GCM in the cipher layer, step 1

- no support for additional data
- no support for tag
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index cac80a4..20f3c8d 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -44,6 +44,7 @@
 add_test_suite(cipher cipher.blowfish)
 add_test_suite(cipher cipher.camellia)
 add_test_suite(cipher cipher.des)
+add_test_suite(cipher cipher.gcm)
 add_test_suite(cipher cipher.null)
 add_test_suite(cipher cipher.padding)
 add_test_suite(ctr_drbg)