def test_assert_deallocated():
# Ordinary use
class C(object):
def __init__(self, arg0, arg1, name='myname'):
self.name = name
for gc_current in (True, False):
with gc_state(gc_current):
# We are deleting from with-block context, so that's OK
with assert_deallocated(C, 0, 2, 'another name') as c:
assert_equal(c.name, 'another name')
del c
# Or not using the thing in with-block context, also OK
with assert_deallocated(C, 0, 2, name='third name'):
pass
assert_equal(gc.isenabled(), gc_current)
def test_assert_deallocated():
# Ordinary use
class C(object):
def __init__(self, arg0, arg1, name='myname'):
self.name = name
for gc_current in (True, False):
with gc_state(gc_current):
# We are deleting from with-block context, so that's OK
with assert_deallocated(C, 0, 2, 'another name') as c:
assert_equal(c.name, 'another name')
del c
# Or not using the thing in with-block context, also OK
with assert_deallocated(C, 0, 2, name='third name'):
pass
assert_equal(gc.isenabled(), gc_current)
def test_assert_deallocated_nodel():
class C(object):
pass
with pytest.raises(ReferenceError):
# Need to delete after using if in with-block context
with assert_deallocated(C) as c:
pass
def test_assert_deallocated_nodel():
class C(object):
pass
# Need to delete after using if in with-block context
with assert_deallocated(C) as c:
pass
def test_assert_deallocated_nodel():
class C(object):
pass
with pytest.raises(ReferenceError):
# Need to delete after using if in with-block context
with assert_deallocated(C) as c:
pass
def test_assert_deallocated_circular2():
class C(object):
def __init__(self):
self._circular = self
# Still circular reference, no automatic garbage collection
with assert_deallocated(C):
pass
def test_assert_deallocated_nodel():
class C(object):
pass
# Need to delete after using if in with-block context
with assert_deallocated(C) as c:
pass
def test_assert_deallocated_circular():
class C(object):
def __init__(self):
self._circular = self
with pytest.raises(ReferenceError):
# Circular reference, no automatic garbage collection
with assert_deallocated(C) as c:
del c
def test_assert_deallocated_circular2():
class C(object):
def __init__(self):
self._circular = self
# Still circular reference, no automatic garbage collection
with assert_deallocated(C):
pass
def test_assert_deallocated_circular():
class C(object):
def __init__(self):
self._circular = self
with pytest.raises(ReferenceError):
# Circular reference, no automatic garbage collection
with assert_deallocated(C) as c:
del c
def test_assert_deallocated_circular2():
class C:
def __init__(self):
self._circular = self
with pytest.raises(ReferenceError):
# Still circular reference, no automatic garbage collection
with assert_deallocated(C):
pass
def test_linearoperator_deallocation():
# Check that the linear operators used by the Arpack wrappers are
# deallocatable by reference counting -- they are big objects, so
# Python's cyclic GC may not collect them fast enough before
# running out of memory if eigs/eigsh are called in a tight loop.
M_d = np.eye(10)
M_s = csc_matrix(M_d)
M_o = aslinearoperator(M_d)
with assert_deallocated(lambda: arpack.SpLuInv(M_s)):
pass
with assert_deallocated(lambda: arpack.LuInv(M_d)):
pass
with assert_deallocated(lambda: arpack.IterInv(M_s)):
pass
with assert_deallocated(lambda: arpack.IterOpInv(M_o, None, 0.3)):
pass
with assert_deallocated(lambda: arpack.IterOpInv(M_o, M_o, 0.3)):
pass
def test_linearoperator_deallocation():
# Check that the linear operators used by the Arpack wrappers are
# deallocatable by reference counting -- they are big objects, so
# Python's cyclic GC may not collect them fast enough before
# running out of memory if eigs/eigsh are called in a tight loop.
M_d = np.eye(10)
M_s = csc_matrix(M_d)
M_o = aslinearoperator(M_d)
with assert_deallocated(lambda: arpack.SpLuInv(M_s)):
pass
with assert_deallocated(lambda: arpack.LuInv(M_d)):
pass
with assert_deallocated(lambda: arpack.IterInv(M_s)):
pass
with assert_deallocated(lambda: arpack.IterOpInv(M_o, None, 0.3)):
pass
with assert_deallocated(lambda: arpack.IterOpInv(M_o, M_o, 0.3)):
pass
def test_assert_deallocated_nodel():
class C:
pass
with pytest.raises(ReferenceError):
# Need to delete after using if in with-block context
# Note: assert_deallocated(C) needs to be assigned for the test
# to function correctly. It is assigned to c, but c itself is
# not referenced in the body of the with, it is only there for
# the refcount.
with assert_deallocated(C) as c:
pass
