!1821 fix ActsGetWantAllTest run failed.

Merge pull request !1821 from zhongjianfei/zz0208

aafwk/aafwk_standard/want/actsgetwantalltest/entry/src/main/js/default/pages/index/index.js

@@ -20,7 +20,7 @@ import {Core, ExpectExtend} from 'deccjsunit/index'
 
 const injectRef = Object.getPrototypeOf(global) || global
 injectRef.regeneratorRuntime = require('@babel/runtime/regenerator')
-
+var once = true
 export default {
     data: {
         title: ""
@@ -29,6 +29,8 @@ export default {
         this.title = this.$t('strings.world');
     },
     onShow() {
+        if (once) {
+            once = false
             console.info('onShow finish')
             const core = Core.getInstance()
             const expectExtend = new ExpectExtend({
@@ -42,6 +44,7 @@ export default {
 
             require('../../../test/List.test')
             core.execute()
+        }
     },
     onReady() {
     },