为什么这个 Django 测试能够通过？

单独调用send_mail函数会因为主题中的换行符而导致BadHeaderError异常。

我预计这个 test_newline_causes_exception 也会失败，但事实并非如此。这是 Django 1.3 中的内容。有任何想法吗？

from django.core.mail import send_mail
from django.utils import unittest

class EmailTestCase(unittest.TestCase):

    def test_newline_causes_exception(self):
        send_mail('Header\nInjection', 'Here is the message.', '[email protected] /cdn-cgi/l/email-protection',
                  ['[email protected] /cdn-cgi/l/email-protection'], fail_silently=False)

EDIT:这个新测试表明，在测试中使用 send_mail 时，不会调用标头检查代码 (django.core.mail.message.forbid_multi_line_headers)。

from django.core.mail import send_mail, BadHeaderError, outbox
from django.utils import unittest

class EmailTestCase(unittest.TestCase):

    def test_newline_in_subject_should_raise_exception(self):

        try:
            send_mail('Subject\nhere', 'Here is the message.',
                      '[email protected] /cdn-cgi/l/email-protection', ['[email protected] /cdn-cgi/l/email-protection'], fail_silently=False)
        except BadHeaderError:
            raise Exception

        self.assertEqual(len(outbox), 1)

        self.assertEqual(outbox[0].subject, 'Subject here')

Result:

AssertionError: 'Subject\nhere' != 'Subject here'

你并没有真正测试任何东西。测试意味着检查是否BadHeaderError是否已被提出。如果断言测试为假，则测试将失败。你可以做这样的事情 -

def test_newline_causes_exception(self)
    error_occured = False
    try:
        send_mail('Header\nInjection', 'Here is the message.', '[email protected] /cdn-cgi/l/email-protection',
                  ['[email protected] /cdn-cgi/l/email-protection'], fail_silently=False)
    except BadHeaderError:
        error_occured = True

    self.assertTrue(error_ocurred)

我还没有测试过。但它应该有效。

PS: from django.core.mail import send_mail, BadHeaderError