Add unit tests for ol.ImageTile

openlayers · Jun 8, 2016 · a598737 · a598737
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diff --git a/test/spec/ol/data/osm-0-0-0.png b/test/spec/ol/data/osm-0-0-0.png
diff --git a/test/spec/ol/imagetile.test.js b/test/spec/ol/imagetile.test.js
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+goog.provide('ol.test.ImageTile');
+
+describe('ol.ImageTile', function() {
+
+  describe('#load()', function() {
+
+    it('can load idle tile', function(done) {
+      var tileCoord = [0, 0, 0];
+      var state = ol.TileState.IDLE;
+      var src = 'spec/ol/data/osm-0-0-0.png';
+      var tileLoadFunction = ol.source.Image.defaultImageLoadFunction;
+      var tile = new ol.ImageTile(tileCoord, state, src, null, tileLoadFunction);
+
+      var previousState = tile.getState()
+
+      ol.events.listen(tile, ol.events.EventType.CHANGE, function(event) {
+        var state = tile.getState();
+        if (previousState == ol.TileState.IDLE) {
+          expect(state).to.be(ol.TileState.LOADING);
+        } else if (previousState == ol.TileState.LOADING) {
+          expect(state).to.be(ol.TileState.LOADED);
+          done();
+        } else {
+          expect().fail();
+        }
+        previousState = state;
+      });
+
+      tile.load();
+    });
+
+    it('can load error tile', function(done) {
+      var tileCoord = [0, 0, 0];
+      var state = ol.TileState.ERROR;
+      var src = 'spec/ol/data/osm-0-0-0.png';
+      var tileLoadFunction = ol.source.Image.defaultImageLoadFunction;
+      var tile = new ol.ImageTile(tileCoord, state, src, null, tileLoadFunction);
+
+      var previousState = tile.getState()
+
+      ol.events.listen(tile, ol.events.EventType.CHANGE, function(event) {
+        var state = tile.getState();
+        if (previousState == ol.TileState.ERROR) {
+          expect(state).to.be(ol.TileState.LOADING);
+        } else if (previousState == ol.TileState.LOADING) {
+          expect(state).to.be(ol.TileState.LOADED);
+          done();
+        } else {
+          expect().fail();
+        }
+        previousState = state;
+      });
+
+      tile.load();
+    });
+
+  });
+
+});
+
+goog.require('ol.events');
+goog.require('ol.events.EventType');
+goog.require('ol.source.Image');
+goog.require('ol.ImageTile');
+goog.require('ol.TileState');