/usr/lib/python2.7/dist-packages/celery/tests/utils/test_local.py is in python-celery 3.1.20-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import sys
from celery.five import string, long_t
from celery.local import (
Proxy,
PromiseProxy,
maybe_evaluate,
try_import,
)
from celery.tests.case import Case, Mock
PY3 = sys.version_info[0] == 3
class test_try_import(Case):
def test_imports(self):
self.assertTrue(try_import(__name__))
def test_when_default(self):
default = object()
self.assertIs(try_import('foobar.awqewqe.asdwqewq', default), default)
class test_Proxy(Case):
def test_std_class_attributes(self):
self.assertEqual(Proxy.__name__, 'Proxy')
self.assertEqual(Proxy.__module__, 'celery.local')
self.assertIsInstance(Proxy.__doc__, str)
def test_name(self):
def real():
"""real function"""
return 'REAL'
x = Proxy(lambda: real, name='xyz')
self.assertEqual(x.__name__, 'xyz')
y = Proxy(lambda: real)
self.assertEqual(y.__name__, 'real')
self.assertEqual(x.__doc__, 'real function')
self.assertEqual(x.__class__, type(real))
self.assertEqual(x.__dict__, real.__dict__)
self.assertEqual(repr(x), repr(real))
self.assertTrue(x.__module__)
def test_get_current_local(self):
x = Proxy(lambda: 10)
object.__setattr__(x, '_Proxy_local', Mock())
self.assertTrue(x._get_current_object())
def test_bool(self):
class X(object):
def __bool__(self):
return False
__nonzero__ = __bool__
x = Proxy(lambda: X())
self.assertFalse(x)
def test_slots(self):
class X(object):
__slots__ = ()
x = Proxy(X)
with self.assertRaises(AttributeError):
x.__dict__
def test_unicode(self):
class X(object):
def __unicode__(self):
return 'UNICODE'
__str__ = __unicode__
def __repr__(self):
return 'REPR'
x = Proxy(lambda: X())
self.assertEqual(string(x), 'UNICODE')
del(X.__unicode__)
del(X.__str__)
self.assertEqual(string(x), 'REPR')
def test_dir(self):
class X(object):
def __dir__(self):
return ['a', 'b', 'c']
x = Proxy(lambda: X())
self.assertListEqual(dir(x), ['a', 'b', 'c'])
class Y(object):
def __dir__(self):
raise RuntimeError()
y = Proxy(lambda: Y())
self.assertListEqual(dir(y), [])
def test_getsetdel_attr(self):
class X(object):
a = 1
b = 2
c = 3
def __dir__(self):
return ['a', 'b', 'c']
v = X()
x = Proxy(lambda: v)
self.assertListEqual(x.__members__, ['a', 'b', 'c'])
self.assertEqual(x.a, 1)
self.assertEqual(x.b, 2)
self.assertEqual(x.c, 3)
setattr(x, 'a', 10)
self.assertEqual(x.a, 10)
del(x.a)
self.assertEqual(x.a, 1)
def test_dictproxy(self):
v = {}
x = Proxy(lambda: v)
x['foo'] = 42
self.assertEqual(x['foo'], 42)
self.assertEqual(len(x), 1)
self.assertIn('foo', x)
del(x['foo'])
with self.assertRaises(KeyError):
x['foo']
self.assertTrue(iter(x))
def test_listproxy(self):
v = []
x = Proxy(lambda: v)
x.append(1)
x.extend([2, 3, 4])
self.assertEqual(x[0], 1)
self.assertEqual(x[:-1], [1, 2, 3])
del(x[-1])
self.assertEqual(x[:-1], [1, 2])
x[0] = 10
self.assertEqual(x[0], 10)
self.assertIn(10, x)
self.assertEqual(len(x), 3)
self.assertTrue(iter(x))
x[0:2] = [1, 2]
del(x[0:2])
self.assertTrue(str(x))
if sys.version_info[0] < 3:
self.assertEqual(x.__cmp__(object()), -1)
def test_complex_cast(self):
class O(object):
def __complex__(self):
return complex(10.333)
o = Proxy(O)
self.assertEqual(o.__complex__(), complex(10.333))
def test_index(self):
class O(object):
def __index__(self):
return 1
o = Proxy(O)
self.assertEqual(o.__index__(), 1)
def test_coerce(self):
class O(object):
def __coerce__(self, other):
return self, other
o = Proxy(O)
self.assertTrue(o.__coerce__(3))
def test_int(self):
self.assertEqual(Proxy(lambda: 10) + 1, Proxy(lambda: 11))
self.assertEqual(Proxy(lambda: 10) - 1, Proxy(lambda: 9))
self.assertEqual(Proxy(lambda: 10) * 2, Proxy(lambda: 20))
self.assertEqual(Proxy(lambda: 10) ** 2, Proxy(lambda: 100))
