[test] Add a missing header in mock_mlagent.h

- Add a missing header <utility> in mock_mlagent.h
- It declares `std::exchange`

Signed-off-by: Yongjoo Ahn <yongjoo1.ahn@samsung.com>

diff --git a/tests/unittest_mlagent/mock_mlagent.h b/tests/unittest_mlagent/mock_mlagent.h
index da043bd..ed69163 100644 (file)
--- a/tests/unittest_mlagent/mock_mlagent.h
+++ b/tests/unittest_mlagent/mock_mlagent.h
@@ -15,6 +15,7 @@
 
 #include <unordered_map>
 #include <vector>
+#include <utility>
 
 struct MockModel;