python - Django test url always returns 404, but browsing the url with a browser is normal. What's going on?

Question

The test code is as follows:

from django.test import TestCase
# Create your tests here.

class SendviewsTestCase(TestCase):

    def test_get_data(self):
        rep = self.client.post('/data/datamsg/',{'data_name':'测试数据'})
        print (rep.content)
        # 测试http请求的返回码是否正确
        self.assertEqual(rep.status_code,200)

======================================================================
FAIL: test_get_data (dataforpro.tests.SendviewsTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/yangtz/developproject/backend/dataforpro/tests.py", line 20, in test_get_data
    self.assertEqual(rep.status_code,200)
AssertionError: 404 != 200

----------------------------------------------------------------------
Ran 1 test in 0.017s

FAILED (failures=1)
Destroying test database for alias 'default'...

But when browsing the URL with a browser, it returns 200 normally. Is there something wrong with the setting?

Answer 1

It seems that your error is 404, which means that the url was not found when accessing /data/datamsg/. It depends on how your url address is configured. Try /data/datamsg and remove the / after it, or maybe it is what you want. Add http://localhost or something like that

Answer 2

You said you can browse the url with a browser
When you access the url through the browser, the browser will send a GET request
but you used a POST request in the test.

So even if there is no connection between the browser being normal and the test passing or not

Answer 3

404 appears, it should be as 1L said, the URL (host part) needs to be completed. Because when requesting through the browser, the URL in the page starts with /, and the browser will automatically add the host; and in the unit test case, you must write the complete URL yourself.
When 302 appears, you have to check: Which URL does 302 jump to? Where did you add any restrictions/validation conditions? For example, if "login_required" is added, if the system checks that there is no login, will it automatically jump to the login page with a 302?
There is another possibility. It should be 403. You forged a POST request, and Django has CSRF verification by default.