wscript: fix the target dylib name to ndn-cert

Change-Id: Id8620f41124549a81553bd787a6c3214a2f21c4e
diff --git a/tests/wscript b/tests/wscript
index 23518b4..685a0bf 100644
--- a/tests/wscript
+++ b/tests/wscript
@@ -12,7 +12,7 @@
         name='tests-main',
         features='cxx',
         source="main.cpp",
-        use='objects BOOST',
+        use='ndn-cert BOOST',
         defines=['BOOST_TEST_MODULE=\"NDNCERT Tests\"']
         )
 
@@ -21,7 +21,7 @@
         source=bld.path.ant_glob(['*.cpp', 'unit-tests/**/*.cpp'],
                                  excl=['main.cpp']),
         features=['cxx', 'cxxprogram'],
-        use='objects tests-main',
+        use='ndn-cert tests-main',
         includes=['.'],
         install_path=None,
         defines='TMP_TESTS_PATH=\"%s/tmp-tests\"' % bld.bldnode,