Support multiple sources for layers

2022-01-10 20:37:50 +01:00
parent 1a8df049e4
commit 0004b2594d
20 changed files with 348 additions and 67 deletions
--- a/test/browser/spec/ol/source.test.js
+++ b/test/browser/spec/ol/source.test.js
@@ -0,0 +1,41 @@
+import TileGrid from '../../../../src/ol/tilegrid/TileGrid.js';
+import XYZ from '../../../../src/ol/source/XYZ.js';
+import {createXYZ} from '../../../../src/ol/tilegrid.js';
+import {get} from '../../../../src/ol/proj.js';
+import {sourcesFromTileGrid} from '../../../../src/ol/source.js';
+
+describe('ol/source', function () {
+  describe('sourcesFromTileGrid()', function () {
+    it('returns a function that returns the correct source', function () {
+      const resolutions = createXYZ({maxZoom: 1}).getResolutions();
+      const tileGrid = new TileGrid({
+        extent: get('EPSG:3857').getExtent(),
+        resolutions: [resolutions[1]],
+        tileSizes: [[256, 512]],
+      });
+      const factory = function (tileCoord) {
+        return new XYZ({
+          url: tileCoord.join('-') + '/{z}/{x}/{y}.png',
+          tileGrid: new TileGrid({
+            resolutions,
+            minZoom: tileCoord[0],
+            maxZoom: tileCoord[0] + 1,
+            extent: tileGrid.getTileCoordExtent(tileCoord),
+            origin: [-20037508.342789244, 20037508.342789244],
+          }),
+        });
+      };
+      const getSources = sourcesFromTileGrid(tileGrid, factory);
+      expect(getSources(tileGrid.getExtent(), resolutions[1]).length).to.be(2);
+      expect(
+        getSources(
+          [-10000, -10000, -5000, 10000],
+          resolutions[1]
+        )[0].getUrls()[0]
+      ).to.be('0-0-0/{z}/{x}/{y}.png');
+      expect(
+        getSources([5000, -10000, 10000, 10000], resolutions[1])[0].getUrls()[0]
+      ).to.be('0-1-0/{z}/{x}/{y}.png');
+    });
+  });
+});