Make rendercomplete work with vector sources without loader

test/spec/ol/map.test.js

@@ -4,7 +4,7 @@ import Map from '../../../src/ol/Map.js';
 import MapEvent from '../../../src/ol/MapEvent.js';
 import Overlay from '../../../src/ol/Overlay.js';
 import View from '../../../src/ol/View.js';
-import LineString from '../../../src/ol/geom/LineString.js';
+import {LineString, Point} from '../../../src/ol/geom';
 import {TOUCH} from '../../../src/ol/has.js';
 import {focus} from '../../../src/ol/events/condition.js';
 import {defaults as defaultInteractions} from '../../../src/ol/interaction.js';
@@ -220,6 +220,13 @@ describe('ol.Map', function() {
               url: 'spec/ol/data/point.json',
               format: new GeoJSON()
             })
+          }),
+          new VectorLayer({
+            source: new VectorSource({
+              features: [
+                new Feature(new Point([0, 0]))
+              ]
+            })
           })
         ]
       });