File MapvLayerSpec.js

test/mapboxgl/overlay/MapvLayerSpec.js:None–None

import {MapvLayer} from '../../../src/mapboxgl/overlay/MapvLayer';
import mapboxgl from 'mapbox-gl';
import {utilCityCenter, DataSet} from 'mapv';
import mbglmap, { revertCRS } from '../../tool/mock_mapboxgl_map';