368 lines
12 KiB
Python
368 lines
12 KiB
Python
# -*- coding: utf-8 -*-
|
|
import pytest
|
|
|
|
import env # noqa: F401
|
|
|
|
from pybind11_tests import class_ as m
|
|
from pybind11_tests import UserType, ConstructorStats
|
|
|
|
|
|
def test_repr():
|
|
# In Python 3.3+, repr() accesses __qualname__
|
|
assert "pybind11_type" in repr(type(UserType))
|
|
assert "UserType" in repr(UserType)
|
|
|
|
|
|
def test_instance(msg):
|
|
with pytest.raises(TypeError) as excinfo:
|
|
m.NoConstructor()
|
|
assert msg(excinfo.value) == "m.class_.NoConstructor: No constructor defined!"
|
|
|
|
instance = m.NoConstructor.new_instance()
|
|
|
|
cstats = ConstructorStats.get(m.NoConstructor)
|
|
assert cstats.alive() == 1
|
|
del instance
|
|
assert cstats.alive() == 0
|
|
|
|
|
|
def test_type():
|
|
assert m.check_type(1) == m.DerivedClass1
|
|
with pytest.raises(RuntimeError) as execinfo:
|
|
m.check_type(0)
|
|
|
|
assert 'pybind11::detail::get_type_info: unable to find type info' in str(execinfo.value)
|
|
assert 'Invalid' in str(execinfo.value)
|
|
|
|
# Currently not supported
|
|
# See https://github.com/pybind/pybind11/issues/2486
|
|
# assert m.check_type(2) == int
|
|
|
|
|
|
def test_type_of_py():
|
|
assert m.get_type_of(1) == int
|
|
assert m.get_type_of(m.DerivedClass1()) == m.DerivedClass1
|
|
assert m.get_type_of(int) == type
|
|
|
|
|
|
def test_type_of_py_nodelete():
|
|
# If the above test deleted the class, this will segfault
|
|
assert m.get_type_of(m.DerivedClass1()) == m.DerivedClass1
|
|
|
|
|
|
def test_as_type_py():
|
|
assert m.as_type(int) == int
|
|
|
|
with pytest.raises(RuntimeError):
|
|
assert m.as_type(1) == int
|
|
|
|
with pytest.raises(RuntimeError):
|
|
assert m.as_type(m.DerivedClass1()) == m.DerivedClass1
|
|
|
|
|
|
def test_docstrings(doc):
|
|
assert doc(UserType) == "A `py::class_` type for testing"
|
|
assert UserType.__name__ == "UserType"
|
|
assert UserType.__module__ == "pybind11_tests"
|
|
assert UserType.get_value.__name__ == "get_value"
|
|
assert UserType.get_value.__module__ == "pybind11_tests"
|
|
|
|
assert doc(UserType.get_value) == """
|
|
get_value(self: m.UserType) -> int
|
|
|
|
Get value using a method
|
|
"""
|
|
assert doc(UserType.value) == "Get/set value using a property"
|
|
|
|
assert doc(m.NoConstructor.new_instance) == """
|
|
new_instance() -> m.class_.NoConstructor
|
|
|
|
Return an instance
|
|
"""
|
|
|
|
|
|
def test_qualname(doc):
|
|
"""Tests that a properly qualified name is set in __qualname__ (even in pre-3.3, where we
|
|
backport the attribute) and that generated docstrings properly use it and the module name"""
|
|
assert m.NestBase.__qualname__ == "NestBase"
|
|
assert m.NestBase.Nested.__qualname__ == "NestBase.Nested"
|
|
|
|
assert doc(m.NestBase.__init__) == """
|
|
__init__(self: m.class_.NestBase) -> None
|
|
"""
|
|
assert doc(m.NestBase.g) == """
|
|
g(self: m.class_.NestBase, arg0: m.class_.NestBase.Nested) -> None
|
|
"""
|
|
assert doc(m.NestBase.Nested.__init__) == """
|
|
__init__(self: m.class_.NestBase.Nested) -> None
|
|
"""
|
|
assert doc(m.NestBase.Nested.fn) == """
|
|
fn(self: m.class_.NestBase.Nested, arg0: int, arg1: m.class_.NestBase, arg2: m.class_.NestBase.Nested) -> None
|
|
""" # noqa: E501 line too long
|
|
assert doc(m.NestBase.Nested.fa) == """
|
|
fa(self: m.class_.NestBase.Nested, a: int, b: m.class_.NestBase, c: m.class_.NestBase.Nested) -> None
|
|
""" # noqa: E501 line too long
|
|
assert m.NestBase.__module__ == "pybind11_tests.class_"
|
|
assert m.NestBase.Nested.__module__ == "pybind11_tests.class_"
|
|
|
|
|
|
def test_inheritance(msg):
|
|
roger = m.Rabbit('Rabbit')
|
|
assert roger.name() + " is a " + roger.species() == "Rabbit is a parrot"
|
|
assert m.pet_name_species(roger) == "Rabbit is a parrot"
|
|
|
|
polly = m.Pet('Polly', 'parrot')
|
|
assert polly.name() + " is a " + polly.species() == "Polly is a parrot"
|
|
assert m.pet_name_species(polly) == "Polly is a parrot"
|
|
|
|
molly = m.Dog('Molly')
|
|
assert molly.name() + " is a " + molly.species() == "Molly is a dog"
|
|
assert m.pet_name_species(molly) == "Molly is a dog"
|
|
|
|
fred = m.Hamster('Fred')
|
|
assert fred.name() + " is a " + fred.species() == "Fred is a rodent"
|
|
|
|
assert m.dog_bark(molly) == "Woof!"
