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import unittest
from formencode.api import is_validator, FancyValidator, Invalid
from formencode.compound import CompoundValidator, All
from formencode.validators import Int
class CustomValidator(FancyValidator):
"""A custom validator based directly on FancyValidator."""
messages = {
'custom': "%(number)s is invalid",
}
def _convert_to_python(self, value, state):
if value == '1':
raise Invalid(self.message(
'custom', state, number='one'), value, state)
return int(value)
def _convert_from_python(self, value, state):
if value == 2:
raise Invalid(self.message(
'custom', state, number='two'), value, state)
return str(value)
def _validate_other(self, value, state):
if value == '3':
raise Invalid(self.message(
'custom', state, number='three'), value, state)
def _validate_python(self, value, state):
if value == 4:
raise Invalid(self.message(
'custom', state, number='four'), value, state)
class TestCustomValidator(unittest.TestCase):
def test_is_validator(self):
self.assertTrue(is_validator(CustomValidator))
self.assertTrue(is_validator(CustomValidator()))
def test_to_python(self):
cv = CustomValidator()
self.assertEqual(cv.to_python('0'), 0)
try:
cv.to_python('1')
except Invalid as e:
self.assertIn('one is invalid', str(e), e)
else:
self.fail("one should be invalid")
self.assertEqual(cv.to_python('2'), 2)
try:
cv.to_python('3')
except Invalid as e:
self.assertIn('three is invalid', str(e), e)
else:
self.fail("three should be invalid")
try:
cv.to_python('4')
except Invalid as e:
self.assertIn('four is invalid', str(e), e)
else:
self.fail("four should be invalid")
self.assertEqual(cv.to_python('5'), 5)
def test_from_python(self):
cv = CustomValidator()
self.assertEqual(cv.from_python(0), '0')
self.assertEqual(cv.from_python(1), '1')
try:
cv.from_python(2)
except Invalid as e:
self.assertIn('two is invalid', str(e), e)
else:
self.fail("two should be invalid")
self.assertEqual(cv.from_python(3), '3')
self.assertEqual(cv.from_python(4), '4')
self.assertEqual(cv.from_python(5), '5')
def test_from_python_no_accept(self):
cv = CustomValidator(accept_python=False)
self.assertEqual(cv.from_python(0), '0')
self.assertEqual(cv.from_python(1), '1')
try:
cv.from_python(2)
except Invalid as e:
self.assertIn('two is invalid', str(e), e)
else:
self.fail("two should be invalid")
try:
cv.from_python(3)
except Invalid as e:
self.assertIn('three is invalid', str(e), e)
else:
self.fail("three should be invalid")
try:
cv.from_python(4)
except Invalid as e:
self.assertIn('four is invalid', str(e), e)
else:
self.fail("four should be invalid")
self.assertEqual(cv.from_python(5), '5')
class NotOneValidator(Int):
"""A custom validator based on an existing validator."""
messages = {
'custom': "must not be %(number)d",
}
number = 1
def _convert_to_python(self, value, state):
value = super(NotOneValidator, self)._convert_to_python(value, state)
if value == self.number:
raise Invalid(self.message(
'custom', state, number=self.number), value, state)
return value
class TestNotOneValidator(unittest.TestCase):
def test_is_validator(self):
self.assertTrue(is_validator(NotOneValidator))
self.assertTrue(is_validator(NotOneValidator()))
self.assertTrue(is_validator(NotOneValidator(one=2)))
def test_to_python(self):
nov = NotOneValidator()
self.assertEqual(nov.to_python('0'), 0)
try:
nov.to_python('1')
except Invalid as e:
self.assertIn('must not be 1', str(e), e)
else:
self.fail("1 should be invalid")
self.assertEqual(nov.to_python('2'), 2)
self.assertEqual(nov.to_python('42'), 42)
def test_to_python_number(self):
nov = NotOneValidator(number=42)
self.assertEqual(nov.to_python('0'), 0)
self.assertEqual(nov.to_python('1'), 1)
self.assertEqual(nov.to_python('2'), 2)
try:
nov.to_python('42')
except Invalid as e:
self.assertIn('must not be 42', str(e), e)
else:
self.fail("42 should be invalid")
def test_to_python_range(self):
nov = NotOneValidator(min=40, max=49, number=42)
self.assertRaises(Invalid, nov.to_python, '0')
self.assertRaises(Invalid, nov.to_python, '1')
self.assertRaises(Invalid, nov.to_python, '2')
self.assertRaises(Invalid, nov.to_python, '39')
self.assertEqual(nov.to_python('40'), 40)
self.assertEqual(nov.to_python('41'), 41)
try:
nov.to_python('42')
except Invalid as e:
self.assertIn('must not be 42', str(e), e)
else:
self.fail("42 should be invalid")
self.assertEqual(nov.to_python('43'), 43)
self.assertEqual(nov.to_python('49'), 49)
self.assertRaises(Invalid, nov.to_python, '50')
class CustomCompoundValidator(CompoundValidator):
"""A custom validator based directly on CompoundValidator."""
