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import pytest
def test_multiple_inheritance_cpp():
from pybind11_tests import MIType
mt = MIType(3, 4)
assert mt.foo() == 3
assert mt.bar() == 4
def test_multiple_inheritance_mix1():
from pybind11_tests import Base2
class Base1:
def __init__(self, i):
self.i = i
def foo(self):
return self.i
class MITypePy(Base1, Base2):
def __init__(self, i, j):
Base1.__init__(self, i)
Base2.__init__(self, j)
mt = MITypePy(3, 4)
assert mt.foo() == 3
assert mt.bar() == 4
def test_multiple_inheritance_mix2():
from pybind11_tests import Base1
class Base2:
def __init__(self, i):
self.i = i
def bar(self):
return self.i
class MITypePy(Base1, Base2):
def __init__(self, i, j):
Base1.__init__(self, i)
Base2.__init__(self, j)
mt = MITypePy(3, 4)
assert mt.foo() == 3
assert mt.bar() == 4
def test_multiple_inheritance_error():
"""Inheriting from multiple C++ bases in Python is not supported"""
from pybind11_tests import Base1, Base2
with pytest.raises(TypeError) as excinfo:
# noinspection PyUnusedLocal
class MI(Base1, Base2):
pass
assert "Can't inherit from multiple C++ classes in Python" in str(excinfo.value)
def test_multiple_inheritance_virtbase():
from pybind11_tests import Base12a, bar_base2a, bar_base2a_sharedptr
class MITypePy(Base12a):
def __init__(self, i, j):
Base12a.__init__(self, i, j)
mt = MITypePy(3, 4)
assert mt.bar() == 4
assert bar_base2a(mt) == 4
assert bar_base2a_sharedptr(mt) == 4
def test_mi_static_properties():
"""Mixing bases with and without static properties should be possible
and the result should be independent of base definition order"""
from pybind11_tests import mi
for d in (mi.VanillaStaticMix1(), mi.VanillaStaticMix2()):
assert d.vanilla() == "Vanilla"
assert d.static_func1() == "WithStatic1"
assert d.static_func2() == "WithStatic2"
assert d.static_func() == d.__class__.__name__
mi.WithStatic1.static_value1 = 1
mi.WithStatic2.static_value2 = 2
assert d.static_value1 == 1
assert d.static_value2 == 2
assert d.static_value == 12
d.static_value1 = 0
assert d.static_value1 == 0
d.static_value2 = 0
assert d.static_value2 == 0
d.static_value = 0
assert d.static_value == 0
@pytest.unsupported_on_pypy
def test_mi_dynamic_attributes():
"""Mixing bases with and without dynamic attribute support"""
from pybind11_tests import mi
for d in (mi.VanillaDictMix1(), mi.VanillaDictMix2()):
d.dynamic = 1
assert d.dynamic == 1
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