knx/examples/knxPython/pybind11/tests/test_call_policies.py
2019-12-12 21:42:51 +01:00

217 lines
6.5 KiB
Python

import pytest
from pybind11_tests import call_policies as m
from pybind11_tests import ConstructorStats, UserType
def test_keep_alive_argument(capture):
n_inst = ConstructorStats.detail_reg_inst()
with capture:
p = m.Parent()
assert capture == "Allocating parent."
with capture:
p.addChild(m.Child())
assert ConstructorStats.detail_reg_inst() == n_inst + 1
assert capture == """
Allocating child.
Releasing child.
"""
with capture:
del p
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == "Releasing parent."
with capture:
p = m.Parent()
assert capture == "Allocating parent."
with capture:
p.addChildKeepAlive(m.Child())
assert ConstructorStats.detail_reg_inst() == n_inst + 2
assert capture == "Allocating child."
with capture:
del p
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == """
Releasing parent.
Releasing child.
"""
def test_keep_alive_return_value(capture):
n_inst = ConstructorStats.detail_reg_inst()
with capture:
p = m.Parent()
assert capture == "Allocating parent."
with capture:
p.returnChild()
assert ConstructorStats.detail_reg_inst() == n_inst + 1
assert capture == """
Allocating child.
Releasing child.
"""
with capture:
del p
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == "Releasing parent."
with capture:
p = m.Parent()
assert capture == "Allocating parent."
with capture:
p.returnChildKeepAlive()
assert ConstructorStats.detail_reg_inst() == n_inst + 2
assert capture == "Allocating child."
with capture:
del p
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == """
Releasing parent.
Releasing child.
"""
def test_keep_alive_single():
"""Issue #1251 - patients are stored multiple times when given to the same nurse"""
nurse, p1, p2 = UserType(), UserType(), UserType()
b = m.refcount(nurse)
assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b, b]
m.add_patient(nurse, p1)
assert m.get_patients(nurse) == [p1, ]
assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b]
m.add_patient(nurse, p1)
assert m.get_patients(nurse) == [p1, ]
assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b]
m.add_patient(nurse, p1)
assert m.get_patients(nurse) == [p1, ]
assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b]
m.add_patient(nurse, p2)
assert m.get_patients(nurse) == [p1, p2]
assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b + 1]
m.add_patient(nurse, p2)
assert m.get_patients(nurse) == [p1, p2]
assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b + 1]
m.add_patient(nurse, p2)
m.add_patient(nurse, p1)
assert m.get_patients(nurse) == [p1, p2]
assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b + 1]
del nurse
assert [m.refcount(p1), m.refcount(p2)] == [b, b]
# https://bitbucket.org/pypy/pypy/issues/2447
@pytest.unsupported_on_pypy
def test_alive_gc(capture):
n_inst = ConstructorStats.detail_reg_inst()
p = m.ParentGC()
p.addChildKeepAlive(m.Child())
assert ConstructorStats.detail_reg_inst() == n_inst + 2
lst = [p]
lst.append(lst) # creates a circular reference
with capture:
del p, lst
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == """
Releasing parent.
Releasing child.
"""
def test_alive_gc_derived(capture):
class Derived(m.Parent):
pass
n_inst = ConstructorStats.detail_reg_inst()
p = Derived()
p.addChildKeepAlive(m.Child())
assert ConstructorStats.detail_reg_inst() == n_inst + 2
lst = [p]
lst.append(lst) # creates a circular reference
with capture:
del p, lst
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == """
Releasing parent.
Releasing child.
"""
def test_alive_gc_multi_derived(capture):
class Derived(m.Parent, m.Child):
def __init__(self):
m.Parent.__init__(self)
m.Child.__init__(self)
n_inst = ConstructorStats.detail_reg_inst()
p = Derived()
p.addChildKeepAlive(m.Child())
# +3 rather than +2 because Derived corresponds to two registered instances
assert ConstructorStats.detail_reg_inst() == n_inst + 3
lst = [p]
lst.append(lst) # creates a circular reference
with capture:
del p, lst
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == """
Releasing parent.
Releasing child.
Releasing child.
"""
def test_return_none(capture):
n_inst = ConstructorStats.detail_reg_inst()
with capture:
p = m.Parent()
assert capture == "Allocating parent."
with capture:
p.returnNullChildKeepAliveChild()
assert ConstructorStats.detail_reg_inst() == n_inst + 1
assert capture == ""
with capture:
del p
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == "Releasing parent."
with capture:
p = m.Parent()
assert capture == "Allocating parent."
with capture:
p.returnNullChildKeepAliveParent()
assert ConstructorStats.detail_reg_inst() == n_inst + 1
assert capture == ""
with capture:
del p
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == "Releasing parent."
def test_keep_alive_constructor(capture):
n_inst = ConstructorStats.detail_reg_inst()
with capture:
p = m.Parent(m.Child())
assert ConstructorStats.detail_reg_inst() == n_inst + 2
assert capture == """
Allocating child.
Allocating parent.
"""
with capture:
del p
assert ConstructorStats.detail_reg_inst() == n_inst
assert capture == """
Releasing parent.
Releasing child.
"""
def test_call_guard():
assert m.unguarded_call() == "unguarded"
assert m.guarded_call() == "guarded"
assert m.multiple_guards_correct_order() == "guarded & guarded"
assert m.multiple_guards_wrong_order() == "unguarded & guarded"
if hasattr(m, "with_gil"):
assert m.with_gil() == "GIL held"
assert m.without_gil() == "GIL released"