onvalid background overlay doesn't crash system

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

@@ -958,17 +958,6 @@ describe('CustomMap', function () {
   });
 
   describe("init", function () {
-    it("invalid background overlay", function () {
-      var options = helper.createCustomMapOptions();
-      ServerConnector.getSessionData(options.getProject()).setSelectedBackgroundOverlay("bla");
-      var map = new CustomMap(options);
-      return map.init().then(function () {
-        assert.false("Error expected");
-      }, function () {
-        map.destroy();
-      })
-    });
-
     it("non-existing background overlay", function () {
       var options = helper.createCustomMapOptions();
       ServerConnector.getSessionData(options.getProject()).setSelectedBackgroundOverlay(-1);