def test_print_cache(capfd):
clear_cache()
_identity(x)
info = _identity.cache_info()
print_cache()
resout, _ = capfd.readouterr()
assert resout.find('_identity ' + str(info)) >= 0
def test_print_cache(capfd):
clear_cache()
_identity(x)
info = _identity.cache_info()
print_cache()
resout, _ = capfd.readouterr()
assert resout.find('_identity ' + str(info)) >= 0
def test_sympyissue_8825():
t1, t2 = symbols('t1:3')
d = weakref.WeakKeyDictionary([(t1, 1), (t2, 2)])
assert sstr(list(ordered(d.items()))) == '[(t1, 1), (t2, 2)]'
del t1
clear_cache()
gc.collect()
assert sstr(list(ordered(d.items()))) == '[(t2, 2)]'
def test_sympyissue_8825():
import weakref
a, b = symbols('a b')
d = weakref.WeakKeyDictionary([(a, 1), (b, 2)])
assert sstr(list(ordered(d.items()))) == '[(a, 1), (b, 2)]'
del a
clear_cache()
assert sstr(list(ordered(d.items()))) == '[(b, 2)]'
def test_sympyissue_8825():
t1, t2 = symbols('t1:3')
d = weakref.WeakKeyDictionary([(t1, 1), (t2, 2)])
assert sstr(list(ordered(d.items()))) == '[(t1, 1), (t2, 2)]'
del t1
clear_cache()
gc.collect()
assert sstr(list(ordered(d.items()))) == '[(t2, 2)]'
def test_pow_eval_subs_no_cache():
s = 1 / sqrt(x**2)
# This bug only appeared when the cache was turned off.
clear_cache()
# This used to fail with a wrong result.
# It incorrectly returned 1/sqrt(x**2) before.
result = s.subs({sqrt(x**2): y})
assert result == 1 / y
def test_sympyissue_7688():
f = Function('f') # actually an UndefinedFunction
clear_cache()
class A(UndefinedFunction):
pass
a = A('f')
assert isinstance(a, type(f))
def test_sympyissue_7687():
f = Function('f')(x)
ff = Function('f')(x)
match_with_cache = f.match(ff)
assert isinstance(f, type(ff))
clear_cache()
ff = Function('f')(x)
assert isinstance(f, type(ff))
assert match_with_cache == f.match(ff)
def test_pow_eval_subs_no_cache():
s = 1/sqrt(x**2)
# This bug only appeared when the cache was turned off.
clear_cache()
# This used to fail with a wrong result.
# It incorrectly returned 1/sqrt(x**2) before.
result = s.subs({sqrt(x**2): y})
assert result == 1/y
def test_sympyissue_7688():
f = Function('f') # actually an UndefinedFunction
clear_cache()
class A(UndefinedFunction):
pass
a = A('f')
assert isinstance(a, type(f))
def test_sympyissue_7687():
f = Function('f')(x)
ff = Function('f')(x)
match_with_cache = f.match(ff)
assert isinstance(f, type(ff))
clear_cache()
ff = Function('f')(x)
assert isinstance(f, type(ff))
assert match_with_cache == f.match(ff)
def test_sympyissue_7688():
from diofant.core.function import Function, UndefinedFunction
f = Function('f') # actually an UndefinedFunction
clear_cache()
class A(UndefinedFunction):
pass
a = A('f')
assert isinstance(a, type(f))
def test_sympyissue_7687():
from diofant.core.function import Function
from diofant.abc import x
f = Function('f')(x)
ff = Function('f')(x)
match_with_cache = ff.matches(f)
assert isinstance(f, type(ff))
clear_cache()
ff = Function('f')(x)
assert isinstance(f, type(ff))
assert match_with_cache == ff.matches(f)
def test_print_cache(capfd):
clear_cache()
wrapped = _identity.__wrapped__
_identity(x)
item = str(wrapped)
head = '='*len(item)
res = (head + "\n" + item + "\n" + head + "\n" +
" ((Symbol('x'), <class 'diofant.core.symbol.Symbol'>), (True,)) : x\n")
print_cache()
resout, _ = capfd.readouterr()
assert resout == res
assert dict(CACHE)[wrapped] == {((x, Symbol), (True,)): x}
def file_clear_cache():
clear_cache()
