Fixing the test :

* There is a new required parameter in OpenLayers.
* Explicitly set the type of void functions !

I also add some tests.

openlayers/openlayers-tests.ts

@@ -360,10 +360,22 @@ var imageWMS: ol.source.ImageWMS = new ol.source.ImageWMS({
 // ol.source.TileWMS
 //
 var tileWMS: ol.source.TileWMS = new ol.source.TileWMS({
+    params: {},
     serverType: stringValue,
     url:stringValue
 });
 
+//
+// ol.source.WMTS
+//
+var wmts: ol.source.WMTS = new ol.source.WMTS({
+   tileGrid: new ol.tilegrid.WMTS({}),
+   layer: "",
+   style: "",
+   matrixSet: "",
+   wrapX: true    
+});
+
 //
 // ol.animation
 //
@@ -521,3 +533,14 @@ jsonValue = geojsonFormat.writeFeaturesObject(featureArray);
 jsonValue = geojsonFormat.writeFeaturesObject(featureArray, writeOptions);
 jsonValue = geojsonFormat.writeGeometryObject(geometry);
 jsonValue = geojsonFormat.writeGeometryObject(geometry, writeOptions);
+
+//
+// ol.interactions
+//
+var modify: ol.interaction.Modify = new ol.interaction.Modify({
+    features: new ol.Collection<ol.Feature>(featureArray)
+});
+
+var draw: ol.interaction.Draw = new ol.interaction.Draw({
+    type: "Point"
+})