287 lines
9.0 KiB
Python
287 lines
9.0 KiB
Python
import pytest
|
|
from pybind11_tests import smart_ptr as m
|
|
from pybind11_tests import ConstructorStats
|
|
|
|
|
|
def test_smart_ptr(capture):
|
|
# Object1
|
|
for i, o in enumerate([m.make_object_1(), m.make_object_2(), m.MyObject1(3)], start=1):
|
|
assert o.getRefCount() == 1
|
|
with capture:
|
|
m.print_object_1(o)
|
|
m.print_object_2(o)
|
|
m.print_object_3(o)
|
|
m.print_object_4(o)
|
|
assert capture == "MyObject1[{i}]\n".format(i=i) * 4
|
|
|
|
for i, o in enumerate([m.make_myobject1_1(), m.make_myobject1_2(), m.MyObject1(6), 7],
|
|
start=4):
|
|
print(o)
|
|
with capture:
|
|
if not isinstance(o, int):
|
|
m.print_object_1(o)
|
|
m.print_object_2(o)
|
|
m.print_object_3(o)
|
|
m.print_object_4(o)
|
|
m.print_myobject1_1(o)
|
|
m.print_myobject1_2(o)
|
|
m.print_myobject1_3(o)
|
|
m.print_myobject1_4(o)
|
|
assert capture == "MyObject1[{i}]\n".format(i=i) * (4 if isinstance(o, int) else 8)
|
|
|
|
cstats = ConstructorStats.get(m.MyObject1)
|
|
assert cstats.alive() == 0
|
|
expected_values = ['MyObject1[{}]'.format(i) for i in range(1, 7)] + ['MyObject1[7]'] * 4
|
|
assert cstats.values() == expected_values
|
|
assert cstats.default_constructions == 0
|
|
assert cstats.copy_constructions == 0
|
|
# assert cstats.move_constructions >= 0 # Doesn't invoke any
|
|
assert cstats.copy_assignments == 0
|
|
assert cstats.move_assignments == 0
|
|
|
|
# Object2
|
|
for i, o in zip([8, 6, 7], [m.MyObject2(8), m.make_myobject2_1(), m.make_myobject2_2()]):
|
|
print(o)
|
|
with capture:
|
|
m.print_myobject2_1(o)
|
|
m.print_myobject2_2(o)
|
|
m.print_myobject2_3(o)
|
|
m.print_myobject2_4(o)
|
|
assert capture == "MyObject2[{i}]\n".format(i=i) * 4
|
|
|
|
cstats = ConstructorStats.get(m.MyObject2)
|
|
assert cstats.alive() == 1
|
|
o = None
|
|
assert cstats.alive() == 0
|
|
assert cstats.values() == ['MyObject2[8]', 'MyObject2[6]', 'MyObject2[7]']
|
|
assert cstats.default_constructions == 0
|
|
assert cstats.copy_constructions == 0
|
|
# assert cstats.move_constructions >= 0 # Doesn't invoke any
|
|
assert cstats.copy_assignments == 0
|
|
assert cstats.move_assignments == 0
|
|
|
|
# Object3
|
|
for i, o in zip([9, 8, 9], [m.MyObject3(9), m.make_myobject3_1(), m.make_myobject3_2()]):
|
|
print(o)
|
|
with capture:
|
|
m.print_myobject3_1(o)
|
|
m.print_myobject3_2(o)
|
|
m.print_myobject3_3(o)
|
|
m.print_myobject3_4(o)
|
|
assert capture == "MyObject3[{i}]\n".format(i=i) * 4
|
|
|
|
cstats = ConstructorStats.get(m.MyObject3)
|
|
assert cstats.alive() == 1
|
|
o = None
|
|
assert cstats.alive() == 0
|
|
assert cstats.values() == ['MyObject3[9]', 'MyObject3[8]', 'MyObject3[9]']
|
|
assert cstats.default_constructions == 0
|
|
assert cstats.copy_constructions == 0
|
|
# assert cstats.move_constructions >= 0 # Doesn't invoke any
|
|
assert cstats.copy_assignments == 0
|
|
assert cstats.move_assignments == 0
|
|
|
|
# Object
|
|
cstats = ConstructorStats.get(m.Object)
|
|
assert cstats.alive() == 0
|
|
assert cstats.values() == []
|
|
