Fix generate_test_code.py unit tests
diff --git a/tests/scripts/generate_test_code.py b/tests/scripts/generate_test_code.py
index 78bbaa3..f668128 100755
--- a/tests/scripts/generate_test_code.py
+++ b/tests/scripts/generate_test_code.py
@@ -147,7 +147,7 @@
     {name}( {args} );
 }}
 '''.format(name=name,
-           unused_params='' if args_dispatch else '    (void) params;\n',
+           unused_params='' if args_dispatch else '    (void)params;\n',
            args=', '.join(args_dispatch),
            locals=locals)
     return wrapper