def test_parse_failure(self):
"""Make sure ``parse()`` fails when it doesn't recognize all the way to
the end."""
expr = OneOrMore(Literal('a', name='lit'), name='more')
text = 'aab'
eq_(expr.parse(text), None)
def test_one_or_more(self):
len_eq(OneOrMore(Literal('b')).match('b'), 1) # one
len_eq(OneOrMore(Literal('b')).match('bbb'), 3) # more
len_eq(OneOrMore(Literal('b'), min=3).match('bbb'), 3) # with custom min; success
len_eq(OneOrMore(Literal('b'), min=3).match('bb'), None) # with custom min; failure
len_eq(OneOrMore(Regex('^')).match('bb'), 0) # attempt infinite loop
def test_one_or_more_one(self):
"""Test the 1 case of ``OneOrMore``; it should return a node with a child."""
expr = OneOrMore(Literal('a', name='lit'), name='one')
text = 'a'
eq_(expr.match(text), Node('one', text, 0, 1, children=[
Node('lit', text, 0, 1)]))
