Add tests for ol.source.TileImage

2015-08-24 19:12:19 +02:00
parent c899100dab
commit 8f1aab9236
1 changed files with 94 additions and 0 deletions
--- a/test/spec/ol/source/tileimagesource.test.js
+++ b/test/spec/ol/source/tileimagesource.test.js
@@ -0,0 +1,94 @@
+goog.provide('ol.test.source.TileImageSource');
+
+describe('ol.source.TileImage', function() {
+  function createSource(opt_proj, opt_tileGrid) {
+    var proj = opt_proj || 'EPSG:3857';
+    return new ol.source.TileImage({
+      projection: proj,
+      tileGrid: opt_tileGrid ||
+          ol.tilegrid.createForProjection(proj, undefined, [2, 2]),
+      tileUrlFunction: ol.TileUrlFunction.createFromTemplate(
+          'data:image/gif;base64,R0lGODlhAQABAAAAACwAAAAAAQABAAA=')
+    });
+  }
+
+  describe('#setTileGridForProjection', function() {
+    it('uses the tilegrid for given projection', function() {
+      var source = createSource();
+      var tileGrid = ol.tilegrid.createForProjection('EPSG:4326', 3, [10, 20]);
+      source.setTileGridForProjection('EPSG:4326', tileGrid);
+      var retrieved = source.getTileGridForProjection(ol.proj.get('EPSG:4326'));
+      expect(retrieved).to.be(tileGrid);
+    });
+  });
+
+  describe('#getTile', function() {
+    it('does not do reprojection for identity', function() {
+      var source3857 = createSource('EPSG:3857');
+      var tile3857 = source3857.getTile(0, 0, -1, 1, ol.proj.get('EPSG:3857'));
+      expect(tile3857).to.be.a(ol.ImageTile);
+      expect(tile3857).not.to.be.a(ol.reproj.Tile);
+
+      var projXXX = new ol.proj.Projection({
+        code: 'XXX',
+        units: 'degrees'
+      });
+      var sourceXXX = createSource(projXXX);
+      var tileXXX = sourceXXX.getTile(0, 0, -1, 1, projXXX);
+      expect(tileXXX).to.be.a(ol.ImageTile);
+      expect(tileXXX).not.to.be.a(ol.reproj.Tile);
+    });
+
+    beforeEach(function() {
+      proj4.defs('4326_noextentnounits', '+proj=longlat +datum=WGS84 +no_defs');
+    });
+
+    afterEach(function() {
+      delete proj4.defs['4326_noextentnounits'];
+    });
+
+    it('can handle source projection without extent and units', function(done) {
+      var source = createSource('4326_noextentnounits', ol.tilegrid.createXYZ({
+        extent: [-180, -90, 180, 90],
+        tileSize: [2, 2]
+      }));
+      var tile = source.getTile(0, 0, -1, 1, ol.proj.get('EPSG:3857'));
+      expect(tile).to.be.a(ol.reproj.Tile);
+
+      tile.listen('change', function() {
+        if (tile.getState() == ol.TileState.LOADED) {
+          done();
+        }
+      });
+      tile.load();
+    });
+
+    it('can handle target projection without extent and units', function(done) {
+      var proj = ol.proj.get('4326_noextentnounits');
+      var source = createSource();
+      source.setTileGridForProjection(proj,
+          ol.tilegrid.createXYZ({
+            extent: [-180, -90, 180, 90],
+            tileSize: [2, 2]
+          }));
+      var tile = source.getTile(0, 0, -1, 1, proj);
+      expect(tile).to.be.a(ol.reproj.Tile);
+
+      tile.listen('change', function() {
+        if (tile.getState() == ol.TileState.LOADED) {
+          done();
+        }
+      });
+      tile.load();
+    });
+  });
+});
+
+goog.require('ol.ImageTile');
+goog.require('ol.Tile');
+goog.require('ol.TileState');
+goog.require('ol.TileUrlFunction');
+goog.require('ol.proj');
+goog.require('ol.proj.Projection');
+goog.require('ol.reproj.Tile');
+goog.require('ol.source.TileImage');