unit test for opening data overlay

frontend-js/src/test/js/map/CustomMap-test.js

@@ -80,6 +80,15 @@ describe('CustomMap', function() {
     assert.equal(logger.getErrors().length, 0);
   });
 
+  it("openLayout 2", function() {
+    var options = helper.createCustomMapOptions();
+    var model = options.getProject().getModel();
+    var layout = model.getLayouts()[0];
+    var map = new CustomMap(options);
+    map.openLayout(layout);
+    assert.equal(logger.getErrors().length, 0);
+  });
+
   it("openLayout (string id)", function() {
     var options = helper.createCustomMapOptions();
     var model = options.getProject().getModel();