add test cases

Signed-off-by: Ndongwei <dongwei@kaihongdigi.com>

ace/ace_standard/src/main/js/default/pages/chart/router/index.hml

@@ -285,6 +285,7 @@
                  chart无障碍1
             </text>
             <chart id="access1" class="access1"
+                   onaccessibility="onAccessibility"
                    accessibilitygroup ="true"
                    accessibilitytext="这是div"
                    accessibilitydescription="点击此按键会弹出一个对话框"

ace/ace_standard/src/main/js/default/pages/chart/router/index.js

@@ -146,6 +146,14 @@ export default {
             }
         ]
     },
+
+    onAccessibility(event) {
+        if (event.eventType == 1) {
+            // Do Something
+        }
+        console.log("onAccessibility" + JSON.stringify(event));
+    },
+
     addData() {
         this.$refs.linechart.append({
             serial: 0,