test-error-helpers.c: In function ‘test_error_helpers_connection_error’:
test-error-helpers.c:36:39: error: comparison of integer expressions of different signedness: ‘guint’ {aka ‘unsigned int’} and ‘gint’ {aka ‘int’} [-Werror=sign-compare]
36 | for (i = enum_class->minimum; i <= enum_class->maximum; i++) { \
| ^~