def test_format_checkers_come_with_defaults(self):
# This is bad :/ but relied upon.
# The docs for quite awhile recommended people do things like
# validate(..., format_checker=FormatChecker())
# We should change that, but we can't without deprecation...
checker = FormatChecker()
with self.assertRaises(FormatError):
checker.check(instance="not-an-ipv4", format="ipv4")
def test_format_checkers_come_with_defaults(self):
# This is bad :/ but relied upon.
# The docs for quite awhile recommended people do things like
# validate(..., format_checker=FormatChecker())
# We should change that, but we can't without deprecation...
checker = FormatChecker()
with self.assertRaises(FormatError):
checker.check(instance="not-an-ipv4", format="ipv4")
class FormatValidator:
def __init__(self, format):
self._format = format
self._checker = FormatChecker()
def __call__(self, text):
try:
self._checker.check(text, self._format)
except FormatError:
raise ValidationError("Value {!r} does not confirm to format {!r}".format(text, self._format))
return True
def test_it_catches_registered_errors(self):
checker = FormatChecker()
checker.checks("boom", raises=type(BOOM))(boom)
with self.assertRaises(FormatError) as cm:
checker.check(instance=12, format="boom")
self.assertIs(cm.exception.cause, BOOM)
self.assertIs(cm.exception.__cause__, BOOM)
# Unregistered errors should not be caught
with self.assertRaises(type(BANG)):
checker.check(instance="bang", format="boom")
def test_it_catches_registered_errors(self):
checker = FormatChecker()
checker.checks("boom", raises=type(BOOM))(boom)
with self.assertRaises(FormatError) as cm:
checker.check(instance=12, format="boom")
self.assertIs(cm.exception.cause, BOOM)
self.assertIs(cm.exception.__cause__, BOOM)
# Unregistered errors should not be caught
with self.assertRaises(type(BANG)):
checker.check(instance="bang", format="boom")
def test_it_catches_registered_errors(self):
checker = FormatChecker()
checker.checks("foo", raises=ValueError)(self.fn)
# Registered errors should be caught and turned into FormatErrors
cause = ValueError()
self.fn.side_effect = cause
with self.assertRaises(FormatError) as cm:
checker.check("bar", "foo")
# Original exception should be attached to cause attribute
self.assertIs(cm.exception.cause, cause)
# Unregistered errors should not be caught
self.fn.side_effect = AttributeError
with self.assertRaises(AttributeError):
checker.check("bar", "foo")
def test_it_catches_registered_errors(self):
checker = FormatChecker()
cause = self.fn.side_effect = ValueError()
checker.checks("foo", raises=ValueError)(self.fn)
with self.assertRaises(FormatError) as cm:
checker.check("bar", "foo")
self.assertIs(cm.exception.cause, cause)
self.assertIs(cm.exception.__cause__, cause)
# Unregistered errors should not be caught
self.fn.side_effect = AttributeError
with self.assertRaises(AttributeError):
checker.check("bar", "foo")
def test_it_catches_registered_errors(self):
checker = FormatChecker()
cause = self.fn.side_effect = ValueError()
checker.checks("foo", raises=ValueError)(self.fn)
with self.assertRaises(FormatError) as cm:
checker.check("bar", "foo")
self.assertIs(cm.exception.cause, cause)
self.assertIs(cm.exception.__cause__, cause)
# Unregistered errors should not be caught
self.fn.side_effect = AttributeError
with self.assertRaises(AttributeError):
checker.check("bar", "foo")