[Django] #28235: LiveServerTestCase crashes because it got a ParseResultBytes instance

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Django

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May 23, 2017, 10:15:14 PM5/23/17
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#28235: LiveServerTestCase crashes because it got a ParseResultBytes instance
---------------------------------------------+------------------------
Reporter: Curtis Maloney | Owner: nobody
Type: Bug | Status: new
Component: Testing framework | Version: 1.11
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 1
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
---------------------------------------------+------------------------
I'm not sure why urllib.parse.urlparse is returning a Bytes result in this
case, but the result is the following error:

{{{
Traceback (most recent call last):
File "/opt/python/3.3.5/lib/python3.3/wsgiref/handlers.py", line 137, in
run
self.result = application(self.environ, self.start_response)
File "/home/travis/virtualenv/python3.3.5/lib/python3.3/site-
packages/django/test/testcases.py", line 1106, in __call__
if not self._should_handle(get_path_info(environ)):
File "/home/travis/virtualenv/python3.3.5/lib/python3.3/site-
packages/django/test/testcases.py", line 1077, in _should_handle
return path.startswith(self.base_url[2]) and not self.base_url[1]
TypeError: startswith first arg must be str or a tuple of str, not bytes
}}}

It's caused by a simple test case:

{{{
class RPCClientTest(LiveServerTestCase):

def setUp(self):
self.rpc = client.RPCClient(self.live_server_url + '/rpc/')

def test_echo(self):
resp = self.rpc.echo(foo='bar')
self.assertEqual(resp, {'foo': 'bar'})
}}}

Where RPCClient uses a requests Session to post to the url.

I've kludged the following patch to make it work:

{{{
diff -urw django/test/testcases.py /home/curtis/src/git/django-
nap/venv/lib/python3.5/site-packages/django/test/testcases.py
--- django/test/testcases.py 2017-05-24 12:08:14.870948448 +1000
+++ /home/curtis/src/git/django-nap/venv/lib/python3.5/site-
packages/django/test/testcases.py 2017-05-24 11:07:53.967738745 +1000
@@ -41,6 +41,11 @@
from django.utils.six.moves.urllib.parse import (
unquote, urljoin, urlparse, urlsplit, urlunsplit,
)
+try:
+ from urllib.parse import ParseResultBytes
+except ImportError:
+ class ParseResultBytes:
+ pass
from django.utils.six.moves.urllib.request import url2pathname
from django.views.static import serve

@@ -1183,6 +1188,8 @@
def __init__(self, application):
self.application = application
self.base_url = urlparse(self.get_base_url())
+ if isinstance(self.base_url, ParseResultBytes):
+ self.base_url = self.base_url.decode('utf-8')
super(FSFilesHandler, self).__init__()

def _should_handle(self, path):
}}}

--
Ticket URL: <https://code.djangoproject.com/ticket/28235>
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Django

unread,
May 23, 2017, 10:17:17 PM5/23/17
to django-...@googlegroups.com
#28235: LiveServerTestCase crashes because it got a ParseResultBytes instance
-----------------------------------+--------------------------------------

Reporter: Curtis Maloney | Owner: nobody
Type: Bug | Status: new
Component: Testing framework | Version: 1.11
Severity: Normal | Resolution:

Keywords: | Triage Stage: Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-----------------------------------+--------------------------------------

Comment (by Curtis Maloney):

As can be seen here the error happens on 1.8 to 1.11.2, and py 3.3 - 3.6

https://travis-ci.org/funkybob/django-nap/builds/235472369

--
Ticket URL: <https://code.djangoproject.com/ticket/28235#comment:1>

Django

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May 23, 2017, 10:52:16 PM5/23/17
to django-...@googlegroups.com
#28235: LiveServerTestCase crashes because it got a ParseResultBytes instance
-----------------------------------+--------------------------------------

Reporter: Curtis Maloney | Owner: nobody
Type: Bug | Status: new
Component: Testing framework | Version: 1.11
Severity: Normal | Resolution:

Keywords: | Triage Stage: Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-----------------------------------+--------------------------------------

Comment (by Curtis Maloney):

Setting STATIC_URL in settings fixed this issue.

--
Ticket URL: <https://code.djangoproject.com/ticket/28235#comment:2>

Django

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May 25, 2017, 6:33:59 AM5/25/17
to django-...@googlegroups.com
#28235: LiveServerTestCase crashes because it got a ParseResultBytes instance
-----------------------------------+--------------------------------------

Reporter: Curtis Maloney | Owner: nobody
Type: Bug | Status: new
Component: Testing framework | Version: 1.11
Severity: Normal | Resolution:

Keywords: | Triage Stage: Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-----------------------------------+--------------------------------------

Comment (by Tim Graham):

Do you plan to investigate further as to whether your patch is a good
approach?

--
Ticket URL: <https://code.djangoproject.com/ticket/28235#comment:3>

Django

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May 31, 2017, 9:14:23 AM5/31/17
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#28235: LiveServerTestCase crashes because it got a ParseResultBytes instance
-----------------------------------+--------------------------------------

Reporter: Curtis Maloney | Owner: nobody
Type: Bug | Status: closed

Component: Testing framework | Version: 1.11
Severity: Normal | Resolution: invalid

Keywords: | Triage Stage: Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-----------------------------------+--------------------------------------
Changes (by Tim Graham):

* status: new => closed
* resolution: => invalid


--
Ticket URL: <https://code.djangoproject.com/ticket/28235#comment:4>

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