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Commit 44a17e1f by Jason Rhinelander
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Convert test_multiple_inheritance to new style 

Significant rearrangement, but no new tests added.
parent 79372601
Showing with 149 additions and 173 deletions
tests/test_multiple_inheritance.cpp
......@@ -11,47 +11,74 @@
#include "pybind11_tests.h"
#include "constructor_stats.h"
struct Base1 {
Base1(int i) : i(i) { }
int foo() { return i; }
int i;
};
struct Base2 {
Base2(int i) : i(i) { }
int bar() { return i; }
int i;
};
// Many bases for testing that multiple inheritance from many classes (i.e. requiring extra
// space for holder constructed flags) works.
template <int N> struct BaseN {
BaseN(int i) : i(i) { }
int i;
};
struct Base12 : Base1, Base2 {
Base12(int i, int j) : Base1(i), Base2(j) { }
// test_mi_static_properties
struct Vanilla {
std::string vanilla() { return "Vanilla"; };
};
struct MIType : Base12 {
MIType(int i, int j) : Base12(i, j) { }
struct WithStatic1 {
static std::string static_func1() { return "WithStatic1"; };
static int static_value1;
};
struct WithStatic2 {
static std::string static_func2() { return "WithStatic2"; };
static int static_value2;
};
struct VanillaStaticMix1 : Vanilla, WithStatic1, WithStatic2 {
static std::string static_func() { return "VanillaStaticMix1"; }
static int static_value;
};
struct VanillaStaticMix2 : WithStatic1, Vanilla, WithStatic2 {
static std::string static_func() { return "VanillaStaticMix2"; }
static int static_value;
};
int WithStatic1::static_value1 = 1;
int WithStatic2::static_value2 = 2;
int VanillaStaticMix1::static_value = 12;
int VanillaStaticMix2::static_value = 12;
TEST_SUBMODULE(multiple_inheritance, m) {
test_initializer multiple_inheritance([](py::module &m) {
// test_multiple_inheritance_mix1
// test_multiple_inheritance_mix2
struct Base1 {
Base1(int i) : i(i) { }
int foo() { return i; }
int i;
};
py::class_<Base1> b1(m, "Base1");
b1.def(py::init<int>())
.def("foo", &Base1::foo);
struct Base2 {
Base2(int i) : i(i) { }
int bar() { return i; }
int i;
};
py::class_<Base2> b2(m, "Base2");
b2.def(py::init<int>())
.def("bar", &Base2::bar);
py::class_<Base12, Base1, Base2>(m, "Base12");
// test_multiple_inheritance_cpp
struct Base12 : Base1, Base2 {
Base12(int i, int j) : Base1(i), Base2(j) { }
};
struct MIType : Base12 {
MIType(int i, int j) : Base12(i, j) { }
};
py::class_<Base12, Base1, Base2>(m, "Base12");
py::class_<MIType, Base12>(m, "MIType")
.def(py::init<int, int>());
// Many bases for testing that multiple inheritance from many classes (i.e. requiring extra
// space for holder constructed flags) works.
// test_multiple_inheritance_python_many_bases
#define PYBIND11_BASEN(N) py::class_<BaseN<N>>(m, "BaseN" #N).def(py::init<int>()).def("f" #N, [](BaseN<N> &b) { return b.i + N; })
PYBIND11_BASEN( 1); PYBIND11_BASEN( 2); PYBIND11_BASEN( 3); PYBIND11_BASEN( 4);
PYBIND11_BASEN( 5); PYBIND11_BASEN( 6); PYBIND11_BASEN( 7); PYBIND11_BASEN( 8);
......@@ -67,55 +94,50 @@ test_initializer multiple_inheritance([](py::module &m) {
// };
// py::class_<Base12v2>(m, "Base12v2", b1, b2)
// .def(py::init<int, int>());
});
/* Test the case where not all base classes are specified,
and where pybind11 requires the py::multiple_inheritance
flag to perform proper casting between types */
struct Base1a {
// test_multiple_inheritance_virtbase
// Test the case where not all base classes are specified, and where pybind11 requires the
// py::multiple_inheritance flag to perform proper casting between types.
