99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
""" Test for assert_deallocated context manager and gc utilities
|
|
"""
|
|
from __future__ import division, print_function, absolute_import
|
|
|
|
import gc
|
|
|
|
from scipy._lib._gcutils import (set_gc_state, gc_state, assert_deallocated,
|
|
ReferenceError, IS_PYPY)
|
|
|
|
from numpy.testing import assert_equal
|
|
|
|
import pytest
|
|
|
|
|
|
def test_set_gc_state():
|
|
gc_status = gc.isenabled()
|
|
try:
|
|
for state in (True, False):
|
|
gc.enable()
|
|
set_gc_state(state)
|
|
assert_equal(gc.isenabled(), state)
|
|
gc.disable()
|
|
set_gc_state(state)
|
|
assert_equal(gc.isenabled(), state)
|
|
finally:
|
|
if gc_status:
|
|
gc.enable()
|
|
|
|
|
|
def test_gc_state():
|
|
# Test gc_state context manager
|
|
gc_status = gc.isenabled()
|
|
try:
|
|
for pre_state in (True, False):
|
|
set_gc_state(pre_state)
|
|
for with_state in (True, False):
|
|
# Check the gc state is with_state in with block
|
|
with gc_state(with_state):
|
|
assert_equal(gc.isenabled(), with_state)
|
|
# And returns to previous state outside block
|
|
assert_equal(gc.isenabled(), pre_state)
|
|
# Even if the gc state is set explicitly within the block
|
|
with gc_state(with_state):
|
|
assert_equal(gc.isenabled(), with_state)
|
|
set_gc_state(not with_state)
|
|
assert_equal(gc.isenabled(), pre_state)
|
|
finally:
|
|
if gc_status:
|
|
gc.enable()
|
|
|
|
|
|
@pytest.mark.skipif(IS_PYPY, reason="Test not meaningful on PyPy")
|
|
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)
|
|
|
|
|
|
@pytest.mark.skipif(IS_PYPY, reason="Test not meaningful on PyPy")
|
|
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
|
|
|
|
|
|
@pytest.mark.skipif(IS_PYPY, reason="Test not meaningful on PyPy")
|
|
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
|
|
|
|
|
|
@pytest.mark.skipif(IS_PYPY, reason="Test not meaningful on PyPy")
|
|
def test_assert_deallocated_circular2():
|
|
class C(object):
|
|
def __init__(self):
|
|
self._circular = self
|
|
with pytest.raises(ReferenceError):
|
|
# Still circular reference, no automatic garbage collection
|
|
with assert_deallocated(C):
|
|
pass
|