相关疑难解决方法(0)

我正在尝试测试我的Django视图.此视图将QuerySet传递给模板:

def merchant_home(request, slug):
  merchant = Merchant.objects.get(slug=slug)
  product_list = merchant.products.all()
  return render_to_response('merchant_home.html',
                            {'merchant': merchant,
                            'product_list': product_list},
                            context_instance=RequestContext(request))

并测试:

  def test(self):
    "Merchant home view should send merchant and merchant products to the template"
    merchant = Merchant.objects.create(name='test merchant')
    product = Product.objects.create(name='test product', price=100.00)
    merchant.products.add(product)

    test_client = Client()
    response = test_client.get('/' + merchant.slug)
    # self.assertListEqual(response.context['product_list'], merchant.products.all())
    self.assertQuerysetEqual(response.context['product_list'], merchant.products.all())

编辑 我用的是self.assertQuerysetEqual而不是self.assertListEqual.不幸的是,这仍然无效,终端显示: ['<Product: Product object>'] != [<Product: Product object>]

assertListEqual提出:'QuerySet' object has no attribute 'difference'并且 assertEqual也不起作用,虽然self.assertSetEqual(response.context['product_list'][0], …

我想知道TestCase.assertQuerysetEqual方法是如何工作的.我以不同的方式尝试了它,每个都引导我另一个错误信息.

#create a backup of all records in the tree
tree_record_backup = list(Tree.objects.all())

#do some updates on another table, which should not affect the tree table if everything goes wrong

#check if list of tree records did not changed
tree_record_qs = Tree.objects.all()
#Number1:
self.assertQuerysetEqual(tree_record_qs,[repr(tree_record_backup)])
#Number2:
self.assertQuerysetEqual(tree_record_qs,tree_record_backup)

Number1的错误消息:

First list contains 21 additional elements.
First extra element 1:
node.pk: 2 - node: node2 - pk: 2 - level: 0 - ancestor: 2

第2个错误消息:

AssertionError: Lists differ: ['<Tree: node.pk: 1 - node: …