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|
import sys
from importlib.util import find_spec
from unittest.mock import Mock
import pytest
from celery.local import PromiseProxy, Proxy, maybe_evaluate, try_import
class test_try_import:
def test_imports(self):
assert try_import(__name__)
def test_when_default(self):
default = object()
assert try_import('foobar.awqewqe.asdwqewq', default) is default
class test_Proxy:
def test_std_class_attributes(self):
assert Proxy.__name__ == 'Proxy'
assert Proxy.__module__ == 'celery.local'
assert isinstance(Proxy.__doc__, str)
def test_doc(self):
def real():
pass
x = Proxy(real, __doc__='foo')
assert x.__doc__ == 'foo'
def test_name(self):
def real():
"""real function"""
return 'REAL'
x = Proxy(lambda: real, name='xyz')
assert x.__name__ == 'xyz'
y = Proxy(lambda: real)
assert y.__name__ == 'real'
assert x.__doc__ == 'real function'
assert x.__class__ == type(real)
assert x.__dict__ == real.__dict__
assert repr(x) == repr(real)
assert x.__module__
def test_get_current_local(self):
x = Proxy(lambda: 10)
object.__setattr__(x, '_Proxy_local', Mock())
assert x._get_current_object()
def test_bool(self):
class X:
def __bool__(self):
return False
__nonzero__ = __bool__
x = Proxy(lambda: X())
assert not x
def test_slots(self):
class X:
__slots__ = ()
x = Proxy(X)
with pytest.raises(AttributeError):
x.__dict__
def test_dir(self):
class X:
def __dir__(self):
return ['a', 'b', 'c']
x = Proxy(lambda: X())
assert dir(x) == ['a', 'b', 'c']
class Y:
def __dir__(self):
raise RuntimeError()
y = Proxy(lambda: Y())
assert dir(y) == []
def test_getsetdel_attr(self):
class X:
a = 1
b = 2
c = 3
def __dir__(self):
return ['a', 'b', 'c']
v = X()
x = Proxy(lambda: v)
assert x.__members__ == ['a', 'b', 'c']
assert x.a == 1
assert x.b == 2
assert x.c == 3
setattr(x, 'a', 10)
assert x.a == 10
del (x.a)
assert x.a == 1
def test_dictproxy(self):
v = {}
x = Proxy(lambda: v)
x['foo'] = 42
assert x['foo'] == 42
assert len(x) == 1
assert 'foo' in x
del (x['foo'])
with pytest.raises(KeyError):
x['foo']
assert iter(x)
def test_listproxy(self):
v = []
x = Proxy(lambda: v)
x.append(1)
x.extend([2, 3, 4])
assert x[0] == 1
assert x[:-1] == [1, 2, 3]
del (x[-1])
assert x[:-1] == [1, 2]
x[0] = 10
assert x[0] == 10
assert 10 in x
assert len(x) == 3
assert iter(x)
x[0:2] = [1, 2]
del (x[0:2])
assert str(x)
def test_complex_cast(self):
class O:
def __complex__(self):
return complex(10.333)
o = Proxy(O)
assert o.__complex__() == complex(10.333)
def test_index(self):
class O:
def __index__(self):
return 1
o = Proxy(O)
assert o.__index__() == 1
def test_coerce(self):
class O:
def __coerce__(self, other):
return self, other
o = Proxy(O)
assert o.__coerce__(3)
def test_int(self):
assert Proxy(lambda: 10) + 1 == Proxy(lambda: 11)
assert Proxy(lambda: 10) - 1 == Proxy(lambda: 9)
assert Proxy(lambda: 10) * 2 == Proxy(lambda: 20)
assert Proxy(lambda: 10) ** 2 == Proxy(lambda: 100)
assert Proxy(lambda: 20) / 2 == Proxy(lambda: 10)
assert Proxy(lambda: 20) // 2 == Proxy(lambda: 10)
