Replaces vectortile.tests.js with new tests

Transforms the old rendering tests for the VectorTileLayer
to the new rendering test approach.

rendering/cases/layer-vectortile-rotate-hidpi/main.js

@@ -0,0 +1,31 @@
+import Map from '../../../src/ol/Map.js';
+import View from '../../../src/ol/View.js';
+import VectorTileSource from '../../../src/ol/source/VectorTile';
+import MVT from '../../../src/ol/format/MVT';
+import {createXYZ} from '../../../src/ol/tilegrid';
+import VectorTileLayer from '../../../src/ol/layer/VectorTile';
+
+const map = new Map({
+  pixelRatio: 2,
+  layers: [
+    new VectorTileLayer({
+      source: new VectorTileSource({
+        format: new MVT(),
+        tileGrid: createXYZ(),
+        url: '/data/tiles/mapbox-streets-v6/{z}/{x}/{y}.vector.pbf',
+        transition: 0
+      })
+    })
+  ],
+  target: 'map',
+  view: new View({
+    center: [1825927.7316762917, 6143091.089223046],
+    zoom: 14
+  })
+});
+
+map.getView().setRotation(Math.PI / 4);
+render({
+  message: 'Vector tile layer rotates (hidip)',
+  tolerance: 0.01
+});