6
मेरे पास एक मॉडल है और मैं डेटाबेस परत का आविष्कार किए बिना सत्यापन का परीक्षण करने की कोशिश कर रहा हूं। शब्दों के साथ वर्णन करने के बजाय मैं बस कुछ उदाहरण कोड पोस्ट करूंगा। यहां मुद्दा यह है कि बार के लिए विदेशीकी संबंध है, जो कि मैं परीक्षण करने की कोशिश कर रहा हूं उससे प्रासंगिक नहीं है लेकिन मुझे वह परीक्षण चलाने से रोक रहा है जो मैं चाहता हूं।एक Django ForeignKey मान नकल करने के लिए नकली पुस्तकालय का उपयोग कैसे करें?
पहले, myapp/models.py:
from django.core.exceptions import ValidationError
from django.db import models
class BadFooError(ValidationError):
pass
class Bar(models.Model):
description = models.CharField(max_length=20)
class Foo(models.Model):
bar = models.ForeignKey(Bar)
a_value = models.IntegerField()
b_value = models.BooleanField()
def clean(self):
super(Foo, self).clean()
if self.b_value and self.a_value > 50:
raise BadFooError("No good")
इसके बाद, myapp/tests.py:
from unittest import TestCase
from mock import MagicMock
from . import models
class SimpleTest(TestCase):
def test_avalue_bvalue_validation(self):
foo = models.Foo()
foo.a_value = 30
foo.b_value = True
foo.bar = MagicMock(spec=models.Bar)
self.assertRaises(models.BadFooError, foo.full_clean)
def test_method_2(self):
foo = models.Foo()
foo.a_value = 30
foo.b_value = True
foo.bar = MagicMock()
foo.__class__ = models.Bar
self.assertRaises(models.BadFooError, foo.full_clean)
def test_method_3(self):
foo = models.Foo()
foo.a_value = 30
foo.b_value = True
# ignore it and it will go away ...??
self.assertRaises(models.BadFooError, foo.full_clean)
अन्त में, python manage.py test myapp
EEE
======================================================================
ERROR: test_avalue_bvalue_validation (myapp.tests.SimpleTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "~/sandbox/myapp/tests.py", line 14, in test_avalue_bvalue_validation
foo.bar = MagicMock(spec=models.Bar)
File "~/dsbx/local/lib/python2.7/site-packages/django/db/models/fields/related.py", line 408, in __set__
instance._state.db = router.db_for_write(instance.__class__, instance=value)
File "~/dsbx/local/lib/python2.7/site-packages/django/db/utils.py", line 142, in _route_db
return hints['instance']._state.db or DEFAULT_DB_ALIAS
File "~/dsbx/local/lib/python2.7/site-packages/mock.py", line 658, in __getattr__
raise AttributeError("Mock object has no attribute %r" % name)
AttributeError: Mock object has no attribute '_state'
======================================================================
ERROR: test_method_2 (myapp.tests.SimpleTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "~/sandbox/myapp/tests.py", line 21, in test_method_2
foo.bar = MagicMock()
File "~/dsbx/local/lib/python2.7/site-packages/django/db/models/fields/related.py", line 405, in __set__
self.field.name, self.field.rel.to._meta.object_name))
ValueError: Cannot assign "<MagicMock id='31914832'>": "Foo.bar" must be a "Bar" instance.
======================================================================
ERROR: test_method_3 (myapp.tests.SimpleTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "~/sandbox/myapp/tests.py", line 29, in test_method_3
self.assertRaises(models.BadFooError, foo.full_clean)
File "/usr/lib/python2.7/unittest/case.py", line 471, in assertRaises
callableObj(*args, **kwargs)
File "~/dsbx/local/lib/python2.7/site-packages/django/db/models/base.py", line 926, in full_clean
raise ValidationError(errors)
ValidationError: {'bar': [u'This field cannot be null.']}
----------------------------------------------------------------------
Ran 3 tests in 0.003s
FAILED (errors=3)
Creating test database for alias 'default'...
Destroying test database for alias 'default'...
तो मेरे सवाल ... वाट कर रहा है के उत्पादन में?