Question

我正在测试本教程中的django应用程序：http://tutorial.djangogirls.org/en/django_admin/README.html

我已经创建了一个测试：

from django.test import TestCase
from django.utils import timezone
from .models import Post
from django.contrib.auth.models import User

# Create your tests here.
class PostTest(TestCase):
    def test_create_post(self):
        # Create the post
        post = Post()

        # Set the attributes
        post.author = User
        post.title = 'My first post'
        post.text = 'This is my first blog post'
        post.published_date = timezone.now()
        post.created_date = timezone.now()

        # Save it
        post.save()

        # Check we can find it
        all_posts = Post.objects.all()
        self.assertEquals(len(all_posts), 1)
        only_post = all_posts[0]
        self.assertEquals(only_post, post)

        # Check attributes
        self.assertEquals(only_post.author, User)
        self.assertEquals(only_post.title, 'My first post')
        self.assertEquals(only_post.text, 'This is my first blog post')
        self.assertEquals(only_post.published_date.day, post.published_date.day)
        self.assertEquals(only_post.published_date.month, post.published_date.month)
        self.assertEquals(only_post.published_date.year, post.published_date.year)
        self.assertEquals(only_post.published_date.hour, post.published_date.hour)
        self.assertEquals(only_post.published_date.minute, post.published_date.minute)
        self.assertEquals(only_post.published_date.second, post.published_date.second)
        self.assertEquals(only_post.created_date.day, post.created_date.day)
        self.assertEquals(only_post.created_date.month, post.created_date.month)
        self.assertEquals(only_post.created_date.year, post.created_date.year)
        self.assertEquals(only_post.created_date.hour, post.created_date.hour)
        self.assertEquals(only_post.created_date.minute, post.created_date.minute)
        self.assertEquals(only_post.created_date.second, post.created_date.second)

当我运行python manage.py test时，我收到此错误：

Creating test database for alias 'default'...

ERROR: test_create_post (blog.tests.PostTest)

Traceback (most recent call last):
File     "C:\Users\shenk\Documents\Programming\django_projects\djangogirls\blog\tests.py"    , line 13, in test_create_post
post.author = User
File      "c:\Users\shenk\Documents\Programming\django_projects\djangogirls\myvenv\lib\site-packages\django\db\models\fields\related.py", line 627, in __set__
self.field.rel.to._meta.object_name,
ValueError: Cannot assign "<class 'django.contrib.auth.models.User'>":     "Post.author" must be a "User" instance.

----------------------------------------------------------------------
Ran 1 test in 0.001s

如何创建User实例的对象来测试Post？在我的模型中，它被定义为author = models.ForeignKey('auth.User')

Answer 1

这条线看起来很虚伪：

# Set the attributes
post.author = User

post.author希望您为其分配User类的实例，而不是User类本身。尝试类似：

u = User(...)
u.save()
post.author = u

Django测试用户对象

1 个答案: