def test_self_deep_cycle_lazy(self):
with self.assertRaises(ValueError):
env = ModExpEnv(lazy=True)
ModExp(r'\d', 'a', env)
ModExp(r'~<a>', 'b', env)
ModExp(r'~<b>', 'c', env)
ModExp(r'~<c>', 'd', env)
a = ModExp(r'~<d>', 'a', env)
a.regex()
class ModExpTest3(unittest.TestCase):
def setUp(self):
env = ModExpEnv()
self.natural = ModExp(r'\d+', 'natural', env)
self.operator = ModExp(r'\+|-|\/|\*', 'operator', env)
self.expr = ModExp(r'~<natural>\s?~<operator>\s?~<natural>', 'expr',
env)
self.complex_expr = ModExp(r'\(~<expr>\)\s?~<operator>\s?\(~<expr>\)',
'complex_expr', env)
def test_dependencies(self):
self.assertSetEqual(self.natural.dependencies(), set())
self.assertSetEqual(self.operator.dependencies(), set())
self.assertSetEqual(self.expr.dependencies(), {'natural', 'operator'})
self.assertSetEqual(self.complex_expr.dependencies(),
{'expr', 'operator', 'natural'})
def test_exprs(self):
self.assertIsNotNone(re.fullmatch(self.expr.regex(), '34 + 43'))
self.assertIsNotNone(re.fullmatch(self.expr.regex(), '34+43'))
self.assertIsNotNone(re.fullmatch(self.expr.regex(), '34*23'))
self.assertIsNone(re.fullmatch(self.expr.regex(), '34.2 * 234'))
def test_complex_exprs(self):
self.assertIsNotNone(
re.fullmatch(self.complex_expr.regex(), '(23+43) / (23+2)'))
self.assertIsNotNone(
re.fullmatch(self.complex_expr.regex(), '(23+43)/(23+2)'))
self.assertIsNone(
re.fullmatch(self.complex_expr.regex(), '23 / (23+2)'))
self.assertIsNone(
re.fullmatch(self.complex_expr.regex(), '(23) / (23+2)'))
self.assertIsNone(
re.fullmatch(self.complex_expr.regex(), '(23+2)/(23)'))
def test_lazy_eval(self):
try:
env = ModExpEnv(lazy=True)
complex_expr = ModExp(r'\(~<expr>\)\s?~<operator>\s?\(~<expr>\)',
'complex_expr', env)
expr = ModExp(r'~<natural>\s?~<operator>\s?~<natural>', 'expr',
env)
natural = ModExp(r'\d+', 'natural', env)
operator = ModExp(r'\+|-|\/|\*', 'operator', env)
self.assertIsNone(env._expressions['complex_expr']._compiled_regex)
self.assertIsNone(env._expressions['expr']._compiled_regex)
self.assertIsNone(env._expressions['natural']._compiled_regex)
self.assertIsNone(env._expressions['operator']._compiled_regex)
complex_expr.regex()
except KeyError:
self.fail('Lazy evaluation raised KeyError unexpectedly.')
class ModExpTest1(unittest.TestCase):
def setUp(self):
env = ModExpEnv()
self.natural = ModExp(r'\d+', 'natural', env)
self.positive_rational = ModExp(r'~<natural>\.~<natural>',
'positive_rational', env)
def test_dependencies(self):
self.assertSetEqual(self.natural.dependencies(), set())
self.assertSetEqual(self.positive_rational.dependencies(), {'natural'})
def test_positive_rationals(self):
self.assertIsNotNone(
re.fullmatch(self.positive_rational.regex(), '34.23'))
self.assertIsNone(
re.fullmatch(self.positive_rational.regex(), '34d.23'))
self.assertIsNone(re.fullmatch(self.positive_rational.regex(), '.23'))
class ModExpTestGlobalEnv(unittest.TestCase):
def setUp(self):
self.natural = ModExp(r'\d+', 'natural')
self.integer = ModExp(r'-?\d+', 'integer')
self.rational = ModExp(r'~<integer>\.~<natural>', 'rational')
def test_dependencies(self):
self.assertSetEqual(self.natural.dependencies(), set())
self.assertSetEqual(self.integer.dependencies(), set())
self.assertSetEqual(self.rational.dependencies(),
{'natural', 'integer'})
def test_rationals(self):
