Add tests

test/spec/ol/source/tilejsonsource.test.js

@@ -0,0 +1,64 @@
+goog.provide('ol.test.source.TileJSON');
+
+
+describe('ol.source.TileJSON', function() {
+
+  describe('tileUrlFunction', function() {
+
+    var source, tileGrid;
+
+    beforeEach(function(done) {
+      source = new ol.source.TileJSON({
+        url: 'http://api.tiles.mapbox.com/v3/mapbox.geography-class.jsonp'
+      });
+      var key = source.on('change', function() {
+        if (source.getState() === 'ready') {
+          source.unByKey(key);
+          tileGrid = source.getTileGrid();
+          done();
+        }
+      });
+    });
+
+    it('uses the correct tile coordinates', function() {
+
+      var coordinate = [829330.2064098881, 5933916.615134273];
+      var regex = /\/([0-9]*\/[0-9]*\/[0-9]*)\.png$/;
+      var tileUrl;
+
+      tileUrl = source.tileUrlFunction(
+          tileGrid.getTileCoordForCoordAndZ(coordinate, 0));
+      expect(tileUrl.match(regex)[1]).to.eql('0/0/0');
+
+      tileUrl = source.tileUrlFunction(
+          tileGrid.getTileCoordForCoordAndZ(coordinate, 1));
+      expect(tileUrl.match(regex)[1]).to.eql('1/1/0');
+
+      tileUrl = source.tileUrlFunction(
+          tileGrid.getTileCoordForCoordAndZ(coordinate, 2));
+      expect(tileUrl.match(regex)[1]).to.eql('2/2/1');
+
+      tileUrl = source.tileUrlFunction(
+          tileGrid.getTileCoordForCoordAndZ(coordinate, 3));
+      expect(tileUrl.match(regex)[1]).to.eql('3/4/2');
+
+      tileUrl = source.tileUrlFunction(
+          tileGrid.getTileCoordForCoordAndZ(coordinate, 4));
+      expect(tileUrl.match(regex)[1]).to.eql('4/8/5');
+
+      tileUrl = source.tileUrlFunction(
+          tileGrid.getTileCoordForCoordAndZ(coordinate, 5));
+      expect(tileUrl.match(regex)[1]).to.eql('5/16/11');
+
+      tileUrl = source.tileUrlFunction(
+          tileGrid.getTileCoordForCoordAndZ(coordinate, 6));
+      expect(tileUrl.match(regex)[1]).to.eql('6/33/22');
+
+    });
+
+  });
+
+});
+
+goog.require('ol.TileCoord');
+goog.require('ol.source.TileJSON');