struct Base1a {
Base1a(int i) : i(i) { }
int foo() { return i; }
int i;
};
struct Base2a {
Base2a(int i) : i(i) { }
int bar() { return i; }
int i;
};
struct Base12a : Base1a, Base2a {
Base12a(int i, int j) : Base1a(i), Base2a(j) { }
};
test_initializer multiple_inheritance_nonexplicit([](py::module &m) {
};
py::class_<Base1a, std::shared_ptr<Base1a>>(m, "Base1a")
.def(py::init<int>())
.def("foo", &Base1a::foo);
struct Base2a {
Base2a(int i) : i(i) { }
int bar() { return i; }
int i;
};
py::class_<Base2a, std::shared_ptr<Base2a>>(m, "Base2a")
.def(py::init<int>())
.def("bar", &Base2a::bar);
struct Base12a : Base1a, Base2a {
Base12a(int i, int j) : Base1a(i), Base2a(j) { }
};
py::class_<Base12a, /* Base1 missing */ Base2a,
std::shared_ptr<Base12a>>(m, "Base12a", py::multiple_inheritance())
.def(py::init<int, int>());
m.def("bar_base2a", [](Base2a *b) { return b->bar(); });
m.def("bar_base2a_sharedptr", [](std::shared_ptr<Base2a> b) { return b->bar(); });
});
// Issue #801: invalid casting to derived type with MI bases
struct I801B1 { int a = 1; virtual ~I801B1() = default; };
struct I801B2 { int b = 2; virtual ~I801B2() = default; };
struct I801C : I801B1, I801B2 {};
struct I801D : I801C {}; // Indirect MI
// Unregistered classes:
struct I801B3 { int c = 3; virtual ~I801B3() = default; };
struct I801E : I801B3, I801D {};
test_initializer multiple_inheritance_casting([](py::module &m) {
// test_mi_unaligned_base
// test_mi_base_return
// Issue #801: invalid casting to derived type with MI bases
struct I801B1 { int a = 1; virtual ~I801B1() = default; };
struct I801B2 { int b = 2; virtual ~I801B2() = default; };
struct I801C : I801B1, I801B2 {};
struct I801D : I801C {}; // Indirect MI
// Unregistered classes:
struct I801B3 { int c = 3; virtual ~I801B3() = default; };
struct I801E : I801B3, I801D {};
py::class_<I801B1, std::shared_ptr<I801B1>>(m, "I801B1").def(py::init<>()).def_readonly("a", &I801B1::a);
py::class_<I801B2, std::shared_ptr<I801B2>>(m, "I801B2").def(py::init<>()).def_readonly("b", &I801B2::b);
py::class_<I801C, I801B1, I801B2, std::shared_ptr<I801C>>(m, "I801C").def(py::init<>());
......@@ -141,46 +163,9 @@ test_initializer multiple_inheritance_casting([](py::module &m) {
// isn't pybind-registered (and uses multiple-inheritance to offset the pybind base)
m.def("i801e_c", []() -> I801C * { return new I801E(); });
m.def("i801e_b2", []() -> I801B2 * { return new I801E(); });
});
struct Vanilla {
std::string vanilla() { return "Vanilla"; };
};
struct WithStatic1 {
static std::string static_func1() { return "WithStatic1"; };
static int static_value1;
};
struct WithStatic2 {
static std::string static_func2() { return "WithStatic2"; };
static int static_value2;
};
struct WithDict { };
struct VanillaStaticMix1 : Vanilla, WithStatic1, WithStatic2 {
static std::string static_func() { return "VanillaStaticMix1"; }
static int static_value;
};
struct VanillaStaticMix2 : WithStatic1, Vanilla, WithStatic2 {
static std::string static_func() { return "VanillaStaticMix2"; }
static int static_value;
};
struct VanillaDictMix1 : Vanilla, WithDict { };
struct VanillaDictMix2 : WithDict, Vanilla { };
int WithStatic1::static_value1 = 1;
int WithStatic2::static_value2 = 2;
int VanillaStaticMix1::static_value = 12;
int VanillaStaticMix2::static_value = 12;
test_initializer mi_static_properties([](py::module &pm) {
auto m = pm.def_submodule("mi");
// test_mi_static_properties
py::class_<Vanilla>(m, "Vanilla")
.def(py::init<>())
.def("vanilla", &Vanilla::vanilla);
......@@ -207,9 +192,13 @@ test_initializer mi_static_properties([](py::module &pm) {
.def_static("static_func", &VanillaStaticMix2::static_func)
.def_readwrite_static("static_value", &VanillaStaticMix2::static_value);
#if !defined(PYPY_VERSION)
struct WithDict { };
struct VanillaDictMix1 : Vanilla, WithDict { };
