【fix】mapboxgl版本升级，修复测试的验证 review by liqian

Author: songyumeng

test/mapboxgl/mapping/WebMapSpec.js

@@ -48,8 +48,10 @@ describe('mapboxgl_WebMap', () => {
 	        var map = datavizWebmap.map;
 
 	        expect(map).not.toBe(null);
-	        expect(map.getZoom()).toBe(0);
-	        expect(map.getCenter()).toEqual(new mapboxgl.LngLat(110, 4.21495724756123));
+					expect(map.getZoom()).toBe(0);
+					var center = map.getCenter();
+					expect(center.lat.toFixed(4)).toEqual(4.2149);
+					expect(center.lng.toFixed(4)).toEqual(110);
 	        expect(datavizWebmap.mapParams.title).toBe('tianditu');
 	        expect(datavizWebmap.mapParams.description).toBe('');
 	        datavizWebmap.map = null;