Example of code:
...
def test_field(self):
incorrect_data = u""
correct_data = u"this is correct data"
field_instantiate_kwargs = {
'min_length':10,
'error_messages':{
'min_length': u"some message",
'required': u"required message"
}
}
self.assertFieldOutput(
UpperCaseCharField,
{correct_data: correct_data.upper()},
{incorrect_data: [u"some message",]},
field_kwargs=field_instantiate_kwargs
)
After that I take this errors:
File "app/tests.py", line 47, in test_UpperCaseCharField
field_kwargs=field_instantiate_kwargs File "app/test cases.py",
line 618, in assertFieldOutput optional.clean(input)
AssertionError: ValidationError not raised
I find in django source code this assertFieldOutput and place when raises
error
(https://github.com/django/django/blob/master/django/test/testcases.py):
with self.assertRaises(ValidationError) as context_manager:
optional.clean(input)
optional - it's my field with required=False. django automatic test my
field with required=False and wait that my code must raise ValidationError,
when in base class Field returns "clean" data if input value are in
empty_values before calling any validators (in my case must be called
MinLengthValdator).
class Field(object):
...
def run_validators(self, value):
if value in self.empty_values:
return
errors = []
for v in self.validators:
try:
v(value)
except ValidationError as e:
if hasattr(e, 'code') and e.code in self.error_messages:
e.message = self.error_messages[e.code]
errors.extend(e.error_list)
if errors:
raise ValidationError(errors)
def clean(self, value):
value = self.to_python(value)
self.validate(value)
self.run_validators(value)
return value
What I done wrong and how i should use this assert function for testing my
field? One of solution is override in custom field self.empty_values i
think, but yet not sure.
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