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# -*- coding: utf-8 -*-
"""
tests.local
~~~~~~~~~~~~~~~~~~~~~~~~
Local and local proxy tests.
:copyright: 2007 Pallets
:license: BSD-3-Clause
"""
import copy
import time
from functools import partial
from threading import Thread
import pytest
from werkzeug import local
def test_basic_local():
ns = local.Local()
ns.foo = 0
values = []
def value_setter(idx):
time.sleep(0.01 * idx)
ns.foo = idx
time.sleep(0.02)
values.append(ns.foo)
threads = [Thread(target=value_setter, args=(x,)) for x in [1, 2, 3]]
for thread in threads:
thread.start()
time.sleep(0.2)
assert sorted(values) == [1, 2, 3]
def delfoo():
del ns.foo
delfoo()
pytest.raises(AttributeError, lambda: ns.foo)
pytest.raises(AttributeError, delfoo)
local.release_local(ns)
def test_local_release():
ns = local.Local()
ns.foo = 42
local.release_local(ns)
assert not hasattr(ns, "foo")
ls = local.LocalStack()
ls.push(42)
local.release_local(ls)
assert ls.top is None
def test_local_proxy():
foo = []
ls = local.LocalProxy(lambda: foo)
ls.append(42)
ls.append(23)
ls[1:] = [1, 2, 3]
assert foo == [42, 1, 2, 3]
assert repr(foo) == repr(ls)
assert foo[0] == 42
foo += [1]
assert list(foo) == [42, 1, 2, 3, 1]
def test_local_proxy_operations_math():
foo = 2
ls = local.LocalProxy(lambda: foo)
assert ls + 1 == 3
assert 1 + ls == 3
assert ls - 1 == 1
assert 1 - ls == -1
assert ls * 1 == 2
assert 1 * ls == 2
assert ls / 1 == 2
assert 1.0 / ls == 0.5
assert ls // 1.0 == 2.0
assert 1.0 // ls == 0.0
assert ls % 2 == 0
assert 2 % ls == 0
def test_local_proxy_operations_strings():
foo = "foo"
ls = local.LocalProxy(lambda: foo)
assert ls + "bar" == "foobar"
assert "bar" + ls == "barfoo"
assert ls * 2 == "foofoo"
foo = "foo %s"
assert ls % ("bar",) == "foo bar"
def test_local_stack():
ident = local.get_ident()
ls = local.LocalStack()
assert ident not in ls._local.__storage__
assert ls.top is None
ls.push(42)
assert ident in ls._local.__storage__
assert ls.top == 42
ls.push(23)
assert ls.top == 23
ls.pop()
assert ls.top == 42
ls.pop()
assert ls.top is None
assert ls.pop() is None
assert ls.pop() is None
proxy = ls()
ls.push([1, 2])
assert proxy == [1, 2]
ls.push((1, 2))
assert proxy == (1, 2)
ls.pop()
ls.pop()
assert repr(proxy) == "<LocalProxy unbound>"
assert ident not in ls._local.__storage__
def test_local_proxies_with_callables():
foo = 42
ls = local.LocalProxy(lambda: foo)
assert ls == 42
foo = [23]
ls.append(42)
assert ls == [23, 42]
assert foo == [23, 42]
def test_custom_idents():
ident = 0
ns = local.Local()
stack = local.LocalStack()
local.LocalManager([ns, stack], ident_func=lambda: ident)
ns.foo = 42
stack.push({"foo": 42})
ident = 1
ns.foo = 23
stack.push({"foo": 23})
ident = 0
assert ns.foo == 42
assert stack.top["foo"] == 42
stack.pop()
assert stack.top is None
ident = 1
assert ns.foo == 23
assert stack.top["foo"] == 23
stack.pop()
assert stack.top is None
def test_deepcopy_on_proxy():
class Foo(object):
attr = 42
def __copy__(self):
return self
def __deepcopy__(self, memo):
return self
f = Foo()
p = local.LocalProxy(lambda: f)
assert p.attr == 42
assert copy.deepcopy(p) is f
assert copy.copy(p) is f
a = []
p2 = local.LocalProxy(lambda: [a])
assert copy.copy(p2) == [a]
assert copy.copy(p2)[0] is a
assert copy.deepcopy(p2) == [a]
assert copy.deepcopy(p2)[0] is not a
def test_local_proxy_wrapped_attribute():
class SomeClassWithWrapped(object):
__wrapped__ = "wrapped"
def lookup_func():
return 42
partial_lookup_func = partial(lookup_func)
proxy = local.LocalProxy(lookup_func)
assert proxy.__wrapped__ is lookup_func
partial_proxy = local.LocalProxy(partial_lookup_func)
assert partial_proxy.__wrapped__ == partial_lookup_func
ns = local.Local()
ns.foo = SomeClassWithWrapped()
ns.bar = 42
assert ns("foo").__wrapped__ == "wrapped"
pytest.raises(AttributeError, lambda: ns("bar").__wrapped__)
|
