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test_loaders.py
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test_loaders.py
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import os
import sys
from celery import task
from celery import loaders
from celery.app import app_or_default
from celery.exceptions import ImproperlyConfigured
from celery.loaders import base
from celery.loaders import default
from celery.loaders.app import AppLoader
from celery.tests.compat import catch_warnings
from celery.tests.utils import unittest
from celery.tests.utils import with_environ, execute_context
class ObjectConfig(object):
FOO = 1
BAR = 2
object_config = ObjectConfig()
dict_config = dict(FOO=10, BAR=20)
class Object(object):
def __init__(self, **kwargs):
for k, v in kwargs.items():
setattr(self, k, v)
class MockMail(object):
class SendmailWarning(UserWarning):
pass
class Message(Object):
pass
class Mailer(Object):
sent = []
raise_on_send = False
def send(self, message):
if self.__class__.raise_on_send:
raise KeyError("foo")
self.sent.append(message)
class DummyLoader(base.BaseLoader):
def read_configuration(self):
return {"foo": "bar", "CELERY_IMPORTS": ("os", "sys")}
@property
def mail(self):
return MockMail()
class TestLoaders(unittest.TestCase):
def test_get_loader_cls(self):
self.assertEqual(loaders.get_loader_cls("default"),
default.Loader)
def test_current_loader(self):
loader1 = loaders.current_loader()
loader2 = loaders.current_loader()
self.assertIs(loader1, loader2)
self.assertIs(loader2, loaders._loader)
def test_load_settings(self):
loader = loaders.current_loader()
loaders._settings = None
settings = loaders.load_settings()
self.assertTrue(loaders._settings)
settings = loaders.load_settings()
self.assertIs(settings, loaders._settings)
self.assertIs(settings, loader.conf)
@with_environ("CELERY_LOADER", "default")
def test_detect_loader_CELERY_LOADER(self):
self.assertIsInstance(loaders.setup_loader(), default.Loader)
class TestLoaderBase(unittest.TestCase):
message_options = {"subject": "Subject",
"body": "Body",
"sender": "x@x.com",
"to": "y@x.com"}
server_options = {"host": "smtp.x.com",
"port": 1234,
"user": "x",
"password": "qwerty",
"timeout": 3}
def setUp(self):
self.loader = DummyLoader()
def test_handlers_pass(self):
self.loader.on_task_init("foo.task", "feedface-cafebabe")
self.loader.on_worker_init()
def test_import_task_module(self):
self.assertEqual(sys, self.loader.import_task_module("sys"))
def test_conf_property(self):
self.assertEqual(self.loader.conf["foo"], "bar")
self.assertEqual(self.loader.__dict__["conf"]["foo"], "bar")
self.assertEqual(self.loader.conf["foo"], "bar")
def test_import_default_modules(self):
self.assertItemsEqual(self.loader.import_default_modules(),
[os, sys, task])
def test_import_from_cwd_custom_imp(self):
def imp(module):
imp.called = True
imp.called = False
self.loader.import_from_cwd("foo", imp=imp)
self.assertTrue(imp.called)
def test_mail_admins_errors(self):
MockMail.Mailer.raise_on_send = True
opts = dict(self.message_options, **self.server_options)
def with_catch_warnings(log):
self.loader.mail_admins(fail_silently=True, **opts)
return log[0].message
warning = execute_context(catch_warnings(record=True),
with_catch_warnings)
self.assertIsInstance(warning, MockMail.SendmailWarning)
self.assertIn("KeyError", warning.args[0])
self.assertRaises(KeyError, self.loader.mail_admins,
fail_silently=False, **opts)
def test_mail_admins(self):
MockMail.Mailer.raise_on_send = False
opts = dict(self.message_options, **self.server_options)
self.loader.mail_admins(**opts)
message = MockMail.Mailer.sent.pop()
self.assertDictContainsSubset(vars(message), self.message_options)
def test_mail_attribute(self):
from celery.utils import mail
loader = base.BaseLoader()
self.assertIs(loader.mail, mail)
def test_cmdline_config_ValueError(self):
self.assertRaises(ValueError, self.loader.cmdline_config_parser,
["broker.port=foobar"])
class TestDefaultLoader(unittest.TestCase):
def test_wanted_module_item(self):
self.assertTrue(default.wanted_module_item("FOO"))
self.assertTrue(default.wanted_module_item("Foo"))
self.assertFalse(default.wanted_module_item("_FOO"))
self.assertFalse(default.wanted_module_item("__FOO"))
self.assertFalse(default.wanted_module_item("foo"))
def test_read_configuration(self):
from types import ModuleType
class ConfigModule(ModuleType):
pass
celeryconfig = ConfigModule("celeryconfig")
celeryconfig.CELERY_IMPORTS = ("os", "sys")
configname = os.environ.get("CELERY_CONFIG_MODULE") or "celeryconfig"
prevconfig = sys.modules[configname]
sys.modules[configname] = celeryconfig
try:
l = default.Loader()
settings = l.read_configuration()
self.assertTupleEqual(settings.CELERY_IMPORTS, ("os", "sys"))
settings = l.read_configuration()
self.assertTupleEqual(settings.CELERY_IMPORTS, ("os", "sys"))
l.on_worker_init()
finally:
sys.modules[configname] = prevconfig
def test_import_from_cwd(self):
l = default.Loader()
old_path = list(sys.path)
try:
sys.path.remove(os.getcwd())
except ValueError:
pass
celery = sys.modules.pop("celery", None)
try:
self.assertTrue(l.import_from_cwd("celery"))
sys.modules.pop("celery", None)
sys.path.insert(0, os.getcwd())
self.assertTrue(l.import_from_cwd("celery"))
finally:
sys.path = old_path
sys.modules["celery"] = celery
def test_unconfigured_settings(self):
context_executed = [False]
class _Loader(default.Loader):
def import_from_cwd(self, name):
raise ImportError(name)
def with_catch_warnings(log):
l = _Loader()
self.assertEqual(l.conf.CELERY_RESULT_BACKEND, "amqp")
context_executed[0] = True
context = catch_warnings(record=True)
execute_context(context, with_catch_warnings)
self.assertTrue(context_executed[0])
class test_AppLoader(unittest.TestCase):
def setUp(self):
self.app = app_or_default()
self.loader = AppLoader(app=self.app)
def test_config_from_envvar(self, key="CELERY_HARNESS_CFG1"):
self.assertFalse(self.loader.config_from_envvar("HDSAJIHWIQHEWQU",
silent=True))
self.assertRaises(ImproperlyConfigured,
self.loader.config_from_envvar, "HDSAJIHWIQHEWQU",
silent=False)
os.environ[key] = __name__ + ".object_config"
self.assertTrue(self.loader.config_from_envvar(key))
self.assertEqual(self.loader.conf["FOO"], 1)
self.assertEqual(self.loader.conf["BAR"], 2)
os.environ[key] = "unknown_asdwqe.asdwqewqe"
self.assertRaises(ImportError,
self.loader.config_from_envvar, key, silent=False)
self.assertFalse(self.loader.config_from_envvar(key, silent=True))
os.environ[key] = __name__ + ".dict_config"
self.assertTrue(self.loader.config_from_envvar(key))
self.assertEqual(self.loader.conf["FOO"], 10)
self.assertEqual(self.loader.conf["BAR"], 20)
def test_on_worker_init(self):
self.loader.conf["CELERY_IMPORTS"] = ("subprocess", )
sys.modules.pop("subprocess", None)
self.loader.on_worker_init()
self.assertIn("subprocess", sys.modules)