在Django中测试表单视图时指定提交按钮

我正在尝试测试django表单视图：

tests.py

但我的视图会检查用于提交表单的按钮：

views.py

如何模拟在测试中提交表单时使用的“注释”按钮？

将注释按钮字段添加到表单数据中

添加注释按钮字段以形成注释数据

form_data = {
    'comment_text': "test comment"
}
response = self.client.post(reverse('announcements:comment', args=[self.test_announcement.id]), form_data)
self.assertEqual(response.status_code, 404)  # invalid submit button

def my_view(request, announcement_id):
  # ...

  if request.method == "POST":
    form = CommentForm(request.POST)
    if form.is_valid():
       # ...
       if 'comment_button' in request.POST:  
           # how do I get inside this branch from a test?
           # process form
       else:
           raise Http404

form_data = {
    'comment_text': "test comment",  
    'comment_button': True
}