Replaces tilewms.tests.js with new tests

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

test/rendering/ol/source/tilewms.test.js

@@ -1,112 +0,0 @@
-import Map from '../../../../src/ol/Map.js';
-import View from '../../../../src/ol/View.js';
-import TileLayer from '../../../../src/ol/layer/Tile.js';
-import TileWMS from '../../../../src/ol/source/TileWMS.js';
-
-describe('ol.rendering.source.TileWMS', function() {
-
-  function tilesLoaded(source, callback) {
-    let loading = 0;
-
-    source.on('tileloadstart', function(event) {
-      loading++;
-    });
-    source.on('tileloadend', function(event) {
-      loading--;
-      if (loading == 0) {
-        callback();
-      }
-    });
-    source.on('tileloaderror', function(event) {
-      expect().fail('Tile failed to load');
-    });
-
-  }
-
-  let map;
-  function createMap(renderer, pixelRatio) {
-    const MapConstructor = Map;
-
-    map = new MapConstructor({
-      target: createMapDiv(200, 200),
-      pixelRatio: pixelRatio,
-      view: new View({
-        center: [0, 0],
-        zoom: 5
-      })
-    });
-  }
-
-  afterEach(function() {
-    if (map) {
-      disposeMap(map);
-    }
-    map = null;
-  });
-
-  function createSource(gutter) {
-    return new TileWMS({
-      params: {
-        'LAYERS': 'layer'
-      },
-      gutter: gutter,
-      url: 'rendering/ol/data/tiles/wms/wms' + gutter + '.png',
-      transition: 0
-    });
-  }
-
-
-  describe('0px gutter, 1 pixel ratio', function() {
-    it('tests the canvas renderer', function(done) {
-      createMap('canvas', 1);
-      const source = createSource(0);
-      tilesLoaded(source, function() {
-        expectResemble(map, 'rendering/ol/source/expected/0_1.canvas.png', IMAGE_TOLERANCE, done);
-      });
-      map.addLayer(new TileLayer({
-        source: source
-      }));
-    });
-  });
-
-  describe('0px gutter, 2 pixel ratio', function() {
-    it('tests the canvas renderer', function(done) {
-      createMap('canvas', 2);
-      const source = createSource(0);
-      tilesLoaded(source, function() {
-        expectResemble(map, 'rendering/ol/source/expected/0_2.canvas.png', IMAGE_TOLERANCE, done);
-      });
-      map.addLayer(new TileLayer({
-        source: source
-      }));
-    });
-  });
-
-
-  describe('20px gutter, 1 pixel ratio', function() {
-    it('tests the canvas renderer', function(done) {
-      createMap('canvas', 1);
-      const source = createSource(20);
-      tilesLoaded(source, function() {
-        expectResemble(map, 'rendering/ol/source/expected/20_1.canvas.png', IMAGE_TOLERANCE, done);
-      });
-      map.addLayer(new TileLayer({
-        source: source
-      }));
-    });
-  });
-
-  describe('20px gutter, 2 pixel ratio', function() {
-    it('tests the canvas renderer', function(done) {
-      createMap('canvas', 2);
-      const source = createSource(20);
-      tilesLoaded(source, function() {
-        expectResemble(map, 'rendering/ol/source/expected/20_2.canvas.png', IMAGE_TOLERANCE, done);
-      });
-      map.addLayer(new TileLayer({
-        source: source
-      }));
-    });
-  });
-
-});