text: describe("Adding layers", function () {
      var map_with_layers, single_layer, multiple_layers = [];
  
      beforeEach(function () {
          map_with_layers = map_with_layers || new GMaps({
              el: '#map-with-layers',
              lat: -12.0433,
              lng: -77.0283,
              zoom: 12
          });
      });
  
      describe("Single layer", function () {
          beforeEach(function () {
              single_layer = single_layer || map_with_layers.addLayer('traffic');
          })
  
          it("should be added in the current map", function () {
              expect(single_layer.getMap()).toEqual(map_with_layers.map);
          });
  
          it("should be removed from the current map", function () {
              map_with_layers.removeLayer('traffic');
  
              expect(single_layer.getMap()).toBeNull();
          });
      });
  
      describe("Multiple layers", function () {
          beforeEach(function () {
              if (multiple_layers.length == 0) {
                  multiple_layers.push(map_with_layers.addLayer('transit'));
                  multiple_layers.push(map_with_layers.addLayer('bicycling'));
              }
          });
  
          it("should be added in the current map", function () {
              expect(multiple_layers[0].getMap()).toEqual(map_with_layers.map);
              expect(multiple_layers[1].getMap()).toEqual(map_with_layers.map);
          });
  
          it("should be removed from the current map", function () {
              map_with_layers.removeLayer('transit');
              map_with_layers.removeLayer('bicycling');
  
              expect(multiple_layers[0].getMap()).toBeNull();
              expect(multiple_layers[1].getMap()).toBeNull();
          });
      });
  });