pybind11/tests/test_class_sh_disowning_mi.py

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import pytest
import env # noqa: F401
from pybind11_tests import class_sh_disowning_mi as m
def test_diamond_inheritance():
# Very similar to test_multiple_inheritance.py:test_diamond_inheritance.
d = m.D()
assert d is d.d()
assert d is d.c0()
assert d is d.c1()
assert d is d.b()
assert d is d.c0().b()
assert d is d.c1().b()
assert d is d.c0().c1().b().c0().b()
def is_disowned(callable_method):
try:
callable_method()
except ValueError as e:
assert (
str(e)
== "Missing value for wrapped C++ type: Python instance was disowned."
)
return True
return False
def test_disown_b():
b = m.B()
assert b.get() == 10
m.disown_b(b)
assert is_disowned(b.get)
@pytest.mark.parametrize("var_to_disown", ["c0", "b"])
def test_disown_c0(var_to_disown):
c0 = m.C0()
assert c0.get() == 1020
b = c0.b()
m.disown_b(locals()[var_to_disown])
assert is_disowned(c0.get)
assert is_disowned(b.get)
@pytest.mark.parametrize("var_to_disown", ["c1", "b"])
def test_disown_c1(var_to_disown):
c1 = m.C1()
assert c1.get() == 1021
b = c1.b()
m.disown_b(locals()[var_to_disown])
assert is_disowned(c1.get)
assert is_disowned(b.get)
@pytest.mark.parametrize("var_to_disown", ["d", "c1", "c0", "b"])
def test_disown_d(var_to_disown):
d = m.D()
assert d.get() == 10202130
b = d.b()
c0 = d.c0()
c1 = d.c1()
m.disown_b(locals()[var_to_disown])
assert is_disowned(d.get)
assert is_disowned(c1.get)
assert is_disowned(c0.get)
assert is_disowned(b.get)
# Based on test_multiple_inheritance.py:test_multiple_inheritance_python.
class MI1(m.Base1, m.Base2):
def __init__(self, i, j):
m.Base1.__init__(self, i)
m.Base2.__init__(self, j)
class B1:
def v(self):
return 1
class MI2(B1, m.Base1, m.Base2):
def __init__(self, i, j):
B1.__init__(self)
m.Base1.__init__(self, i)
m.Base2.__init__(self, j)
class MI3(MI2):
def __init__(self, i, j):
MI2.__init__(self, i, j)
class MI4(MI3, m.Base2):
def __init__(self, i, j):
MI3.__init__(self, i, j)
# This should be ignored (Base2 is already initialized via MI2):
m.Base2.__init__(self, i + 100)
class MI5(m.Base2, B1, m.Base1):
def __init__(self, i, j):
B1.__init__(self)
m.Base1.__init__(self, i)
m.Base2.__init__(self, j)
class MI6(m.Base2, B1):
def __init__(self, i):
m.Base2.__init__(self, i)
B1.__init__(self)
class B2(B1):
def v(self):
return 2
class B3:
def v(self):
return 3
class B4(B3, B2):
def v(self):
return 4
class MI7(B4, MI6):
def __init__(self, i):
B4.__init__(self)
MI6.__init__(self, i)
class MI8(MI6, B3):
def __init__(self, i):
MI6.__init__(self, i)
B3.__init__(self)
class MI8b(B3, MI6):
def __init__(self, i):
B3.__init__(self)
MI6.__init__(self, i)
@pytest.mark.xfail("env.PYPY")
def test_multiple_inheritance_python():
# Based on test_multiple_inheritance.py:test_multiple_inheritance_python.
# Exercises values_and_holders with 2 value_and_holder instances.
mi1 = MI1(1, 2)
assert mi1.foo() == 1
assert mi1.bar() == 2
mi2 = MI2(3, 4)
assert mi2.v() == 1
assert mi2.foo() == 3
assert mi2.bar() == 4
mi3 = MI3(5, 6)
assert mi3.v() == 1
assert mi3.foo() == 5
assert mi3.bar() == 6
mi4 = MI4(7, 8)
assert mi4.v() == 1
assert mi4.foo() == 7
assert mi4.bar() == 8
mi5 = MI5(10, 11)
assert mi5.v() == 1
assert mi5.foo() == 10
assert mi5.bar() == 11
mi6 = MI6(12)
assert mi6.v() == 1
assert mi6.bar() == 12
mi7 = MI7(13)
assert mi7.v() == 4
assert mi7.bar() == 13
mi8 = MI8(14)
assert mi8.v() == 1
assert mi8.bar() == 14
mi8b = MI8b(15)
assert mi8b.v() == 3
assert mi8b.bar() == 15
DISOWN_CLS_I_J_V_LIST = [
(MI1, 1, 2, None),
(MI2, 3, 4, 1),
(MI3, 5, 6, 1),
(MI4, 7, 8, 1),
(MI5, 10, 11, 1),
]
@pytest.mark.xfail("env.PYPY", strict=False)
@pytest.mark.parametrize("cls, i, j, v", DISOWN_CLS_I_J_V_LIST)
def test_disown_base1_first(cls, i, j, v):
obj = cls(i, j)
assert obj.foo() == i
assert m.disown_base1(obj) == 2000 * i + 1
assert is_disowned(obj.foo)
assert obj.bar() == j
assert m.disown_base2(obj) == 2000 * j + 2
assert is_disowned(obj.bar)
if v is not None:
assert obj.v() == v
@pytest.mark.xfail("env.PYPY", strict=False)
@pytest.mark.parametrize("cls, i, j, v", DISOWN_CLS_I_J_V_LIST)
def test_disown_base2_first(cls, i, j, v):
obj = cls(i, j)
assert obj.bar() == j
assert m.disown_base2(obj) == 2000 * j + 2
assert is_disowned(obj.bar)
assert obj.foo() == i
assert m.disown_base1(obj) == 2000 * i + 1
assert is_disowned(obj.foo)
if v is not None:
assert obj.v() == v
@pytest.mark.xfail("env.PYPY", strict=False)
@pytest.mark.parametrize(
"cls, j, v",
[
(MI6, 12, 1),
(MI7, 13, 4),
(MI8, 14, 1),
(MI8b, 15, 3),
],
)
def test_disown_base2(cls, j, v):
obj = cls(j)
assert obj.bar() == j
assert m.disown_base2(obj) == 2000 * j + 2
assert is_disowned(obj.bar)
assert obj.v() == v