/usr/lib/python2.7/dist-packages/celery/tests/fixups/test_django.py is in python-celery 3.1.20-1.
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import os
from contextlib import contextmanager
from celery.fixups.django import (
_maybe_close_fd,
fixup,
DjangoFixup,
DjangoWorkerFixup,
)
from celery.tests.case import (
AppCase, Mock, patch, patch_many, patch_modules, mask_modules,
)
class FixupCase(AppCase):
Fixup = None
@contextmanager
def fixup_context(self, app):
with patch('celery.fixups.django.DjangoWorkerFixup.validate_models'):
with patch('celery.fixups.django.symbol_by_name') as symbyname:
with patch('celery.fixups.django.import_module') as impmod:
f = self.Fixup(app)
yield f, impmod, symbyname
class test_DjangoFixup(FixupCase):
Fixup = DjangoFixup
def test_fixup(self):
with patch('celery.fixups.django.DjangoFixup') as Fixup:
with patch.dict(os.environ, DJANGO_SETTINGS_MODULE=''):
fixup(self.app)
self.assertFalse(Fixup.called)
with patch.dict(os.environ, DJANGO_SETTINGS_MODULE='settings'):
with mask_modules('django'):
with self.assertWarnsRegex(UserWarning, 'but Django is'):
fixup(self.app)
self.assertFalse(Fixup.called)
with patch_modules('django'):
fixup(self.app)
self.assertTrue(Fixup.called)
def test_maybe_close_fd(self):
with patch('os.close'):
_maybe_close_fd(Mock())
_maybe_close_fd(object())
def test_init(self):
with self.fixup_context(self.app) as (f, importmod, sym):
self.assertTrue(f)
def se(name):
if name == 'django.utils.timezone:now':
raise ImportError()
return Mock()
sym.side_effect = se
self.assertTrue(self.Fixup(self.app)._now)
def test_install(self):
self.app.loader = Mock()
with self.fixup_context(self.app) as (f, _, _):
with patch_many('os.getcwd', 'sys.path',
'celery.fixups.django.signals') as (cw, p, sigs):
cw.return_value = '/opt/vandelay'
f.install()
sigs.worker_init.connect.assert_called_with(f.on_worker_init)
self.assertEqual(self.app.loader.now, f.now)
self.assertEqual(self.app.loader.mail_admins, f.mail_admins)
p.append.assert_called_with('/opt/vandelay')
def test_now(self):
with self.fixup_context(self.app) as (f, _, _):
self.assertTrue(f.now(utc=True))
self.assertFalse(f._now.called)
self.assertTrue(f.now(utc=False))
self.assertTrue(f._now.called)
def test_mail_admins(self):
with self.fixup_context(self.app) as (f, _, _):
f.mail_admins('sub', 'body', True)
f._mail_admins.assert_called_with(
'sub', 'body', fail_silently=True,
)
def test_on_worker_init(self):
with self.fixup_context(self.app) as (f, _, _):
with patch('celery.fixups.django.DjangoWorkerFixup') as DWF:
f.on_worker_init()
DWF.assert_called_with(f.app)
DWF.return_value.install.assert_called_with()
self.assertIs(f._worker_fixup, DWF.return_value)
class test_DjangoWorkerFixup(FixupCase):
Fixup = DjangoWorkerFixup
def test_init(self):
with self.fixup_context(self.app) as (f, importmod, sym):
self.assertTrue(f)
def se(name):
if name == 'django.db:close_old_connections':
raise ImportError()
return Mock()
sym.side_effect = se
self.assertIsNone(self.Fixup(self.app)._close_old_connections)
def test_install(self):
self.app.conf = {'CELERY_DB_REUSE_MAX': None}
self.app.loader = Mock()
with self.fixup_context(self.app) as (f, _, _):
with patch_many('celery.fixups.django.signals') as (sigs, ):
f.install()
sigs.beat_embedded_init.connect.assert_called_with(
f.close_database,
)
sigs.worker_ready.connect.assert_called_with(f.on_worker_ready)
sigs.task_prerun.connect.assert_called_with(f.on_task_prerun)
sigs.task_postrun.connect.assert_called_with(f.on_task_postrun)
sigs.worker_process_init.connect.assert_called_with(
f.on_worker_process_init,
)
def test_on_worker_process_init(self):
with self.fixup_context(self.app) as (f, _, _):
with patch('celery.fixups.django._maybe_close_fd') as mcf:
_all = f._db.connections.all = Mock()
conns = _all.return_value = [
Mock(), Mock(),
]
conns[0].connection = None
with patch.object(f, 'close_cache'):
with patch.object(f, '_close_database'):
f.on_worker_process_init()
mcf.assert_called_with(conns[1].connection)
f.close_cache.assert_called_with()
f._close_database.assert_called_with()
mcf.reset_mock()
_all.side_effect = AttributeError()
f.on_worker_process_init()
mcf.assert_called_with(f._db.connection.connection)
f._db.connection = None
f.on_worker_process_init()
def test_on_task_prerun(self):
task = Mock()
with self.fixup_context(self.app) as (f, _, _):