self.assertIsNotNone(re.fullmatch(self.rational.regex(), '34.23'))
self.assertIsNotNone(re.fullmatch(self.rational.regex(), '-34.23'))
self.assertIsNone(re.fullmatch(self.rational.regex(), '34d.23'))
self.assertIsNone(re.fullmatch(self.rational.regex(), '.23'))
self.assertIsNone(re.fullmatch(self.rational.regex(), '-.23'))
self.assertIsNone(re.fullmatch(self.rational.regex(), '34.-23'))
class ModExpTestChanges(unittest.TestCase):
def setUp(self):
env = ModExpEnv()
self.number = ModExp(r'-?\d+(\.\d+)?', 'number', env)
self.operator = ModExp(r'\+|-|\/|\*', 'operator', env)
self.expr = ModExp(r'~<number>\s?~<operator>\s?~<number>', 'expr', env)
self.number = ModExp(r'\d+', 'number', env)
def test_dependencies(self):
self.assertSetEqual(self.number.dependencies(), set())
self.assertSetEqual(self.operator.dependencies(), set())
self.assertSetEqual(self.expr.dependencies(), {'number', 'operator'})
def test_exprs(self):
self.assertIsNotNone(re.fullmatch(self.expr.regex(), '34 + 43'))
self.assertIsNotNone(re.fullmatch(self.expr.regex(), '34+43'))
self.assertIsNotNone(re.fullmatch(self.expr.regex(), '34*23'))
self.assertIsNone(re.fullmatch(self.expr.regex(), '34.2 * 234'))
self.assertIsNone(re.fullmatch(self.expr.regex(), '342 * 23.4'))
self.assertIsNone(re.fullmatch(self.expr.regex(), '34.2 / 23.4'))
self.assertIsNone(re.fullmatch(self.expr.regex(), '-34.2 / 23.4'))
self.assertIsNone(re.fullmatch(self.expr.regex(), '-34.2 / -23.4'))
def test_self_cycle_lazy(self):
with self.assertRaises(ValueError):
env = ModExpEnv(lazy=True)
expr = ModExp(r'~<expr>', 'expr', env)
expr.regex()
def test_2_cycle_lazy(self):
with self.assertRaises(ValueError):
env = ModExpEnv(lazy=True)
ModExp(r'~<expr2>', 'expr1', env)
expr2 = ModExp(r'~<expr1>', 'expr2', env)
expr2.regex()
class ModExpTestMultiEnv(unittest.TestCase):
def setUp(self):
env1 = ModExpEnv()
self.segment1 = ModExp(r'\d{3}', 'segment', env1)
self.long_segment1 = ModExp(r'\d{4}', 'long_segment', env1)
self.delimiter1 = ModExp(r'\-|\.|\s', 'delimiter', env1)
self.entity1 = ModExp(
r'~<segment>~<delimiter>~<segment>~<delimiter>~<long_segment>',
'entity', env1)
env2 = ModExpEnv()
self.segment2 = ModExp(r'[A-Za-z0-9\.]+', 'segment', env2)
self.long_segment2 = ModExp(
r'[A-Za-z0-9\.]*[A-Za-z0-9]\.(com|edu|org|net)', 'long_segment',
env2)
self.delimiter2 = ModExp(r'@', 'delimiter', env2)
self.entity2 = ModExp(r'~<segment>~<delimiter>~<long_segment>',
'entity', env2)
def test_env1(self):
self.assertIsNotNone(re.fullmatch(self.entity1.regex(),
'123-456-7890'))
self.assertIsNotNone(re.fullmatch(self.entity1.regex(),
'123.456.7890'))
self.assertIsNone(re.fullmatch(self.entity1.regex(), 'abc.def.ghij'))
self.assertIsNone(
re.fullmatch(self.entity1.regex(), '*****@*****.**'))
self.assertIsNone(
re.fullmatch(self.entity1.regex(), '*****@*****.**'))
self.assertIsNone(
re.fullmatch(self.entity1.regex(), '*****@*****.**'))
def test_env2(self):
self.assertIsNotNone(
re.fullmatch(self.entity2.regex(), '*****@*****.**'))
self.assertIsNotNone(
re.fullmatch(self.entity2.regex(), '*****@*****.**'))
self.assertIsNotNone(
re.fullmatch(self.entity2.regex(), '*****@*****.**'))
self.assertIsNone(re.fullmatch(self.entity2.regex(), '123-456-7890'))
self.assertIsNone(re.fullmatch(self.entity2.regex(), '123.456.7890'))
self.assertIsNone(re.fullmatch(self.entity2.regex(), 'abc.def.ghij'))