anchor.diff:      });
   
   
  -    test('#getCenter', () {
  +    group('#getCenter', () {
         test('throws if not set before', () {
           expect(map.getCenter(), throwsException);
         });
  
positive.code: 
        test('emits a move event if the size has changed', () {
          var spy = sinon.spy();
          map.on('move', spy);
  
          container.style.width = (origWidth + 5) + 'px';
          map.invalidateSize();
  
          expect(spy.called).to.be.ok();
  
negative.code:       test('does not fire a layerremove if the layer was not added', () {
          var layer = { onAdd: sinon.spy(), onRemove: sinon.spy() },
              spy = sinon.spy();
          map.on(EventType.LAYERREMOVE, spy);
          map.setView(new LatLng(0, 0), 0);
          map.removeLayer(layer);
          expect(spy.called).not.to.be.ok();
        });
  