Django formset单元测试

Question

我无法使用formset运行Unit Test.

我尝试做一个测试:

class NewClientTestCase(TestCase):

    def setUp(self):
        self.c = Client()

    def test_0_create_individual_with_same_adress(self):

        post_data =  {
            'ctype': User.CONTACT_INDIVIDUAL,
            'username': 'dupond.f',        
            'email': 'new@gmail.com', 
            'password': 'pwd', 
            'password2': 'pwd', 
            'civility': User.CIVILITY_MISTER, 
            'first_name': 'François', 
            'last_name': 'DUPOND', 
            'phone': '+33 1 34 12 52 30', 
            'gsm': '+33 6 34 12 52 30', 
            'fax': '+33 1 34 12 52 30', 
            'form-0-address1': '33 avenue Gambetta', 
            'form-0-address2': 'apt 50', 
            'form-0-zip_code': '75020', 
            'form-0-city': 'Paris', 
            'form-0-country': 'FRA', 
            'same_for_billing': True,            
        }

        response = self.c.post(reverse('client:full_account'), post_data, follow=True)   

        self.assertRedirects(response, '%s?created=1' % reverse('client:dashboard'))

我有这个错误:

ValidationError:[u'ManagementForm数据丢失或被篡改']

我的看法 :

def full_account(request, url_redirect=''):    
    from forms import NewUserFullForm,  AddressForm,  BaseArticleFormSet

    fields_required = []
    fields_notrequired = []

    AddressFormSet = formset_factory(AddressForm, extra=2,  formset=BaseArticleFormSet)

    if request.method == 'POST':        
        form = NewUserFullForm(request.POST)        
        objforms = AddressFormSet(request.POST)            

        if objforms.is_valid() and form.is_valid():            
            user = form.save()            
            address = objforms.forms[0].save()


            if url_redirect=='':
                url_redirect = '%s?created=1' % reverse('client:dashboard')
                logon(request, form.instance)            
            return HttpResponseRedirect(url_redirect)
    else:
        form = NewUserFullForm()
        objforms = AddressFormSet()   

    return direct_to_template(request, 'clients/full_account.html', {
        'form':form,
        'formset': objforms, 
        'tld_fr':False, 
    })

和我的表格文件:

class BaseArticleFormSet(BaseFormSet):

    def clean(self):        

        msg_err = _('Ce champ est obligatoire.')
        non_errors = True

        if 'same_for_billing' in self.data and self.data['same_for_billing'] == 'on':
            same_for_billing = True
        else:            
            same_for_billing = False

        for i in [0, 1]:

            form = self.forms[i]           

            for field in form.fields:                                
                name_field = 'form-%d-%s' % (i, field )
                value_field = self.data[name_field].strip()                

                if i == 0 and self.forms[0].fields[field].required and value_field =='':                    
                    form.errors[field] = msg_err                    
                    non_errors = False

                elif i == 1 and not same_for_billing and self.forms[1].fields[field].required and value_field =='':
                    form.errors[field] = msg_err                    
                    non_errors = False

        return non_errors

class AddressForm(forms.ModelForm):

    class Meta:
        model = Address

    address1 = forms.CharField()
    address2 = forms.CharField(required=False)
    zip_code = forms.CharField()
    city = forms.CharField()
    country = forms.ChoiceField(choices=CountryField.COUNTRIES,  initial='FRA')

Answer 1

特别是,我发现ManagmentForm验证器正在寻找以下要发布的项目:

form_data = {
            'form-TOTAL_FORMS': 1, 
            'form-INITIAL_FORMS': 0 
}

Answer 2

每个Django formset都带有一个需要包含在帖子中的管理表单.在官方的文档解释得很好.要在单元测试中使用它,您需要自己编写.(我提供的链接显示了一个示例),或调用formset.management_form输出数据.

Answer 3

实际上，通过检查响应的上下文很容易重现表单集中的内容。

考虑以下代码（self.client作为常规测试客户端）：

url = "some_url"

response = self.client.get(url)
self.assertEqual(response.status_code, 200)

# data will receive all the forms field names
# key will be the field name (as "formx-fieldname"), value will be the string representation.
data = {}

# global information, some additional fields may go there
data['csrf_token'] = response.context['csrf_token']

# management form information, needed because of the formset
management_form = response.context['form'].management_form
for i in 'TOTAL_FORMS', 'INITIAL_FORMS', 'MIN_NUM_FORMS', 'MAX_NUM_FORMS':
    data['%s-%s' % (management_form.prefix, i)] = management_form[i].value()

for i in range(response.context['form'].total_form_count()):
    # get form index 'i'
    current_form = response.context['form'].forms[i]

    # retrieve all the fields
    for field_name in current_form.fields:
        value = current_form[field_name].value()
        data['%s-%s' % (current_form.prefix, field_name)] = value if value is not None else ''

# flush out to stdout
print '#' * 30
for i in sorted(data.keys()):
    print i, '\t:', data[i]

# post the request without any change
response = self.client.post(url, data)

重要的提示

如果您data在调用之前进行了修改self.client.post，则可能会使数据库发生突变。结果，后续的调用self.client.get可能不会产生相同的数据，尤其是对于管理表单和表单在表单集中的顺序而言（因为根据基础查询集，它们的顺序可以不同）。这意味着

• 如果修改data[form-3-somefield]和调用self.client.get，这同一领域可能出现在说data[form-8-somefield]，
• 如果您data在之前进行修改self.client.post，则无法self.client.post使用进行相同的data调用：您必须调用self.client.get并data再次进行重构。