【fix】优化测试命令，在ci跑测试时不autowatch。测试结束时删除穿件的节点

Author: songyumeng

package.json

@@ -32,7 +32,7 @@
     "package": "node ./build/pack.js",
     "package-debug": "node ./build/pack.js - debug",
     "test": "npm install ./src/common && karma start ./test/karma.conf.js",
-    "citest": "npm install ./src/common && karma start ./test/karma.conf.js --single-run",
+    "citest": "npm install ./src/common && karma start ./test/karma.conf.js --single-run --no-auto-watch",
     "exampletest": "nightwatch --config ./examples-test/nightwatch.json",
     "build-docs": "npm run build-docs-leaflet&&npm run build-docs-openlayers&&npm run build-docs-mapboxgl&&npm run build-docs-classic",
     "build-docs-leaflet": "jsdoc -c ./build/jsdocs/leaflet/docs.json -R ./build/jsdocs/leaflet/index.md",

test/common/components/chart/ChartViewSpec.js

@@ -33,6 +33,13 @@ describe('ChartView', () => {
     }
     var chartView = new ChartView("chart", options);
 
+    afterAll(() => {
+        if (chartView.echart) {
+            chartView.echart.clear();
+        }
+        window.document.body.removeChild(chartDiv);
+    });
+
     it('constructor, _fillDataToView', () => {
         expect(chartView.domID).toBe("chart");
         expect(chartView.chartType).toBe("line");