struct VanillaDictMix2 : WithDict, Vanilla { };
py::class_<WithDict>(m, "WithDict", py::dynamic_attr()).def(py::init<>());
py::class_<VanillaDictMix1, Vanilla, WithDict>(m, "VanillaDictMix1").def(py::init<>());
py::class_<VanillaDictMix2, WithDict, Vanilla>(m, "VanillaDictMix2").def(py::init<>());
#endif
});
}
tests/test_multiple_inheritance.py
import pytest
from pybind11_tests import ConstructorStats
from pybind11_tests import multiple_inheritance as m
def test_multiple_inheritance_cpp():
from pybind11_tests import MIType
mt = MIType(3, 4)
mt = m.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
......@@ -21,10 +18,10 @@ def test_multiple_inheritance_mix1():
def foo(self):
return self.i
class MITypePy(Base1, Base2):
class MITypePy(Base1, m.Base2):
def __init__(self, i, j):
Base1.__init__(self, i)
Base2.__init__(self, j)
m.Base2.__init__(self, j)
mt = MITypePy(3, 4)
......@@ -33,7 +30,6 @@ def test_multiple_inheritance_mix1():
def test_multiple_inheritance_mix2():
from pybind11_tests import Base1
class Base2:
def __init__(self, i):
......@@ -42,9 +38,9 @@ def test_multiple_inheritance_mix2():
def bar(self):
return self.i
class MITypePy(Base1, Base2):
class MITypePy(m.Base1, Base2):
def __init__(self, i, j):
Base1.__init__(self, i)
m.Base1.__init__(self, i)
Base2.__init__(self, j)
mt = MITypePy(3, 4)
......@@ -54,41 +50,40 @@ def test_multiple_inheritance_mix2():
def test_multiple_inheritance_python():
from pybind11_tests import Base1, Base2
class MI1(Base1, Base2):
class MI1(m.Base1, m.Base2):
def __init__(self, i, j):
Base1.__init__(self, i)
Base2.__init__(self, j)
m.Base1.__init__(self, i)
m.Base2.__init__(self, j)
class B1(object):
def v(self):
return 1
class MI2(B1, Base1, Base2):
class MI2(B1, m.Base1, m.Base2):
def __init__(self, i, j):
B1.__init__(self)
Base1.__init__(self, i)
Base2.__init__(self, j)
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, Base2):
class MI4(MI3, m.Base2):
def __init__(self, i, j, k):
MI2.__init__(self, j, k)
Base2.__init__(self, i)
m.Base2.__init__(self, i)
class MI5(Base2, B1, Base1):
class MI5(m.Base2, B1, m.Base1):
def __init__(self, i, j):
B1.__init__(self)
Base1.__init__(self, i)
Base2.__init__(self, j)
m.Base1.__init__(self, i)
m.Base2.__init__(self, j)
class MI6(Base2, B1):
class MI6(m.Base2, B1):
def __init__(self, i):
Base2.__init__(self, i)
m.Base2.__init__(self, i)
B1.__init__(self)
class B2(B1):
......@@ -160,47 +155,45 @@ def test_multiple_inheritance_python():
def test_multiple_inheritance_python_many_bases():
from pybind11_tests import (BaseN1, BaseN2, BaseN3, BaseN4, BaseN5, BaseN6, BaseN7,
BaseN8, BaseN9, BaseN10, BaseN11, BaseN12, BaseN13, BaseN14,
BaseN15, BaseN16, BaseN17)
class MIMany14(BaseN1, BaseN2, BaseN3, BaseN4):
class MIMany14(m.BaseN1, m.BaseN2, m.BaseN3, m.BaseN4):
def __init__(self):
BaseN1.__init__(self, 1)
BaseN2.__init__(self, 2)
BaseN3.__init__(self, 3)
BaseN4.__init__(self, 4)
m.BaseN1.__init__(self, 1)
m.BaseN2.__init__(self, 2)
m.BaseN3.__init__(self, 3)
m.BaseN4.__init__(self, 4)
class MIMany58(BaseN5, BaseN6, BaseN7, BaseN8):
class MIMany58(m.BaseN5, m.BaseN6, m.BaseN7, m.BaseN8):
def __init__(self):
BaseN5.__init__(self, 5)
BaseN6.__init__(self, 6)
BaseN7.__init__(self, 7)
BaseN8.__init__(self, 8)
m.BaseN5.__init__(self, 5)
m.BaseN6.__init__(self, 6)
m.BaseN7.__init__(self, 7)
m.BaseN8.__init__(self, 8)
class MIMany916(BaseN9, BaseN10, BaseN11, BaseN12, BaseN13, BaseN14, BaseN15, BaseN16):
class MIMany916(m.BaseN9, m.BaseN10, m.BaseN11, m.BaseN12, m.BaseN13, m.BaseN14, m.BaseN15,
m.BaseN16):
def __init__(self):
BaseN9.__init__(self, 9)
BaseN10.__init__(self, 10)
BaseN11.__init__(self, 11)
BaseN12.__init__(self, 12)
BaseN13.__init__(self, 13)
BaseN14.__init__(self, 14)
BaseN15.__init__(self, 15)
BaseN16.__init__(self, 16)
class MIMany19(MIMany14, MIMany58, BaseN9):
m.BaseN9.__init__(self, 9)
