python之在 Django 中测试 extra_context

我正在尝试测试用户提供的 extra_context 是否被正确处理 在 View 中。

这是我的测试方法:

# tests.py (of course it's a part of TestCase class) 
def test_should_use_definied_extra_context(self): 
    response = self.client.get(reverse('contact_question_create'), { 
        'extra_context': {'foo': 'bar', 'callable': lambda: 'called'} 
    }) 
    eq_(response.context['foo'], 'bar') 
    eq_(response.context['callable'], 'called') 

这是我的 View 函数:

# views.py (my view function) 
def contact_question_create(request, success_url=None, form_class=None, 
                        template_name="contact/contact_form.html", 
                        extra_context=None, **kwargs): 
if form_class is None: 
    form_class = forms.DefaultContactForm 
 
if request.method == 'POST': 
    form = form_class(data=request.POST, files=request.FILES) 
    if form.is_valid(): 
        signals.question_posted.send(sender='contact_question_create_view', 
                                     form_data=form.cleaned_data) 
        if success_url is None: 
            pass # TODO: implement this case 
        else: 
            return redirect(sucess_url) 
else: 
    form = form_class() 
 
if extra_context is None: 
    extra_context = {} 
context = RequestContext(request) 
for key, value in extra_context.items(): 
    context[key] = callable(value) and value() or value 
 
return render_to_response(template_name, 
                          {'form':form}, 
                          context_instance=context) 

运行测试时，出现以下 KeyError 异常:

====================================================================== 
ERROR: test_should_use_definied_extra_context (mpozyczka.apps.contact.tests.ContactViewShouldUseRequestedValues) 
---------------------------------------------------------------------- 
Traceback (most recent call last): 
  File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/unittest.py", 
      line 279, in run testMethod() 
  File "/Users/bx2/Dropbox/Projekty/mpozyczka/src/mpozyczka/apps/contact/tests.py",  
      line 56, in test_should_use_definied_extra_context  
      eq_(response.context['foo'], 'bar') 
  File "/Users/bx2/Dropbox/Projekty/mpozyczka/parts/django/django/test/utils.py",  
      line 35, in __getitem__ raise KeyError(key) 
  KeyError: 'foo' 

我觉得我太累了，我没有看到问题 - 关于我错过了什么的任何线索？

请您参考如下方法:

您需要使用以下解决方案:

def contact_question_create(request, success_url=None, form_class=None, 
                        template_name="contact/contact_form.html", 
                        extra_context=None, **kwargs): 
 
    # your view code here 
 
    context = {'defult':'foo'} 
 
    if extra_context: 
        context.update(extra_context) 
 
    return render_to_response(template_name, 
                              context, 
                              context_instance=RequestContext(request, context)) 

测试它时，您需要在 url.py 或调用您的 View 的 View 中传递 extra_context。

def my_view(reuest): 
    return contact_question_create(extra_context={'foo':'bar'})