assert cstats.default_constructions == 10
|
|
assert cstats.copy_constructions == 0
|
|
# assert cstats.move_constructions >= 0 # Doesn't invoke any
|
|
assert cstats.copy_assignments == 0
|
|
assert cstats.move_assignments == 0
|
|
|
|
# ref<>
|
|
cstats = m.cstats_ref()
|
|
assert cstats.alive() == 0
|
|
assert cstats.values() == ['from pointer'] * 10
|
|
assert cstats.default_constructions == 30
|
|
assert cstats.copy_constructions == 12
|
|
# assert cstats.move_constructions >= 0 # Doesn't invoke any
|
|
assert cstats.copy_assignments == 30
|
|
assert cstats.move_assignments == 0
|
|
|
|
|
|
def test_smart_ptr_refcounting():
|
|
assert m.test_object1_refcounting()
|
|
|
|
|
|
def test_unique_nodelete():
|
|
o = m.MyObject4(23)
|
|
assert o.value == 23
|
|
cstats = ConstructorStats.get(m.MyObject4)
|
|
assert cstats.alive() == 1
|
|
del o
|
|
assert cstats.alive() == 1 # Leak, but that's intentional
|
|
|
|
|
|
def test_unique_nodelete4a():
|
|
o = m.MyObject4a(23)
|
|
assert o.value == 23
|
|
cstats = ConstructorStats.get(m.MyObject4a)
|
|
assert cstats.alive() == 1
|
|
del o
|
|
assert cstats.alive() == 1 # Leak, but that's intentional
|
|
|
|
|
|
def test_unique_deleter():
|
|
o = m.MyObject4b(23)
|
|
assert o.value == 23
|
|
cstats4a = ConstructorStats.get(m.MyObject4a)
|
|
assert cstats4a.alive() == 2 # Two because of previous test
|
|
cstats4b = ConstructorStats.get(m.MyObject4b)
|
|
assert cstats4b.alive() == 1
|
|
del o
|
|
assert cstats4a.alive() == 1 # Should now only be one leftover from previous test
|
|
assert cstats4b.alive() == 0 # Should be deleted
|
|
|
|
|
|
def test_large_holder():
|
|
o = m.MyObject5(5)
|
|
assert o.value == 5
|
|
cstats = ConstructorStats.get(m.MyObject5)
|
|
assert cstats.alive() == 1
|
|
del o
|
|
assert cstats.alive() == 0
|
|
|
|
|
|
def test_shared_ptr_and_references():
|
|
s = m.SharedPtrRef()
|
|
stats = ConstructorStats.get(m.A)
|
|
assert stats.alive() == 2
|
|
|
|
ref = s.ref # init_holder_helper(holder_ptr=false, owned=false)
|
|
assert stats.alive() == 2
|
|
assert s.set_ref(ref)
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
assert s.set_holder(ref)
|
|
assert "Unable to cast from non-held to held instance" in str(excinfo.value)
|
|
|
|
copy = s.copy # init_holder_helper(holder_ptr=false, owned=true)
|
|
assert stats.alive() == 3
|
|
assert s.set_ref(copy)
|
|
assert s.set_holder(copy)
|
|
|
|
holder_ref = s.holder_ref # init_holder_helper(holder_ptr=true, owned=false)
|
|
assert stats.alive() == 3
|
|
assert s.set_ref(holder_ref)
|
|
assert s.set_holder(holder_ref)
|
|
|
|
holder_copy = s.holder_copy # init_holder_helper(holder_ptr=true, owned=true)
|
|
assert stats.alive() == 3
|
|
assert s.set_ref(holder_copy)
|
|
assert s.set_holder(holder_copy)
|
|
|
|
del ref, copy, holder_ref, holder_copy, s
|
|
assert stats.alive() == 0
|
|
|
|
|
|
def test_shared_ptr_from_this_and_references():
|
|
s = m.SharedFromThisRef()
|
|
stats = ConstructorStats.get(m.B)
|
|
assert stats.alive() == 2
|
|
|
|
ref = s.ref # init_holder_helper(holder_ptr=false, owned=false, bad_wp=false)
