Replaces image.tests.js with new tests

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

test/rendering/ol/layer/image.test.js

@@ -1,106 +0,0 @@
-import Map from '../../../../src/ol/Map.js';
-import View from '../../../../src/ol/View.js';
-import ImageLayer from '../../../../src/ol/layer/Image.js';
-import {assign} from '../../../../src/ol/obj.js';
-import {get as getProjection, transform, transformExtent} from '../../../../src/ol/proj.js';
-import Static from '../../../../src/ol/source/ImageStatic.js';
-import {createXYZ} from '../../../../src/ol/tilegrid.js';
-
-
-describe('ol.rendering.layer.Image', function() {
-
-  let map;
-
-  function createMap(renderer) {
-    const MapConstructor = Map;
-    map = new MapConstructor({
-      pixelRatio: 1,
-      target: createMapDiv(50, 50),
-      view: new View({
-        center: transform(
-          [-122.416667, 37.783333], 'EPSG:4326', 'EPSG:3857'),
-        zoom: 5
-      })
-    });
-  }
-
-  afterEach(function() {
-    if (map) {
-      disposeMap(map);
-    }
-    map = null;
-  });
-
-  function waitForImages(renderer, sources, layerOptions, onImagesLoaded) {
-    const LayerConstructor = ImageLayer;
-    let imagesLoading = 0;
-    let imagesLoaded = 0;
-
-    const update = function() {
-      if (imagesLoading === imagesLoaded) {
-        onImagesLoaded();
-      }
-    };
-
-    sources.forEach(function(source) {
-      source.on('imageloadstart', function(event) {
-        imagesLoading++;
-      });
-      source.on('imageloadend', function(event) {
-        imagesLoaded++;
-        update();
-      });
-      source.on('imageloaderror', function(event) {
-        expect().fail('Image failed to load');
-      });
-
-      const options = {
-        source: source
-      };
-      assign(options, layerOptions);
-      map.addLayer(new LayerConstructor(options));
-    });
-  }
-
-  describe('single image layer', function() {
-    let source;
-
-    beforeEach(function() {
-      source = new Static({
-        url: 'rendering/ol/data/tiles/osm/5/5/12.png',
-        imageExtent: createXYZ().getTileCoordExtent(
-          [5, 5, -12 - 1]),
-        projection: getProjection('EPSG:3857')
-      });
-    });
-
-    it('tests the canvas renderer', function(done) {
-      createMap('canvas');
-      waitForImages('canvas', [source], {}, function() {
-        expectResemble(map, 'rendering/ol/layer/expected/image-canvas.png',
-          IMAGE_TOLERANCE, done);
-      });
-    });
-  });
-
-  describe('single image layer - scaled', function() {
-    let source;
-
-    beforeEach(function() {
-      source = new Static({
-        url: 'rendering/ol/data/tiles/osm/5/5/12.png',
-        imageExtent: transformExtent(
-          [-123, 37, -122, 38], 'EPSG:4326', 'EPSG:3857')
-      });
-    });
-
-    it('renders correctly', function(done) {
-      createMap('canvas');
-      waitForImages('canvas', [source], {}, function() {
-        expectResemble(map, 'rendering/ol/layer/expected/image-scaled.png',
-          IMAGE_TOLERANCE, done);
-      });
-    });
-  });
-
-});