Fixed #11900 -- Corrected an edge case of transaction handling in the...

                    raise

                else:

                    if is_dirty(using=db):

                        try:

                            commit(using=db)

                        except:

                            rollback(using=db)

                            raise

                return res

            finally:

                leave_transaction_management(using=db)

TransactionManagementError: Transaction managed block ended with pending COMMIT/ROLLBACK

"""

# Regression for #11900: If a function wrapped by commit_on_success writes a

# transaction that can't be committed, that transaction should be rolled back.

# The bug is only visible using the psycopg2 backend, though

# the fix is generally a good idea.

pgsql_backends = ('django.db.backends.postgresql_psycopg2', 'postgresql_psycopg2',)

if building_docs or settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'] in pgsql_backends:

    __test__['API_TESTS'] += """

>>> def execute_bad_sql():

...     cursor = connection.cursor()

...     cursor.execute("INSERT INTO transactions_reporter (first_name, last_name) VALUES ('Douglas', 'Adams');")

...     transaction.set_dirty()

...

>>> execute_bad_sql = transaction.commit_on_success(execute_bad_sql)

>>> execute_bad_sql()

Traceback (most recent call last):

    ...

IntegrityError: null value in column "email" violates not-null constraint

<BLANKLINE>

"""