m.BaseN10.__init__(self, 10)
m.BaseN11.__init__(self, 11)
m.BaseN12.__init__(self, 12)
m.BaseN13.__init__(self, 13)
m.BaseN14.__init__(self, 14)
m.BaseN15.__init__(self, 15)
m.BaseN16.__init__(self, 16)
class MIMany19(MIMany14, MIMany58, m.BaseN9):
def __init__(self):
MIMany14.__init__(self)
MIMany58.__init__(self)
BaseN9.__init__(self, 9)
m.BaseN9.__init__(self, 9)
class MIMany117(MIMany14, MIMany58, MIMany916, BaseN17):
class MIMany117(MIMany14, MIMany58, MIMany916, m.BaseN17):
def __init__(self):
MIMany14.__init__(self)
MIMany58.__init__(self)
MIMany916.__init__(self)
BaseN17.__init__(self, 17)
m.BaseN17.__init__(self, 17)
# Inherits from 4 registered C++ classes: can fit in one pointer on any modern arch:
a = MIMany14()
......@@ -224,31 +217,29 @@ def test_multiple_inheritance_python_many_bases():
def test_multiple_inheritance_virtbase():
from pybind11_tests import Base12a, bar_base2a, bar_base2a_sharedptr
class MITypePy(Base12a):
class MITypePy(m.Base12a):
def __init__(self, i, j):
Base12a.__init__(self, i, j)
m.Base12a.__init__(self, i, j)
mt = MITypePy(3, 4)
assert mt.bar() == 4
assert bar_base2a(mt) == 4
assert bar_base2a_sharedptr(mt) == 4
assert m.bar_base2a(mt) == 4
assert m.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()):
for d in (m.VanillaStaticMix1(), m.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
m.WithStatic1.static_value1 = 1
m.WithStatic2.static_value2 = 2
assert d.static_value1 == 1
assert d.static_value2 == 2
assert d.static_value == 12
......@@ -264,30 +255,28 @@ def test_mi_static_properties():
@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()):
for d in (m.VanillaDictMix1(), m.VanillaDictMix2()):
d.dynamic = 1
assert d.dynamic == 1
def test_mi_unaligned_base():
"""Returning an offset (non-first MI) base class pointer should recognize the instance"""
from pybind11_tests import I801C, I801D, i801b1_c, i801b2_c, i801b1_d, i801b2_d
n_inst = ConstructorStats.detail_reg_inst()
c = I801C()
d = I801D()
c = m.I801C()
d = m.I801D()
# + 4 below because we have the two instances, and each instance has offset base I801B2
assert ConstructorStats.detail_reg_inst() == n_inst + 4
b1c = i801b1_c(c)
b1c = m.i801b1_c(c)
assert b1c is c
b2c = i801b2_c(c)
b2c = m.i801b2_c(c)
assert b2c is c
b1d = i801b1_d(d)
b1d = m.i801b1_d(d)
assert b1d is d
b2d = i801b2_d(d)
b2d = m.i801b2_d(d)
assert b2d is d
assert ConstructorStats.detail_reg_inst() == n_inst + 4 # no extra instances
......@@ -299,30 +288,28 @@ def test_mi_unaligned_base():
def test_mi_base_return():
"""Tests returning an offset (non-first MI) base class pointer to a derived instance"""
from pybind11_tests import (I801B2, I801C, I801D, i801c_b1, i801c_b2, i801d_b1, i801d_b2,
i801e_c, i801e_b2)
n_inst = ConstructorStats.detail_reg_inst()
c1 = i801c_b1()
assert type(c1) is I801C
c1 = m.i801c_b1()
assert type(c1) is m.I801C
assert c1.a == 1
assert c1.b == 2
d1 = i801d_b1()
assert type(d1) is I801D
d1 = m.i801d_b1()
assert type(d1) is m.I801D
assert d1.a == 1
assert d1.b == 2
assert ConstructorStats.detail_reg_inst() == n_inst + 4
c2 = i801c_b2()
assert type(c2) is I801C
c2 = m.i801c_b2()
assert type(c2) is m.I801C
assert c2.a == 1
assert c2.b == 2
d2 = i801d_b2()
assert type(d2) is I801D
d2 = m.i801d_b2()
assert type(d2) is m.I801D
assert d2.a == 1
assert d2.b == 2
......@@ -336,11 +323,11 @@ def test_mi_base_return():
# Returning an unregistered derived type with a registered base; we won't
# pick up the derived type, obviously, but should still work (as an object
# of whatever type was returned).
e1 = i801e_c()
assert type(e1) is I801C
e1 = m.i801e_c()
assert type(e1) is m.I801C
assert e1.a == 1
assert e1.b == 2
e2 = i801e_b2()
assert type(e2) is I801B2
e2 = m.i801e_b2()
assert type(e2) is m.I801B2
assert e2.b == 2
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