Add SPDX annotation

Related: OS#3515
Change-Id: I3719bd8dc015569ecd81928fc079e27593cdca09
diff --git a/tests/CommonLibs/LogTest.cpp b/tests/CommonLibs/LogTest.cpp
index 5e51ce7..0087070 100644
--- a/tests/CommonLibs/LogTest.cpp
+++ b/tests/CommonLibs/LogTest.cpp
@@ -2,6 +2,7 @@
 * Copyright 2009 Free Software Foundation, Inc.
 * Copyright 2010 Kestrel Signal Processing, Inc.
 *
+* SPDX-License-Identifier: AGPL-3.0+
 *
 * This software is distributed under the terms of the GNU Affero Public License.
 * See the COPYING file in the main directory for details.