我有一个基于Django函数的表单视图,在GET请求中用默认数据初始化表单,在POST请求中保存模型对象。
def copy(request, ann_id):
new_ann = get_object_or_404(Announcement, pk=ann_id)
new_ann.pk = None # autogen a new primary key (quest_id by default)
new_ann.title = "Copy of " + new_ann.title
new_ann.draft = True
new_ann.datetime_released = new_ann.datetime_released + timedelta(days=7)
form = AnnouncementForm(request.POST or None, instance=new_ann)
if form.is_valid():
new_announcement = form.save(commit=False)
new_announcement.author = request.user
new_announcement.datetime_created = timezone.now()
new_announcement.save()
form.save()
return redirect(new_announcement)
context = {
"title": "",
"heading": "Copy an Announcement",
"form": form,
"submit_btn_value": "Create",
}
return render(request, "announcements/form.html", context)
我不知道该如何测试 form.is_valid()
分支,而无需手动将表单数据提供给 self.client.post(url, form_data)
在我看来
下面是我的尝试。
test_views. py
class AnnouncementViewTests(TestCase):
def setUp(self):
self.client = ...
... etc
def test_copy_announcement(self):
# log in a teacher
success = self.client.login(username=self.test_teacher.username, password=self.test_password)
self.assertTrue(success)
# hit the view as a get request first, to load a copy of the announcement in the form
response = self.client.get(
reverse('announcements:copy', args=[self.test_announcement.id]),
)
self.assertEqual(response.status_code, 200)
# The form in this response should be valid, and should bw
# accepted on a post request,
# that is what I am testing in this integration test.
form_data = response.how_do_get_the_form_data() # ???????
response = self.client.post(
reverse('announcements:copy', args=[self.test_announcement.id]),
data=form_data
)
# Get the newest announcement just made in the post request
new_ann = Announcement.objects.latest('datetime_created')
self.assertRedirects(
response,
new_ann.get_absolute_url()
)
我想实际测试的是,测试的结果是 get
为表单提供有效的默认数据,然后可以通过 post
请求。
但我不知道如何访问由该请求产生的表单数据。get
请求,这样我就可以把它输入到提供给form_data的 post
请求。
编辑
我在get响应中找到了表单的位置,但我不知道如何在代码中获取。
你可以用这种方式访问响应表单。
response.context['form']
从这里你可以用这种方式建立你的有效载荷:
retrieved_instance = response.context['form'].instance
form_data = dict(title=retrieved_instance.title, ... <all the other fields>)
response = self.client.post(
reverse('announcements:copy', args=[self.test_announcement.id]),
data=form_data)
)
这和重新提交页面不一样,但非常相似,因为你是在重新提交同一个表单。
实际上,你的测试看起来更像是e2e测试(说到集成和e2e的时候会有一些歧义,比方说),为此,如果我是你,我会切换 "工具",用selenium来模拟一个用户交互,从开始(打开一个现有的公告)到结束,按下网页上的提交按钮。
只有这样,你提交的才是 "真实 "的响应,"获取"
如果你对这种测试很陌生,你可以在这里找到一个简单的教程。https:/lincolnloop.comlogintroduction-django-selenium-testing。 来理解主要概念。
你的问题有点混乱,但我会试着引导你走向正确的方向。
要清理代码,你应该使用 基于类的视图 在那里你可以很容易地在任何地方使用你的表格。我刚刚写了一个示例代码。
class TestView(View):
template_name = 'index.html'
success_url = 'home' # dummy view
context = {"form": myform()}
# myform is the definition/class of your form which contains all attrs.
def get(self, request):
context = self.context
context['form'] = form # fill out your data here for get request
return render(request, self.template_name, context)
def post(self, request):
context=self.context
# self.context certain that you're using exact form which you defined in class-scope
form=context['form']
# Form Validation
if form.is_valid():
#perform any logical validations here and save the form if required
return redirect(self.success_url)
context = self.context
context['form'] = form # just to show you that you can access that form anywhere
return render(request, self.template_name, context)
你可以像这样手动传递数据到你的表单中,然后测试一下 is_valid
单元测试中的函数。
form_data = {'my': 'value', 'form': 'value', 'fields': 'value'}
form = AnnouncementForm(form_data)
self.assertFalse(form.is_valid)