Replaces text.tests.js with new tests

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

rendering/cases/text-style-overlap/main.js

@@ -0,0 +1,104 @@
+import Map from '../../../src/ol/Map.js';
+import View from '../../../src/ol/View.js';
+import Feature from '../../../src/ol/Feature.js';
+import Point from '../../../src/ol/geom/Point.js';
+import VectorLayer from '../../../src/ol/layer/Vector.js';
+import VectorSource from '../../../src/ol/source/Vector.js';
+import Text from '../../../src/ol/style/Text.js';
+import Style from '../../../src/ol/style/Style.js';
+import Fill from '../../../src/ol/style/Fill.js';
+import Stroke from '../../../src/ol/style/Stroke.js';
+import LineString from '../../../src/ol/geom/LineString.js';
+
+const nicePath = [
+  20, 33, 40, 31, 60, 30, 80, 31, 100, 33, 120, 37, 140, 39, 160, 40,
+  180, 39, 200, 37, 220, 33, 240, 31, 260, 30, 280, 31, 300, 33
+];
+
+const vectorSource = new VectorSource();
+const pointStyle = new Style({
+  text: new Text({
+    text: 'Point Label',
+    fill: new Fill({
+      color: 'red'
+    }),
+    stroke: new Stroke({
+      color: 'black'
+    })
+  })
+});
+const lineStyle = new Style({
+  stroke: new Stroke({color: 'blue'}),
+  text: new Text({
+    text: 'Line Label',
+    fill: new Fill({
+      color: 'red'
+    }),
+    stroke: new Stroke({
+      color: 'black'
+    }),
+    placement: 'line'
+  })
+});
+
+const pointFeature1 = new Feature({
+  geometry: new Point([160, 100])
+});
+pointFeature1.setStyle(pointStyle.clone());
+pointFeature1.getStyle().getText().setText('POINT ONE');
+vectorSource.addFeature(pointFeature1);
+
+const pointFeature2 = new Feature({
+  geometry: new Point([170, 105])
+});
+pointFeature2.setStyle(pointStyle.clone());
+pointFeature2.getStyle().getText().setText('POINT TWO');
+pointFeature2.getStyle().getText().setFill(new Fill({color: 'green'}));
+vectorSource.addFeature(pointFeature2);
+
+const pointFeature3 = new Feature({
+  geometry: new Point([150, 95])
+});
+pointFeature3.setStyle(pointStyle.clone());
+pointFeature3.getStyle().getText().setText('POINT THREE');
+pointFeature3.getStyle().getText().setFill(new Fill({color: 'yellow'}));
+vectorSource.addFeature(pointFeature3);
+
+const lineString1 = new LineString(nicePath, 'XY');
+const lineFeature1 = new Feature({geometry: lineString1});
+lineFeature1.setStyle(lineStyle);
+lineFeature1.getStyle().getText().setText('LINE ONE');
+vectorSource.addFeature(lineFeature1);
+
+const lineString2 = lineString1.clone();
+lineString2.translate(10, 10);
+const lineFeature2 = new Feature({geometry: lineString2});
+lineFeature2.setStyle(lineStyle.clone());
+lineFeature2.getStyle().getText().setText('LINE TWO');
+lineFeature2.getStyle().getText().setFill(new Fill({color: 'green'}));
+vectorSource.addFeature(lineFeature2);
+
+const lineString3 = lineString1.clone();
+lineString3.translate(-10, 10);
+const lineFeature3 = new Feature({geometry: lineString3});
+lineFeature3.setStyle(lineStyle.clone());
+lineFeature3.getStyle().getText().setText('LINE THREE');
+lineFeature3.getStyle().getText().setFill(new Fill({color: 'yellow'}));
+vectorSource.addFeature(lineFeature3);
+
+const map = new Map({
+  pixelRatio: 1,
+  layers: [
+    new VectorLayer({
+      source: vectorSource
+    })
+  ],
+  target: 'map',
+  view: new View({
+    center: [0, 0],
+    resolution: 1
+  })
+});
+map.getView().fit(vectorSource.getExtent());
+
+render({tolerance: 0.02});