Function assert_is

vispy/testing/_testing.py:122–126

Backport

(expr1, expr2, msg=None)

def assert_is(expr1, expr2, msg=None):
    """Backport"""
    if expr1 is not expr2:
        std_msg = '%s is not %s' % (_safe_rep(expr1), _safe_rep(expr2))
        raise AssertionError(_format_msg(msg, std_msg))


class raises(object):