pytest-django support for subprocesses

conftest.py

@pytest.fixture(scope='session')
def django_db_setup(request,
                    django_test_environment,
                    django_db_blocker,
                    django_db_use_migrations,
                    django_db_keepdb,
                    django_db_modify_db_settings):
    import pytest_django.compat

    def teardown_databases(db_cfg, verbosity, _teardown_databases=pytest_django.compat.teardown_databases):
        """
        Some nasty stuff to kill the hanging connections. Sometimes teardown can't be performed cause of these hanging
        connections.
        """
        from django.db import connections
        conn = connections['default']
        cursor = conn.cursor()
        cursor.execute("""
            SELECT pg_terminate_backend(pg_stat_activity.pid)
            FROM pg_stat_activity
            WHERE pg_stat_activity.datname = '%s'
              AND pid <> pg_backend_pid();
        """ % conn.creation._get_test_db_name())
        return _teardown_databases(db_cfg, verbosity)

    pytest_django.compat.teardown_databases = teardown_databases

    try:
        from pytest_django.fixtures import django_db_setup

        return django_db_setup(request,
                               django_test_environment,
                               django_db_blocker,
                               django_db_use_migrations,
                               django_db_keepdb,
                               django_db_modify_db_settings)
    finally:
        from django.db import connections
        from django.conf import settings

        conn = connections['default']
        db_name = conn.creation._get_test_db_name()
        conn.force_debug_cursor = True

        os.environ['DJANGO_DATABASE_NAME'] = db_name  # assuming subprocesses inherit env (they should!) 
                                                      # this will make them (eg: celery) use the right db.