|
|
assert stats.alive() == 2
|
|
assert s.set_ref(ref)
|
|
assert s.set_holder(ref) # std::enable_shared_from_this can create a holder from a reference
|
|
|
|
bad_wp = s.bad_wp # init_holder_helper(holder_ptr=false, owned=false, bad_wp=true)
|
|
assert stats.alive() == 2
|
|
assert s.set_ref(bad_wp)
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
assert s.set_holder(bad_wp)
|
|
assert "Unable to cast from non-held to held instance" in str(excinfo.value)
|
|
|
|
copy = s.copy # init_holder_helper(holder_ptr=false, owned=true, bad_wp=false)
|
|
assert stats.alive() == 3
|
|
assert s.set_ref(copy)
|
|
assert s.set_holder(copy)
|
|
|
|
holder_ref = s.holder_ref # init_holder_helper(holder_ptr=true, owned=false, bad_wp=false)
|
|
assert stats.alive() == 3
|
|
assert s.set_ref(holder_ref)
|
|
assert s.set_holder(holder_ref)
|
|
|
|
holder_copy = s.holder_copy # init_holder_helper(holder_ptr=true, owned=true, bad_wp=false)
|
|
assert stats.alive() == 3
|
|
assert s.set_ref(holder_copy)
|
|
assert s.set_holder(holder_copy)
|
|
|
|
del ref, bad_wp, copy, holder_ref, holder_copy, s
|
|
assert stats.alive() == 0
|
|
|
|
z = m.SharedFromThisVirt.get()
|
|
y = m.SharedFromThisVirt.get()
|
|
assert y is z
|
|
|
|
|
|
def test_move_only_holder():
|
|
a = m.TypeWithMoveOnlyHolder.make()
|
|
stats = ConstructorStats.get(m.TypeWithMoveOnlyHolder)
|
|
assert stats.alive() == 1
|
|
del a
|
|
assert stats.alive() == 0
|
|
|
|
|
|
def test_holder_with_addressof_operator():
|
|
# this test must not throw exception from c++
|
|
a = m.TypeForHolderWithAddressOf.make()
|
|
a.print_object_1()
|
|
a.print_object_2()
|
|
a.print_object_3()
|
|
a.print_object_4()
|
|
|
|
stats = ConstructorStats.get(m.TypeForHolderWithAddressOf)
|
|
assert stats.alive() == 1
|
|
|
|
np = m.TypeForHolderWithAddressOf.make()
|
|
assert stats.alive() == 2
|
|
del a
|
|
assert stats.alive() == 1
|
|
del np
|
|
assert stats.alive() == 0
|
|
|
|
b = m.TypeForHolderWithAddressOf.make()
|
|
c = b
|
|
assert b.get() is c.get()
|
|
assert stats.alive() == 1
|
|
|
|
del b
|
|
assert stats.alive() == 1
|
|
|
|
del c
|
|
assert stats.alive() == 0
|
|
|
|
|
|
def test_move_only_holder_with_addressof_operator():
|
|
a = m.TypeForMoveOnlyHolderWithAddressOf.make()
|
|
a.print_object()
|
|
|
|
stats = ConstructorStats.get(m.TypeForMoveOnlyHolderWithAddressOf)
|
|
assert stats.alive() == 1
|
|
|
|
a.value = 42
|
|
assert a.value == 42
|
|
|
|
del a
|
|
assert stats.alive() == 0
|
|
|
|
|
|
def test_smart_ptr_from_default():
|
|
instance = m.HeldByDefaultHolder()
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
m.HeldByDefaultHolder.load_shared_ptr(instance)
|
|
assert "Unable to load a custom holder type from a " \
|
|
"default-holder instance" in str(excinfo.value)
|
|
|
|
|
|
def test_shared_ptr_gc():
|
|
"""#187: issue involving std::shared_ptr<> return value policy & garbage collection"""
|
|
el = m.ElementList()
|
|
for i in range(10):
|
|
el.add(m.ElementA(i))
|
|
pytest.gc_collect()
|
|
for i, v in enumerate(el.get()):
|
|
assert i == v.value()
|