exclude :test_at, "needs investigation"
exclude :test_at_rational, "needs investigation"
exclude :test_marshal_nsec_191, "needs investigation"
exclude :test_new, "needs investigation"
exclude :test_plus_type, "needs investigation"
exclude :test_security_error, "needs investigation"
exclude :test_strftime, "needs investigation"
exclude :test_time_add, "needs investigation"
exclude :test_time_interval, "needs investigation"
exclude :test_to_r, "needs investigation"
exclude :test_utc_or_local, "needs investigation"