Wanting to Contribute

[Skyler Cain]

Hello all!

I've read this: https://docs.djangoproject.com/en/3.1/intro/contributing/

But after running my tests I get the following failure (when running all or individual). Any thoughts / suggestions would be much appreciated.

(django) skylercain:~/code/django/tests [master]$ ./runtests.py schema.tests.SchemaTests.test_db_table

Testing against Django installed in '/Users/skylercain/code/django/django'

Creating test database for alias 'default'...

System check identified no issues (0 silenced).

F

======================================================================

FAIL: test_db_table (schema.tests.SchemaTests)

Tests renaming of the table

----------------------------------------------------------------------

Traceback (most recent call last):

  File "/Users/skylercain/code/django/django/test/utils.py", line 382, in inner

    return func(*args, **kwargs)

  File "/Users/skylercain/code/django/tests/schema/tests.py", line 2339, in test_db_table

    self.assertForeignKeyExists(Book, "author_id", "schema_otherauthor")

  File "/Users/skylercain/code/django/tests/schema/tests.py", line 213, in assertForeignKeyExists

    self.assertEqual(constraint_fk, (expected_fk_table, field))

AssertionError: Tuples differ: ('schema_author', 'id') != ('schema_otherauthor', 'id')

First differing element 0:

'schema_author'

'schema_otherauthor'

- ('schema_author', 'id')

+ ('schema_otherauthor', 'id')

?          +++++

----------------------------------------------------------------------

Ran 1 test in 0.015s

FAILED (failures=1)

Destroying test database for alias 'default'...

[Carlton Gibson]

Hi Skyler. 

Welcome. 

That’ll be your SQLite version. 

MacOS tends to bundle an old one — and updating can be a little tricky because of the “System integrity protection”, not letting you specify a DYLD_LIBRARY_PATH.

See the instructions here for getting a newer SQLite version: 

https://code.djangoproject.com/wiki/JSON1Extension

It might not work because of SIP. 

Try this: 

~ $ DYLD_LIBRARY_PATH="testing" python -c "import os; print(os.getenv('DYLD_LIBRARY_PATH'))"

None

If you get that your Python is running via SIP. You’ll need to install Python in your home folder somewhere. 

I use pyenv but the shims that use still go view /bin/env, so SIP is in play. 

You have to do this kind of thing: 

~ $ DYLD_LIBRARY_PATH="testing" $(pyenv which python) -c "import os; print(os.getenv('DYLD_LIBRARY_PATH'))"

testing

Hopefully that makes sense and helps. If not reply and I’ll see if I can help some more. 

You can always ignore the failure, or use Postgres: 

https://postgresapp.com is a very easy to get going with. 

Kind regards, Carlton 

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[Skyler Cain]

I ran the code to ensure that JSON1 extension is working within sqlite3. Can I check which version I need -- is that somewhere? Also if the JSON1 extension is working what other functionality do I need to check for? 

I was not using a customly installed version of python -- which I've now switched to. However I'm still getting the same error message. I ran your code to set and test the DYLD_LIBRARY_PATH and the first example worked for me.

Thanks for your help I'd like to get everything working if possible then move on to PostgreSQL.

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[Carlton Gibson]

> I ran your code to set and test the DYLD_LIBRARY_PATH and the first example worked for me.

Did it give None or ‘testing’ — only if the latter is the environment variable reaching the Python process. (So only they can you override the default version)

~ $ python -c "import sqlite3; print(sqlite3.sqlite_version)"

3.32.3

Minimum version is currently 3.8.3

https://docs.djangoproject.com/en/3.1/ref/databases/#sqlite-notes

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[Skyler Cain]

I got 'testing' returned. With that command I'm getting:

(django-2) skylercain:~/code/django [master]$ python -c "import sqlite3; print(sqlite3.sqlite_version)"
3.32.3

Should I try an earlier version?

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[Carlton Gibson]

OK, this was reported as https://code.djangoproject.com/ticket/31765, something* to do with macOS's bundled SQLite. 

* technical term. 

There's a workaround in master — https://github.com/django/django/commit/80a8be03d9321669a239dbced8ac48a4ebbbb7e1 

I assume you're running against that, so can you perhaps comment on the issue with your `platform.mac_ver()` and we can have a look. 

Thanks! 

[Skyler Cain]

Should I add a comment to the closed Django issue?

[Carlton Gibson]

If you comment there, with sufficient details I can try to reproduce it. 

To view this discussion on the web visit https://groups.google.com/d/msgid/django-developers/0b45a0b6-444a-476e-804a-88110eac0f83n%40googlegroups.com.

[Skyler Cain]

Done and Thanks!

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[Carlton Gibson]

Thank you for bringing it up! 

And welcome aboard! I hope you have fun contributing! 

Kind regards, Carlton