def test_literal(self):
'''
Simple literal should compile directly.
'''
token = Token(Literal('abc'))
token.compile()
assert token.regexp == 'abc', repr(token.regexp)
def test_real(self):
'''
A real is more complex, but still compiles.
'''
token = Token(Real(exponent='Ee'))
token.compile()
assert token.regexp == \
'(?:[\\+\\-])?(?:(?:[0-9](?:[0-9])*)?\\.[0-9](?:[0-9])*|[0-9](?:[0-9])*(?:\\.)?)(?:[Ee](?:[\\+\\-])?[0-9](?:[0-9])*)?', \
repr(token.regexp)
def test_impossible(self):
'''
Cannot compile arbitrary functions.
'''
try:
token = Token(Real() > (lambda x: x))
token.compile()
assert False, 'Expected error'
except LexerError:
pass
