【update】reRender更名为refresh，增加UT

review by qiul

Author: chenguanglin

src/openlayers/mapping/WebMap.js

@@ -107,12 +107,14 @@ export class WebMap extends Observable {
         this.tiandituKey = options.tiandituKey;
         //计数叠加图层，处理过的数量（成功和失败都会计数）
         this.layerAdded = 0;
+        this.layers = [];
         this.events = new Events(this, null, ["updateDataflowFeature"], true);
         this.createMap(options.mapSetting);
         this.createWebmap();
     }
 
     /**
+     * @private
      * @function ol.supermap.WebMap.prototype._removeBaseLayer
      * @description 移除底图
      */
@@ -127,6 +129,7 @@ export class WebMap extends Observable {
     }
 
     /**
+     * @private
      * @function ol.supermap.WebMap.prototype._removeLayers
      * @description 移除叠加图层
      */
@@ -155,10 +158,11 @@ export class WebMap extends Observable {
     }
 
     /**
+     * @private
      * @function ol.supermap.WebMap.prototype.clear
      * @description 清空地图
      */
-    clear() {
+    _clear() {
         // 比例尺
         this.scales = [];
         // 分辨率
@@ -173,11 +177,12 @@ export class WebMap extends Observable {
     }
 
     /**
-     * @function ol.supermap.WebMap.prototype.reRender
+     * @function ol.supermap.WebMap.prototype.refresh
+     * @version 10.1.0
      * @description 重新渲染地图
      */
-    reRender() {
-        this.clear();
+    refresh() {
+        this._clear();
         this.createWebmap();
     }
 

test/openlayers/mapping/WebMapSpec.js

@@ -981,4 +981,28 @@ describe('openlayers_WebMap', () => {
         }, 1000)
     });
 
+    it('refresh', (done) => {
+        let refresh = false;
+        spyOn(FetchRequest, 'get').and.callFake((url) => {
+            if (url.indexOf('map.json') > -1) {
+                var mapJson = refresh ? datavizWebMap_BAIDU : datavizWebMap_TIANDITU_VEC;
+                return Promise.resolve(new Response(mapJson));
+            }
+            return Promise.resolve();
+        });
+        var datavizWebmap = new WebMap(id, {
+            server: server
+        });
+
+        setTimeout(() => {
+            expect(datavizWebmap.baseLayer.name).toEqual('天地图');
+            refresh = true;
+            datavizWebmap.refresh();
+            setTimeout(() => {
+                expect(datavizWebmap.baseLayer.name).toEqual('百度地图');
+                done();
+            }, 1000);            
+        }, 1000)
+    })
+
 });