我有一个模型字段descrition，字段的约束是
description = models.TextField(
verbose_name=_('Description'),
help_text=_('Description of the requirement'),
blank=True, default=''
)
因此它不能从form级别为空。但我想为此编写一个单元测试，我写了一个并且它引发了错误AssertionError: ValidationError not raised
我的测试代码（请避开其他字段和方法，我没有详细提及这些字段和方法，因为它们目前不相关）
class RequirementHeaderTestCase(TestCase):
def setUp(self):
self.user = Customer.objects.create_user(email="user@user.com")
self.user_id = self.user.id
self.anonymous_user_email_id = None
self.session = None
self.description = 'Test Description'
self.requirement_status = 'Complete'
self.service = RequirementService()
def test_requirement_header_without_description(self):
with self.assertRaises(ValidationError) as ex:
self.service.create_requirement_header(
user_id=self.user_id,
anonymous_user_email_id=self.anonymous_user_email_id,
session=self.session,
requirement_status=self.requirement_status,
)
self.assertEqual(ex.exception.__class__, ValidationError)
运行此测试后，显示以下错误，
FAIL: test_requirement_header_without_description (requirements.tests.RequirementHeaderTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/equirements/tests.py", line 25, in test_requirement_header_without_description
requirement_status=self.requirement_status,
AssertionError: ValidationError not raised
我的问题是，如何从表单级别为blank=False字段编写单元测试。
更新
以下是相关方法
def create_requirement_header(self, user_id=None,anonymous_user_email_id=None,session=None,description='',requirement_status=None):
# getting Customer object from id
user = None
if user_id is not None:
try:
user = Customer.objects.get(pk=user_id)
except Customer.DoesNotExist:
raise ObjectDoesNotExist('User was not found')
# getting AnonymousUserEmail object from id
anonymous_user_email = None
if anonymous_user_email_id is not None:
try:
anonymous_user_email = AnonymousUserEmail.objects.get(pk=anonymous_user_email_id)
except AnonymousUserEmail.DoesNotExist:
raise ObjectDoesNotExist('AnonymousUserEmail object was not found') # Need to re-think about message
requirement_header = RequirementHeader.objects.create_requirement_header(user=user,
anonymous_email=anonymous_user_email,
session=session,
description=description,
requirement_status=requirement_status)
return {
"id": requirement_header.id,
"description": requirement_header.description,
"status": requirement_header.requirement_status
}