Django 1.4 - assertQuerysetEqual - 如何使用方法 [英] Django 1.4 - assertQuerysetEqual - how to use method

问题描述

我想知道TestCase.assertQuerysetEqual方法是如何工作的。我以不同的方式尝试过，每个都导致我另一个错误消息。

I'm wondering how the TestCase.assertQuerysetEqual method works. I tried it in different ways, each of them leading me to another error message.

#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：

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

数字2的错误消息：

AssertionError: Lists differ: ['<Tree: node.pk: 1 - node: ro... != [<Tree: node.pk: 1 - node: roo...

First differing element 0:
<Tree: node.pk: 1 - node: root - pk: 1 - level: 0 - ancestor: 1>
node.pk: 1 - node: root - pk: 1 - level: 0 - ancestor: 1

感谢提供如何正确使用assertQuerysetEqual方法的提示。

Thanks for hints how to use the assertQuerysetEqual method correctly.

推荐答案

尝试这个：

self.assertQuerysetEqual(
    tree_record_qs,
    [repr(r) for r in tree_record_backup]
)

这有点怪异，没有文档;但是，这应该适合你。

it's a bit weird and undocumented; but, that should work for you.

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