我正在编写一些测试来检查基本博客应用程序的模型。该模型要求博客标题是唯一的。以下是我为保存两篇博文而编写的测试正文:
first_post.title = "First Post!"
first_post.body = "This is the body of the first post"
first_post.pub_date = datetime.date.today()
first_post.tags = all_tags[0]
first_post.slug = "first_post"
first_post.save()
second_post = Post()
second_post.title = "Second Post!"
self.assertNotEqual(first_post.title,second_post.title)
second_post.body = "This is the body of the Second post"
second_post.pub_date = datetime.date.today()
second_post.tags = all_tags[1]
second_post.slug = "second"
second_post.save()
注意 self.assertNotEqual(first_post.title, second_post.title)。我添加这个是因为当我运行测试时，我不断收到 django.db.utils.IntegrityError: UNIQUE constraint failed: blog_post.title_text。当我完成与此一起吐出的其余 vomitext 时，它指向 second_post.save()。但是，assertNotEqual 总是通过，如果我将它更改为 assertEqual 它会失败。
无论我在 title 值中输入什么，我都会得到同样的错误。为什么这两个 Post 对象被认为具有相同的标题？
作为引用，这里是博客模型:
class Post(models.Model):
title_text = models.CharField(max_length = 200, unique = True)
pub_date = models.DateTimeField('date published')
post_tags = models.ManyToManyField('Tag')
post_body = models.TextField()
slug = models.SlugField(max_length = 50, unique = True)
请您参考如下方法:
模型中的字段名为 title_text，但在测试中使用的是 title。所以 title_text 的 db 值在这两种情况下都将是 ""。
更改为:
first_post.title_text = "First Post!"
first_post.body = "This is the body of the first post"
first_post.pub_date = datetime.date.today()
first_post.tags = all_tags[0]
first_post.slug = "first_post"
first_post.save()
second_post = Post()
second_post.title_text = "Second Post!"
self.assertNotEqual(first_post.title_text,second_post.title_text)
second_post.body = "This is the body of the Second post"
second_post.pub_date = datetime.date.today()
second_post.tags = all_tags[1]
second_post.slug = "second"
second_post.save()