assert Proxy(lambda: 11) % 2 == Proxy(lambda: 1)
assert Proxy(lambda: 10) << 2 == Proxy(lambda: 40)
assert Proxy(lambda: 10) >> 2 == Proxy(lambda: 2)
assert Proxy(lambda: 10) ^ 7 == Proxy(lambda: 13)
assert Proxy(lambda: 10) | 40 == Proxy(lambda: 42)
assert Proxy(lambda: 10) != Proxy(lambda: -11)
assert Proxy(lambda: 10) != Proxy(lambda: -10)
assert Proxy(lambda: -10) == Proxy(lambda: -10)
assert Proxy(lambda: 10) < Proxy(lambda: 20)
assert Proxy(lambda: 20) > Proxy(lambda: 10)
assert Proxy(lambda: 10) >= Proxy(lambda: 10)
assert Proxy(lambda: 10) <= Proxy(lambda: 10)
assert Proxy(lambda: 10) == Proxy(lambda: 10)
assert Proxy(lambda: 20) != Proxy(lambda: 10)
assert Proxy(lambda: 100).__divmod__(30)
assert Proxy(lambda: 100).__truediv__(30)
assert abs(Proxy(lambda: -100))
x = Proxy(lambda: 10)
x -= 1
assert x == 9
x = Proxy(lambda: 9)
x += 1
assert x == 10
x = Proxy(lambda: 10)
x *= 2
assert x == 20
x = Proxy(lambda: 20)
x /= 2
assert x == 10
x = Proxy(lambda: 10)
x %= 2
assert x == 0
x = Proxy(lambda: 10)
x <<= 3
assert x == 80
x = Proxy(lambda: 80)
x >>= 4
assert x == 5
x = Proxy(lambda: 5)
x ^= 1
assert x == 4
x = Proxy(lambda: 4)
x **= 4
assert x == 256
x = Proxy(lambda: 256)
x //= 2
assert x == 128
x = Proxy(lambda: 128)
x |= 2
assert x == 130
x = Proxy(lambda: 130)
x &= 10
assert x == 2
x = Proxy(lambda: 10)
assert type(x.__float__()) == float
assert type(x.__int__()) == int
assert hex(x)
assert oct(x)
def test_hash(self):
class X:
def __hash__(self):
return 1234
assert hash(Proxy(lambda: X())) == 1234
def test_call(self):
class X:
def __call__(self):
return 1234
assert Proxy(lambda: X())() == 1234
def test_context(self):
class X:
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:
assert val == 1234
assert x.entered
assert x.exited
def test_reduce(self):
class X:
def __reduce__(self):
return 123
x = Proxy(lambda: X())
assert x.__reduce__() == 123
class test_PromiseProxy:
def test_only_evaluated_once(self):
class X:
attr = 123
evals = 0
def __init__(self):
self.__class__.evals += 1
p = PromiseProxy(X)
assert p.attr == 123
assert p.attr == 123
assert 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)
assert not p.__evaluated__()
assert object.__getattribute__(p, '__pending__')
assert repr(p)
assert p.__evaluated__()
with pytest.raises(AttributeError):
object.__getattribute__(p, '__pending__')
cbA.assert_called_with(p)
cbB.assert_called_with(p)
assert p.__evaluated__()
p.__then__(cbC, p)
cbC.assert_called_with(p)
with pytest.raises(AttributeError):
object.__getattribute__(p, '__pending__')
def test_maybe_evaluate(self):
x = PromiseProxy(lambda: 30)
assert not x.__evaluated__()
assert maybe_evaluate(x) == 30
assert maybe_evaluate(x) == 30
assert maybe_evaluate(30) == 30
assert x.__evaluated__()
class test_celery_import:
def test_import_celery(self, monkeypatch):
monkeypatch.delitem(sys.modules, "celery", raising=False)
spec = find_spec("celery")
assert spec
import celery
assert celery.__spec__ == spec
assert find_spec("celery") == spec
|