self.assertEqual(Proxy(lambda: 20) / 2, Proxy(lambda: 10))
self.assertEqual(Proxy(lambda: 20) // 2, Proxy(lambda: 10))
self.assertEqual(Proxy(lambda: 11) % 2, Proxy(lambda: 1))
self.assertEqual(Proxy(lambda: 10) << 2, Proxy(lambda: 40))
self.assertEqual(Proxy(lambda: 10) >> 2, Proxy(lambda: 2))
self.assertEqual(Proxy(lambda: 10) ^ 7, Proxy(lambda: 13))
self.assertEqual(Proxy(lambda: 10) | 40, Proxy(lambda: 42))
self.assertEqual(~Proxy(lambda: 10), Proxy(lambda: -11))
self.assertEqual(-Proxy(lambda: 10), Proxy(lambda: -10))
self.assertEqual(+Proxy(lambda: -10), Proxy(lambda: -10))
self.assertTrue(Proxy(lambda: 10) < Proxy(lambda: 20))
self.assertTrue(Proxy(lambda: 20) > Proxy(lambda: 10))
self.assertTrue(Proxy(lambda: 10) >= Proxy(lambda: 10))
self.assertTrue(Proxy(lambda: 10) <= Proxy(lambda: 10))
self.assertTrue(Proxy(lambda: 10) == Proxy(lambda: 10))
self.assertTrue(Proxy(lambda: 20) != Proxy(lambda: 10))
self.assertTrue(Proxy(lambda: 100).__divmod__(30))
self.assertTrue(Proxy(lambda: 100).__truediv__(30))
self.assertTrue(abs(Proxy(lambda: -100)))
x = Proxy(lambda: 10)
x -= 1
self.assertEqual(x, 9)
x = Proxy(lambda: 9)
x += 1
self.assertEqual(x, 10)
x = Proxy(lambda: 10)
x *= 2
self.assertEqual(x, 20)
x = Proxy(lambda: 20)
x /= 2
self.assertEqual(x, 10)
x = Proxy(lambda: 10)
x %= 2
self.assertEqual(x, 0)
x = Proxy(lambda: 10)
x <<= 3
self.assertEqual(x, 80)
x = Proxy(lambda: 80)
x >>= 4
self.assertEqual(x, 5)
x = Proxy(lambda: 5)
x ^= 1
self.assertEqual(x, 4)
x = Proxy(lambda: 4)
x **= 4
self.assertEqual(x, 256)
x = Proxy(lambda: 256)
x //= 2
self.assertEqual(x, 128)
x = Proxy(lambda: 128)
x |= 2
self.assertEqual(x, 130)
x = Proxy(lambda: 130)
x &= 10
self.assertEqual(x, 2)
x = Proxy(lambda: 10)
self.assertEqual(type(x.__float__()), float)
self.assertEqual(type(x.__int__()), int)
if not PY3:
self.assertEqual(type(x.__long__()), long_t)
self.assertTrue(hex(x))
self.assertTrue(oct(x))
def test_hash(self):
class X(object):
def __hash__(self):
return 1234
self.assertEqual(hash(Proxy(lambda: X())), 1234)
def test_call(self):
class X(object):
def __call__(self):
return 1234
self.assertEqual(Proxy(lambda: X())(), 1234)
def test_context(self):
class X(object):
entered = exited = False
def __enter__(self):
self.entered = True
return 1234
def __exit__(self, *exc_info):
self.exited = True
v = X()
x = Proxy(lambda: v)
with x as val:
self.assertEqual(val, 1234)
self.assertTrue(x.entered)
self.assertTrue(x.exited)
def test_reduce(self):
class X(object):
def __reduce__(self):
return 123
x = Proxy(lambda: X())
self.assertEqual(x.__reduce__(), 123)
class test_PromiseProxy(Case):
def test_only_evaluated_once(self):
class X(object):
attr = 123
evals = 0
def __init__(self):
self.__class__.evals += 1
p = PromiseProxy(X)
self.assertEqual(p.attr, 123)
self.assertEqual(p.attr, 123)
self.assertEqual(X.evals, 1)
def test_callbacks(self):
source = Mock(name='source')
p = PromiseProxy(source)
cbA = Mock(name='cbA')
cbB = Mock(name='cbB')
cbC = Mock(name='cbC')
p.__then__(cbA, p)
p.__then__(cbB, p)
self.assertFalse(p.__evaluated__())
self.assertTrue(object.__getattribute__(p, '__pending__'))
self.assertTrue(repr(p))
self.assertTrue(p.__evaluated__())
with self.assertRaises(AttributeError):
object.__getattribute__(p, '__pending__')
cbA.assert_called_with(p)
cbB.assert_called_with(p)
self.assertTrue(p.__evaluated__())
p.__then__(cbC, p)
cbC.assert_called_with(p)
with self.assertRaises(AttributeError):
object.__getattribute__(p, '__pending__')
def test_maybe_evaluate(self):
x = PromiseProxy(lambda: 30)
self.assertFalse(x.__evaluated__())
self.assertEqual(maybe_evaluate(x), 30)
self.assertEqual(maybe_evaluate(x), 30)
self.assertEqual(maybe_evaluate(30), 30)
self.assertTrue(x.__evaluated__())
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