task.request.is_eager = False
with patch.object(f, 'close_database'):
f.on_task_prerun(task)
f.close_database.assert_called_with()
task.request.is_eager = True
with patch.object(f, 'close_database'):
f.on_task_prerun(task)
self.assertFalse(f.close_database.called)
def test_on_task_postrun(self):
task = Mock()
with self.fixup_context(self.app) as (f, _, _):
with patch.object(f, 'close_cache'):
task.request.is_eager = False
with patch.object(f, 'close_database'):
f.on_task_postrun(task)
self.assertTrue(f.close_database.called)
self.assertTrue(f.close_cache.called)
# when a task is eager, do not close connections
with patch.object(f, 'close_cache'):
task.request.is_eager = True
with patch.object(f, 'close_database'):
f.on_task_postrun(task)
self.assertFalse(f.close_database.called)
self.assertFalse(f.close_cache.called)
def test_close_database(self):
with self.fixup_context(self.app) as (f, _, _):
f._close_old_connections = Mock()
f.close_database()
f._close_old_connections.assert_called_with()
f._close_old_connections = None
with patch.object(f, '_close_database') as _close:
f.db_reuse_max = None
f.close_database()
_close.assert_called_with()
_close.reset_mock()
f.db_reuse_max = 10
f._db_recycles = 3
f.close_database()
self.assertFalse(_close.called)
self.assertEqual(f._db_recycles, 4)
_close.reset_mock()
f._db_recycles = 20
f.close_database()
_close.assert_called_with()
self.assertEqual(f._db_recycles, 1)
def test__close_database(self):
with self.fixup_context(self.app) as (f, _, _):
conns = [Mock(), Mock(), Mock()]
conns[1].close.side_effect = KeyError('already closed')
f.database_errors = (KeyError, )
f._db.connections = Mock() # ConnectionHandler
f._db.connections.all.side_effect = lambda: conns
f._close_database()
conns[0].close.assert_called_with()
conns[1].close.assert_called_with()
conns[2].close.assert_called_with()
conns[1].close.side_effect = KeyError('omg')
with self.assertRaises(KeyError):
f._close_database()
class Object(object):
pass
o = Object()
o.close_connection = Mock()
f._db = o
f._close_database()
o.close_connection.assert_called_with()
def test_close_cache(self):
with self.fixup_context(self.app) as (f, _, _):
f.close_cache()
f._cache.cache.close.assert_called_with()
f._cache.cache.close.side_effect = TypeError()
f.close_cache()
def test_on_worker_ready(self):
with self.fixup_context(self.app) as (f, _, _):
f._settings.DEBUG = False
f.on_worker_ready()
with self.assertWarnsRegex(UserWarning, r'leads to a memory leak'):
f._settings.DEBUG = True
f.on_worker_ready()
def test_mysql_errors(self):
with patch_modules('MySQLdb'):
import MySQLdb as mod
mod.DatabaseError = Mock()
mod.InterfaceError = Mock()
mod.OperationalError = Mock()
with self.fixup_context(self.app) as (f, _, _):
self.assertIn(mod.DatabaseError, f.database_errors)
self.assertIn(mod.InterfaceError, f.database_errors)
self.assertIn(mod.OperationalError, f.database_errors)
with mask_modules('MySQLdb'):
with self.fixup_context(self.app):
pass
def test_pg_errors(self):
with patch_modules('psycopg2'):
import psycopg2 as mod
mod.DatabaseError = Mock()
mod.InterfaceError = Mock()
mod.OperationalError = Mock()
with self.fixup_context(self.app) as (f, _, _):
self.assertIn(mod.DatabaseError, f.database_errors)
self.assertIn(mod.InterfaceError, f.database_errors)
self.assertIn(mod.OperationalError, f.database_errors)
with mask_modules('psycopg2'):
with self.fixup_context(self.app):
pass
def test_sqlite_errors(self):
with patch_modules('sqlite3'):
import sqlite3 as mod
mod.DatabaseError = Mock()
mod.InterfaceError = Mock()
mod.OperationalError = Mock()
with self.fixup_context(self.app) as (f, _, _):
self.assertIn(mod.DatabaseError, f.database_errors)
self.assertIn(mod.InterfaceError, f.database_errors)
self.assertIn(mod.OperationalError, f.database_errors)
with mask_modules('sqlite3'):
with self.fixup_context(self.app):
pass
def test_oracle_errors(self):
with patch_modules('cx_Oracle'):
import cx_Oracle as mod
mod.DatabaseError = Mock()
mod.InterfaceError = Mock()
mod.OperationalError = Mock()
with self.fixup_context(self.app) as (f, _, _):
self.assertIn(mod.DatabaseError, f.database_errors)
self.assertIn(mod.InterfaceError, f.database_errors)
self.assertIn(mod.OperationalError, f.database_errors)
with mask_modules('cx_Oracle'):
with self.fixup_context(self.app):
pass
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