Replaces tile.tests.js (partially) with new tests

Transforms the old rendering tests for the TileLayer
to the new rendering test approach.
The render-listener test is kept in the old format for know.

rendering/cases/layer-tile-none-square/main.js

@@ -0,0 +1,30 @@
+import Map from '../../../src/ol/Map.js';
+import View from '../../../src/ol/View.js';
+import TileLayer from '../../../src/ol/layer/Tile.js';
+import XYZ from '../../../src/ol/source/XYZ';
+import {createXYZ} from '../../../src/ol/tilegrid.js';
+
+const center = [-10997148, 4569099];
+
+const layer = new TileLayer({
+  source: new XYZ({
+    url: '/data/tiles/512x256/{z}/{x}/{y}.png',
+    tileGrid: createXYZ({
+      tileSize: [512, 256]
+    }),
+    transition: 0
+  })
+});
+
+const map = new Map({
+  target: 'map',
+  pixelRatio: 1,
+  view: new View({
+    center: center,
+    zoom: 5
+  })
+});
+
+map.addLayer(layer);
+
+render();