def test_predSuccess(self):
"""
L{OMetaBase.pred} returns True and empty error info on success.
"""
o = OMetaBase("")
v, e = o.pred(lambda: (True, _MaybeParseError(0, None)))
self.assertEqual((v, e), (True, _MaybeParseError(0, None)))
def test_predSuccess(self):
"""
L{OMetaBase.pred} returns True and empty error info on success.
"""
o = OMetaBase("")
v, e = o.pred(lambda: (True, _MaybeParseError(0, None)))
self.assertEqual((v, e), (True, _MaybeParseError(0, None)))
def test_predFailure(self):
"""
L{OMetaBase.pred} returns True and empty error info on success.
"""
o = OMetaBase("")
try:
o.pred(lambda: (False, _MaybeParseError(0, None)))
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(0, None))
else:
self.fail('_MaybeParseError not raised')
def test_predFailure(self):
"""
L{OMetaBase.pred} returns True and empty error info on success.
"""
o = OMetaBase("")
try:
o.pred(lambda: (False, _MaybeParseError(0, None)))
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(0, None))
else:
self.fail('_MaybeParseError not raised')
def test_end(self):
"""
L{OMetaBase.rule_end} matches the end of input and raises L{_MaybeParseError}
if input is left.
"""
o = OMetaBase("abc")
try:
o.rule_end()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(1, None))
else:
self.fail('_MaybeParseError not raised')
o.many(o.rule_anything)
self.assertEqual(o.rule_end(), (True, _MaybeParseError(3, None)))
def test_end(self):
"""
L{OMetaBase.rule_end} matches the end of input and raises L{_MaybeParseError}
if input is left.
"""
o = OMetaBase("abc")
try:
o.rule_end()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(1, None))
else:
self.fail('_MaybeParseError not raised')
o.many(o.rule_anything)
self.assertEqual(o.rule_end(), (True, _MaybeParseError(3, None)))
def test_many(self):
"""
L{OMetaBase.many} returns a list of parsed values and the error that
caused the end of the loop.
"""
data = "ooops"
o = OMetaBase(data)
self.assertEqual(o.many(lambda: o.rule_exactly('o')),
(['o'] * 3, _MaybeParseError(3, expected(None, 'o'))))
def test_many(self):
"""
L{OMetaBase.many} returns a list of parsed values and the error that
caused the end of the loop.
"""
data = "ooops"
o = OMetaBase(data)
self.assertEqual(o.many(lambda: o.rule_exactly('o')),
(['o'] * 3, _MaybeParseError(3, expected(None, 'o'))))
def test_digit(self):
"""
L{OMetaBase.rule_digit} matches digits.
"""
o = OMetaBase("1a")
v, e = o.rule_digit()
self.assertEqual((v, e), ("1", [0, None]))
try:
o.rule_digit()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(1, expected("digit")))
else:
self.fail('_MaybeParseError not raised')
def test_digit(self):
"""
L{OMetaBase.rule_digit} matches digits.
"""
o = OMetaBase("1a")
v, e = o.rule_digit()
self.assertEqual((v, e), ("1", [0, None]))
try:
o.rule_digit()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(1, expected("digit")))
else:
self.fail('_MaybeParseError not raised')
def test_letter(self):
"""
L{OMetaBase.rule_letter} matches letters.
"""
o = OMetaBase("a1")
v, e = o.rule_letter()
self.assertEqual((v, e), ("a", [0, None]))
try:
o.rule_letter()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(1, expected("letter")))
else:
self.fail('_MaybeParseError not raised')
def test_letter(self):
"""
L{OMetaBase.rule_letter} matches letters.
"""
o = OMetaBase("a1")
v, e = o.rule_letter()
self.assertEqual((v, e), ("a", [0, None]))
try:
o.rule_letter()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(1, expected("letter")))
else:
self.fail('_MaybeParseError not raised')
def test_letterOrDigit(self):
"""
L{OMetaBase.rule_letterOrDigit} matches alphanumerics.
"""
o = OMetaBase("a1@")
v, e = o.rule_letterOrDigit()
self.assertEqual((v, e), ("a", [0, None]))
v, e = o.rule_letterOrDigit()
self.assertEqual((v, e), ("1", [1, None]))
try:
o.rule_letterOrDigit()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(2, expected("letter or digit")))
else:
self.fail('_MaybeParseError not raised')
def test_letterOrDigit(self):
"""
L{OMetaBase.rule_letterOrDigit} matches alphanumerics.
"""
o = OMetaBase("a1@")
v, e = o.rule_letterOrDigit()
self.assertEqual((v, e), ("a", [0, None]))
v, e = o.rule_letterOrDigit()
self.assertEqual((v, e), ("1", [1, None]))
try:
o.rule_letterOrDigit()
except _MaybeParseError as e:
self.assertEqual(e, _MaybeParseError(2,
expected("letter or digit")))
else:
self.fail('_MaybeParseError not raised')
