if the geometry has no components. r=pgiraud (closes #2530)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10116 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2010-03-19 09:05:12 +00:00
parent c54dc76d15
commit 37e0c0b4f5
2 changed files with 22 additions and 3 deletions
@@ -112,7 +112,24 @@
        var ring = new OpenLayers.Geometry.LinearRing(components);
        t.eq(ring.getLength(), 40, "getLength returns the correct perimiter");
    }
-    
+
+    function test_LinearRing_getCentroid(t) {
+        t.plan(2);
+        var components = [
+            new OpenLayers.Geometry.Point(0,0), 
+            new OpenLayers.Geometry.Point(0,10),
+            new OpenLayers.Geometry.Point(10,10), 
+            new OpenLayers.Geometry.Point(10,0)
+        ];
+        var ring = new OpenLayers.Geometry.LinearRing(components);
+        var centroid = ring.getCentroid();
+        t.ok(centroid.x === 5 && centroid.y === 5, "getCentroid returns the correct centroid");
+        ring.destroy();
+
+        ring = new OpenLayers.Geometry.LinearRing();
+        t.eq(ring.getCentroid(), null, "getCentroid returns null if no components");     
+    }
+
    function test_LinearRing_move(t) {

        var nvert = 4,