Fix an undefined issue in UT

Change-Id: Id9bbacb752c142f712e4e5e752b74c5bac848d81
Signed-off-by: wangqi02 <wangqi02@inspur.com>
diff --git a/tests/unit/AppHeader.spec.js b/tests/unit/AppHeader.spec.js
index 93ad1f4..ed78f03 100644
--- a/tests/unit/AppHeader.spec.js
+++ b/tests/unit/AppHeader.spec.js
@@ -13,6 +13,7 @@
     'global/getServerStatus': jest.fn(),
     'eventLog/getEventLogData': jest.fn(),
     'authentication/resetStoreState': jest.fn(),
+    'global/getSystemInfo': jest.fn(),
   };
 
   const store = new Vuex.Store({ actions });