Add basic tests for the layersHerald

test/src/herald/layersherald.test.js

@@ -0,0 +1,41 @@
+goog.provide('olgm.test.herald.Layers');
+
+describe('olgm.herald.Layers', function() {
+  // Setup constructor variables
+  var originalOl3map = new ol.Map({});
+  var gmapEl = document.createElement('div');
+  gmapEl.style.height = '100px';
+  gmapEl.style.width = '100px';
+  var originalGmap = new google.maps.Map(gmapEl);
+  var watchVector = true;
+
+  describe('constructor', function() {
+    var layersHerald = new olgm.herald.Layers(
+        originalOl3map, originalGmap, watchVector);
+
+    it('sets the Google Maps map', function() {
+      var gmap = layersHerald.gmap;
+      expect(gmap).to.be.an.instanceof(google.maps.Map);
+      expect(gmap).to.equal(originalGmap);
+    });
+
+    it('sets the OpenLayers map', function() {
+      var ol3map = layersHerald.ol3map;
+      expect(ol3map).to.be.an.instanceof(ol.Map);
+      expect(ol3map).to.equal(originalOl3map);
+    });
+  });
+
+  describe('#activate()', function() {
+    it('adds listener keys for layers added and removed', function() {
+      var layersHerald = new olgm.herald.Layers(
+          originalOl3map, originalGmap, watchVector);
+      var listenerKeys = layersHerald.listenerKeys;
+      var expectedNbListenerKeys = listenerKeys.length + 2;
+
+      layersHerald.activate();
+
+      expect(listenerKeys.length).to.equal(expectedNbListenerKeys);
+    });
+  });
+});