我正在尝试通过发布一些数据和模拟模型的save()方法来测试我的CreateView。
class BaseViewTest(TestCase):
def setUp(self):
self.user = UserFactory()
self.factory = RequestFactory()
class MuayeneCreateViewTest(BaseViewTest):
def test_get(self):
request = self.factory.get(reverse('muayene:create'))
request.user = self.user
response = MuayeneCreateView.as_view()(request)
self.assertEqual(response.status_code, 200)
self.assertTrue('form' in response.context_data)
self.assertTrue('muayene/muayene_form.html' in response.template_name)
@patch('muayene.models.Muayene.save', MagicMock(name="save"))
def test_post(self):
hasta = HastaFactory()
ilac1 = IlacFactory()
ilac2 = IlacFactory()
data = {
'hasta': hasta.id,
'tarih': str(datetime.date.today()),
'yakinma': 'Kusma',
'kullandigi_ilaclar': [ilac1.id, ilac2.id],
'öntani_tani': 'Öntanı ve tanı',
'öneri_görüsler': 'Öneri ve Görüşler',
'özel_notlar': 'Özel notlar'
}
request = self.factory.post(reverse('muayene:create'), data)
request.user = self.user
response = MuayeneCreateView.as_view()(request)
self.assertEqual(response.status_code, 302)
self.assertTrue(Muayene.save.called)
self.assertEqual(Muayene.save.call_count, 1)
以下是MuayeneCreateView：
class MuayeneCreateView(LoginRequiredMixin, CreateView):
login_url = '/login/'
model = Muayene
form_class = MuayeneCreateForm
和追溯：
ERROR: test_post (tests.test_muayene.MuayeneCreateViewTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib64/python3.5/unittest/mock.py", line 1157, in patched
return func(*args, **keywargs)
File "/home/egegunes/Dropbox/Programs/hastatakip/tests/test_muayene.py", line 153, in test_post
response = MuayeneCreateView.as_view()(request)
File "/usr/lib/python3.5/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/usr/lib/python3.5/site-packages/django/contrib/auth/mixins.py", line 56, in dispatch
return super(LoginRequiredMixin, self).dispatch(request, *args, **kwargs)
File "/usr/lib/python3.5/site-packages/django/views/generic/base.py", line 88, in dispatch
return handler(request, *args, **kwargs)
File "/usr/lib/python3.5/site-packages/django/views/generic/edit.py", line 256, in post
return super(BaseCreateView, self).post(request, *args, **kwargs)
File "/usr/lib/python3.5/site-packages/django/views/generic/edit.py", line 222, in post
return self.form_valid(form)
File "/usr/lib/python3.5/site-packages/django/views/generic/edit.py", line 201, in form_valid
self.object = form.save()
File "/usr/lib/python3.5/site-packages/django/forms/models.py", line 452, in save
self._save_m2m()
File "/usr/lib/python3.5/site-packages/django/forms/models.py", line 434, in _save_m2m
f.save_form_data(self.instance, cleaned_data[f.name])
File "/usr/lib/python3.5/site-packages/django/db/models/fields/related.py", line 1618, in save_form_data
setattr(instance, self.attname, data)
File "/usr/lib/python3.5/site-packages/django/db/models/fields/related_descriptors.py", line 480, in __set__
manager = self.__get__(instance)
File "/usr/lib/python3.5/site-packages/django/db/models/fields/related_descriptors.py", line 468, in __get__
return self.related_manager_cls(instance)
File "/usr/lib/python3.5/site-packages/django/db/models/fields/related_descriptors.py", line 751, in __init__
(instance, self.source_field_name))
ValueError: "<Muayene: ID: None - 2016-07-31 - Bob Baz>" needs to have a value for field "muayene" before this many-to-many relationship can be used.
我无法弄清楚导致此错误的原因。其他模型使用Muayene实例，但除非我尝试使用此实例创建其中一个模型，否则IMO不会显示此错误。
Muayene型号：
class Muayene(models.Model):
hasta = models.ForeignKey(
'hasta.Hasta',
on_delete=models.CASCADE
)
tarih = models.DateField(
default = timezone.now
)
yakinma = models.TextField(
max_length = 255,
blank = True,
null = True
)
kullandigi_ilaclar = models.ManyToManyField(
Ilac,
blank = True
)
baki = models.TextField(
max_length = 255,
blank = True,
null = True
)
öntani_tani = models.TextField(
max_length = 255,
blank = True,
null = True
)
öneri_görüsler = models.TextField(
max_length = 255,
blank = True,
null = True
)
özel_notlar = models.TextField(
max_length = 255,
blank = True,
null = True
)
def __str__(self):
tarih = str(self.tarih)
hasta = str(self.hasta.ad + " " + self.hasta.soyad)
pk = str(self.pk)
return "ID: " + pk + " - " + tarih + " - " + hasta
def get_absolute_url(self):
return reverse('muayene:detail', kwargs={'pk':self.pk})
def was_today(self):
today = datetime.date.today()
if today - datetime.timedelta(days=1) <= self.tarih <= today:
return True
else:
return False
与Muayene相关的模型：
class Recete(models.Model):
hasta = models.ForeignKey(
'hasta.Hasta',
on_delete=models.CASCADE
)
muayene = models.ForeignKey(
'muayene.Muayene',
on_delete=models.CASCADE,
)
tarih = models.DateField(
default = timezone.now
)
ilaclar = models.ManyToManyField(Ilac)
def __str__(self):
return str(self.tarih)
def get_absolute_url(self):
return reverse('muayene:recete-detail', kwargs={'pk':self.pk})
class Rapor(models.Model):
hasta = models.ForeignKey(
'hasta.Hasta',
on_delete=models.CASCADE
)
muayene = models.ForeignKey(
'muayene.Muayene',
on_delete=models.CASCADE
)
tarih = models.DateField(
default = timezone.now
)
tani = models.CharField(
blank = True,
null = True,
max_length = 255
)
gun = models.PositiveSmallIntegerField(
default = 1
)
def __str__(self):
return str(self.hasta)
def get_absolute_url(self):
return reverse('muayene:rapor-detail', kwargs={'pk':self.pk})
class LaboratuvarIstek(models.Model):
hasta = models.ForeignKey(
'hasta.Hasta',
on_delete=models.CASCADE
)
muayene = models.ForeignKey(
'muayene.Muayene',
on_delete=models.CASCADE,
)
tarih = models.DateField(
default = timezone.now
)
istekler = models.ManyToManyField(Laboratuvar)
def __str__(self):
return str(self.hasta)
def get_absolute_url(self):
return reverse('muayene:lab-detail', kwargs={'pk':self.pk})
答案 0 :(得分：0)
您实际上可以在追溯中看到失败的原因：
File "/usr/lib/python3.5/site-packages/django/forms/models.py", line 452, in save
self._save_m2m()
这是因为您的视图并未直接调用模型的保存方法。相反，它获取用于模型的表单（或创建一个带有工厂的表单）并调用表单的保存方法。您可以在django.forms.models.BaseModelForm.save处查看此方法。因此，如果您真的想要计算模型实例上的调用并且不想测试失败，那么您也应该模拟django.forms.models.BaseModelForm._save_m2m，因为它会以表单的保存方法调用。