diff --git a/test/unittest/mock/assistant.h b/test/unittest/mock/assistant.h
index 19652f348694beb65b595bafae1e6be4eb5586bf..2c691c99a143d1f052eea07b115e29d813344423 100644
--- a/test/unittest/mock/assistant.h
+++ b/test/unittest/mock/assistant.h
@@ -39,7 +39,7 @@ public:
         = 0;
     virtual napi_status napi_get_reference_value(napi_env, napi_ref, napi_value*) = 0;
     virtual napi_status napi_get_named_property(napi_env, napi_value, const char*, napi_value*) = 0;
-    virtual napi_status napi_send_event(napi_env, const std::function<void()>, napi_event_priority) = 0;
+    virtual napi_status napi_send_event(napi_env, const std::function<void()>&, napi_event_priority) = 0;
     virtual napi_status napi_get_value_int32(napi_env, napi_value, int32_t*) = 0;
     virtual napi_status napi_get_value_int64(napi_env, napi_value, int64_t*) = 0;
     virtual napi_status napi_create_string_utf8(napi_env, const char*, size_t, napi_value*) = 0;
@@ -74,7 +74,7 @@ public:
         napi_value*));
     MOCK_METHOD3(napi_get_reference_value, napi_status(napi_env, napi_ref, napi_value*));
     MOCK_METHOD4(napi_get_named_property, napi_status(napi_env, napi_value, const char*, napi_value*));
-    MOCK_METHOD3(napi_send_event, napi_status(napi_env, const std::function<void()>, napi_event_priority));
+    MOCK_METHOD3(napi_send_event, napi_status(napi_env, const std::function<void()>&, napi_event_priority));
     MOCK_METHOD3(napi_get_value_int32, napi_status(napi_env, napi_value, int32_t*));
     MOCK_METHOD3(napi_get_value_int64, napi_status(napi_env, napi_value, int64_t*));
     MOCK_METHOD3(napi_create_int64, napi_status(napi_env, int64_t, napi_value*));
diff --git a/test/unittest/mock/js_native_api_mock.cpp b/test/unittest/mock/js_native_api_mock.cpp
index 855dbc4dbf4fcbcd488f51067c4d3dc39b579c34..04f96c58cf68e61aa5e263b4bda23530aec2da87 100644
--- a/test/unittest/mock/js_native_api_mock.cpp
+++ b/test/unittest/mock/js_native_api_mock.cpp
@@ -139,7 +139,7 @@ napi_status napi_get_value_bool(napi_env env, napi_value value, bool* result)
     return OHOS::FileAccessFwk::Assistant::ins_->napi_get_value_bool(env, value, result);
 }
 
-napi_status napi_send_event(napi_env env, const std::function<void()> cb, napi_event_priority priority)
+napi_status napi_send_event(napi_env env, const std::function<void()>& cb, napi_event_priority priority)
 {
     if (cb) {
         cb();