Hi Ferran,
It looks like opt.option_strings is empty because "poll_ids" (in
parser.add_argument()) isn't prefixed with a dash or double dash.
You could instead use call_command() like this: call_command("closepoll", 1)
But I think your invocation could be fixed (or at least not fail so
obscurely).
On Sunday, October 2, 2022 at 7:49:26 AM UTC-4 Ferran Jovell wrote:
> Hello everyone,
>
> I was working on a admin command today, and when setting up tests and
> fixtures for running the command during testing I found this error:
>
> Traceback (most recent call last):
> File "/home/fjm/code/django-stuff/tutorial/polls/tests.py", line 10, in
> test_command_output
> call_command("closepoll", poll_ids=1, stdout=out)
> File
> "/home/fjm/.local/share/virtualenvs/tutorial/lib/python3.10/site-packages/django/core/management/__init__.py",
>
> line 168, in call_command
> parse_args.append(min(opt.option_strings), default=0)
> ValueError: min() arg is an empty sequence
>
> However, what is weird is that when run from with the manage.py script,
> everything seems to be working just fine.
>
> This is the command code
>
> from django.core.management.base import BaseCommand
>
>
> class Command(BaseCommand):
> def add_arguments(self, parser):
> parser.add_argument("poll_ids", nargs="+", type=int)
>
> def handle(self, *args, **options):
> pass
>
> And this is the test code:
> from io import StringIO
>
> from django.core.management import call_command
> from django.test import SimpleTestCase
>
>
> class ClosepollTest(SimpleTestCase):
> def test_command_output(self):
> out = StringIO()
> call_command("closepoll", poll_ids=1, stdout=out)
> self.assertIn("Expected output", out.getvalue())
>
> I set up a repo with the minimal code to reproduce this:
> https://github.com/mrswats/django-polls-test
> Is this a bug? Am I doing something wrong? Have I missed anything?
>
> I checked the bug tracker but could not find anything related to this and
> before opening an issue I figured I'd ask. If it is indeed a bug I will
> happily write a ticket in the tracker.
>
> Thanks in advance.
>
>
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