def _attempt_convert(self, value, state, validate):
return validate(self.validators[1], value, state)
class TestCustomCompoundValidator(unittest.TestCase):
def setUp(self):
self.validator = CustomCompoundValidator(
validators=[Int(min=3), Int(max=5)])
def test_is_validator(self):
self.assertTrue(is_validator(CustomCompoundValidator))
self.assertTrue(is_validator(self.validator))
def test_to_python(self):
ccv = self.validator
self.assertEqual(ccv.to_python('2'), 2)
self.assertEqual(ccv.to_python('4'), 4)
self.assertRaises(Invalid, ccv.to_python, '6')
class AllAndNotOneValidator(All):
"""A custom validator based on an existing CompoundValidator."""
messages = {
'custom': "must not be %(number)d",
}
number = 1
def _attempt_convert(self, value, state, validate):
value = super(AllAndNotOneValidator, self)._attempt_convert(
value, state, validate)
if value == self.number:
raise Invalid(self.message(
'custom', state, number=self.number), value, state)
return value
class TestAllAndNotOneValidator(unittest.TestCase):
def setUp(self):
self.validator = AllAndNotOneValidator(
validators=[Int(min=3), Int(max=5)], number=4)
def test_is_validator(self):
self.assertTrue(is_validator(AllAndNotOneValidator))
self.assertTrue(is_validator(self.validator))
def test_to_python(self):
cav = self.validator
self.assertRaises(Invalid, cav.to_python, '1')
self.assertRaises(Invalid, cav.to_python, '2')
self.assertEqual(cav.to_python('3'), 3)
try:
cav.to_python('4')
except Invalid as e:
self.assertIn('must not be 4', str(e), e)
else:
self.fail("4 should be invalid")
self.assertEqual(cav.to_python('5'), 5)
self.assertRaises(Invalid, cav.to_python, '6')
self.assertRaises(Invalid, cav.to_python, '7')
class DeclarativeAllValidator(All):
"""A CompoundValidator with subvalidators given as attributes."""
first_validator = Int(min=3)
second_validator = Int(max=5)
class TestDeclarativeAllValidator(unittest.TestCase):
def test_is_validator(self):
self.assertTrue(is_validator(DeclarativeAllValidator))
self.assertTrue(is_validator(DeclarativeAllValidator()))
def test_attrs_deleted(self):
self.assertFalse(hasattr(DeclarativeAllValidator, 'first_validator'))
self.assertFalse(hasattr(DeclarativeAllValidator, 'second_validator'))
def test_to_python(self):
dav = DeclarativeAllValidator()
self.assertRaises(Invalid, dav.to_python, '1')
self.assertRaises(Invalid, dav.to_python, '2')
self.assertEqual(dav.to_python('3'), 3)
self.assertEqual(dav.to_python('4'), 4)
self.assertEqual(dav.to_python('5'), 5)
self.assertRaises(Invalid, dav.to_python, '6')
self.assertRaises(Invalid, dav.to_python, '7')
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