update header files in tests

Change-Id: Ibfffb9367349f58eeb193350bad34fdfccd8c553
diff --git a/tests/unit-tests/ca-sqlite.t.cpp b/tests/unit-tests/ca-sqlite.t.cpp
index f47bf9d..07782a6 100644
--- a/tests/unit-tests/ca-sqlite.t.cpp
+++ b/tests/unit-tests/ca-sqlite.t.cpp
@@ -19,8 +19,7 @@
  */
 
 #include "ca-detail/ca-sqlite.hpp"
-
-#include "database-fixture.hpp"
+#include "test-common.hpp"
 
 namespace ndn {
 namespace ndncert {