id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
32012	"Test runner setup_databases crashes with ""TEST"": {""MIGRATE"": False}."	Jaap Roes	Mariusz Felisiak	"I'm trying to upgrade a project from Django 3.0 to Django 3.1 and wanted to try out the new `""TEST"": {""MIGRATE"": False}` database setting.

Sadly I'm running into an issue immediately when running `./manage.py test`.

Removing the `""TEST"": {""MIGRATE"": False}` line allows the tests to run. So this is not blocking the upgrade for us, but it would be nice if we were able to use the new feature to skip migrations during testing.

For reference, this project was recently upgraded from Django 1.4 all the way to 3.0 so there might be some legacy cruft somewhere that triggers this.

Here's the trackeback. I'll try to debug this some more.

{{{
Traceback (most recent call last):
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py"", line 84, in _execute
    return self.cursor.execute(sql, params)
psycopg2.errors.UndefinedTable: relation ""django_admin_log"" does not exist
LINE 1: ...n_flag"", ""django_admin_log"".""change_message"" FROM ""django_ad...
                                                             ^
The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File ""/usr/local/lib/python3.6/site-packages/django/db/models/sql/compiler.py"", line 1156, in execute_sql
    cursor.execute(sql, params)
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py"", line 66, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py"", line 75, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py"", line 84, in _execute
    return self.cursor.execute(sql, params)
  File ""/usr/local/lib/python3.6/site-packages/django/db/utils.py"", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/utils.py"", line 84, in _execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation ""django_admin_log"" does not exist
LINE 1: ...n_flag"", ""django_admin_log"".""change_message"" FROM ""django_ad...
                                                             ^
During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File ""./manage.py"", line 15, in <module>
    main()
  File ""./manage.py"", line 11, in main
    execute_from_command_line(sys.argv)
  File ""/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py"", line 401, in execute_from_command_line
    utility.execute()
  File ""/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py"", line 395, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/usr/local/lib/python3.6/site-packages/django/core/management/commands/test.py"", line 23, in run_from_argv
    super().run_from_argv(argv)
  File ""/usr/local/lib/python3.6/site-packages/django/core/management/base.py"", line 330, in run_from_argv
    self.execute(*args, **cmd_options)
  File ""/usr/local/lib/python3.6/site-packages/django/core/management/base.py"", line 371, in execute
    output = self.handle(*args, **options)
  File ""/usr/local/lib/python3.6/site-packages/django/core/management/commands/test.py"", line 53, in handle
    failures = test_runner.run_tests(test_labels)
  File ""/usr/local/lib/python3.6/site-packages/django/test/runner.py"", line 695, in run_tests
    old_config = self.setup_databases(aliases=databases)
  File ""/usr/local/lib/python3.6/site-packages/django/test/runner.py"", line 616, in setup_databases
    self.parallel, **kwargs
  File ""/usr/local/lib/python3.6/site-packages/django/test/utils.py"", line 174, in setup_databases
    serialize=connection.settings_dict['TEST'].get('SERIALIZE', True),
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/base/creation.py"", line 78, in create_test_db
    self.connection._test_serialized_contents = self.serialize_db_to_string()
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/base/creation.py"", line 121, in serialize_db_to_string
    serializers.serialize(""json"", get_objects(), indent=None, stream=out)
  File ""/usr/local/lib/python3.6/site-packages/django/core/serializers/__init__.py"", line 128, in serialize
    s.serialize(queryset, **options)
  File ""/usr/local/lib/python3.6/site-packages/django/core/serializers/base.py"", line 90, in serialize
    for count, obj in enumerate(queryset, start=1):
  File ""/usr/local/lib/python3.6/site-packages/django/db/backends/base/creation.py"", line 118, in get_objects
    yield from queryset.iterator()
  File ""/usr/local/lib/python3.6/site-packages/django/db/models/query.py"", line 360, in _iterator
    yield from self._iterable_class(self, chunked_fetch=use_chunked_fetch, chunk_size=chunk_size)
  File ""/usr/local/lib/python3.6/site-packages/django/db/models/query.py"", line 53, in __iter__
    results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
  File ""/usr/local/lib/python3.6/site-packages/django/db/models/sql/compiler.py"", line 1159, in execute_sql
    cursor.close()
psycopg2.errors.InvalidCursorName: cursor ""_django_curs_139860821038912_sync_1"" does not exist
}}}"	Bug	closed	Testing framework	3.1	Release blocker	fixed	testrunner crash setup database migrations disabled	Jon Dufresne	Ready for checkin	1	0	0	0	0	0