|
|
|
|
with pytest.raises(TypeError) as excinfo:
|
|
m.dog_bark(polly)
|
|
assert msg(excinfo.value) == """
|
|
dog_bark(): incompatible function arguments. The following argument types are supported:
|
|
1. (arg0: m.class_.Dog) -> str
|
|
|
|
Invoked with: <m.class_.Pet object at 0>
|
|
"""
|
|
|
|
with pytest.raises(TypeError) as excinfo:
|
|
m.Chimera("lion", "goat")
|
|
assert "No constructor defined!" in str(excinfo.value)
|
|
|
|
|
|
def test_inheritance_init(msg):
|
|
|
|
# Single base
|
|
class Python(m.Pet):
|
|
def __init__(self):
|
|
pass
|
|
with pytest.raises(TypeError) as exc_info:
|
|
Python()
|
|
expected = ["m.class_.Pet.__init__() must be called when overriding __init__",
|
|
"Pet.__init__() must be called when overriding __init__"] # PyPy?
|
|
# TODO: fix PyPy error message wrt. tp_name/__qualname__?
|
|
assert msg(exc_info.value) in expected
|
|
|
|
# Multiple bases
|
|
class RabbitHamster(m.Rabbit, m.Hamster):
|
|
def __init__(self):
|
|
m.Rabbit.__init__(self, "RabbitHamster")
|
|
|
|
with pytest.raises(TypeError) as exc_info:
|
|
RabbitHamster()
|
|
expected = ["m.class_.Hamster.__init__() must be called when overriding __init__",
|
|
"Hamster.__init__() must be called when overriding __init__"] # PyPy
|
|
assert msg(exc_info.value) in expected
|
|
|
|
|
|
def test_automatic_upcasting():
|
|
assert type(m.return_class_1()).__name__ == "DerivedClass1"
|
|
assert type(m.return_class_2()).__name__ == "DerivedClass2"
|
|
assert type(m.return_none()).__name__ == "NoneType"
|
|
# Repeat these a few times in a random order to ensure no invalid caching is applied
|
|
assert type(m.return_class_n(1)).__name__ == "DerivedClass1"
|
|
assert type(m.return_class_n(2)).__name__ == "DerivedClass2"
|
|
assert type(m.return_class_n(0)).__name__ == "BaseClass"
|
|
assert type(m.return_class_n(2)).__name__ == "DerivedClass2"
|
|
assert type(m.return_class_n(2)).__name__ == "DerivedClass2"
|
|
assert type(m.return_class_n(0)).__name__ == "BaseClass"
|
|
assert type(m.return_class_n(1)).__name__ == "DerivedClass1"
|
|
|
|
|
|
def test_isinstance():
|
|
objects = [tuple(), dict(), m.Pet("Polly", "parrot")] + [m.Dog("Molly")] * 4
|
|
expected = (True, True, True, True, True, False, False)
|
|
assert m.check_instances(objects) == expected
|
|
|
|
|
|
def test_mismatched_holder():
|
|
import re
|
|
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
m.mismatched_holder_1()
|
|
assert re.match('generic_type: type ".*MismatchDerived1" does not have a non-default '
|
|
'holder type while its base ".*MismatchBase1" does', str(excinfo.value))
|
|
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
m.mismatched_holder_2()
|
|
assert re.match('generic_type: type ".*MismatchDerived2" has a non-default holder type '
|
|
'while its base ".*MismatchBase2" does not', str(excinfo.value))
|
|
|
|
|
|
def test_override_static():
|
|
"""#511: problem with inheritance + overwritten def_static"""
|
|
b = m.MyBase.make()
|
|
d1 = m.MyDerived.make2()
|
|
d2 = m.MyDerived.make()
|
|
|
|
assert isinstance(b, m.MyBase)
|
|
assert isinstance(d1, m.MyDerived)
|
|
assert isinstance(d2, m.MyDerived)
|
|
|
|
|
|
def test_implicit_conversion_life_support():
|
|
"""Ensure the lifetime of temporary objects created for implicit conversions"""
|
|
assert m.implicitly_convert_argument(UserType(5)) == 5
|
|
assert m.implicitly_convert_variable(UserType(5)) == 5
|
|
|
|
assert "outside a bound function" in m.implicitly_convert_variable_fail(UserType(5))
|
|
|
|
|
|
def test_operator_new_delete(capture):
|
|
"""Tests that class-specific operator new/delete functions are invoked"""
|
|
|
|
class SubAliased(m.AliasedHasOpNewDelSize):
|
|
pass
|
|
|
|
with capture:
|
|
a = m.HasOpNewDel()
|
|
b = m.HasOpNewDelSize()
|
|
d = m.HasOpNewDelBoth()
|
|
assert capture == """
|
|
A new 8
|
|
B new 4
|
|
D new 32
|
|
"""
|
|
sz_alias = str(m.AliasedHasOpNewDelSize.size_alias)
|
|
sz_noalias = str(m.AliasedHasOpNewDelSize.size_noalias)
|
|
with capture:
|
|
c = m.AliasedHasOpNewDelSize()
|
|
c2 = SubAliased()
|
|
assert capture == (
|
|
"C new " + sz_noalias + "\n" +
|
|
"C new " + sz_alias + "\n"
|
|
)
|
|
|
|
with capture:
|
|
del a
|
|
pytest.gc_collect()
|
|
del b
|
|
pytest.gc_collect()
|
|
del d
|
|
pytest.gc_collect()
|
|
assert capture == """
|
|
A delete
|
|
B delete 4
|
|
D delete
|
|
"""
|
|
|
|
with capture:
|
|
del c
|
|
pytest.gc_collect()
|
|
del c2
|
|
pytest.gc_collect()
|
|
assert capture == (
|
|
"C delete " + sz_noalias + "\n" +
|
|
"C delete " + sz_alias + "\n"
|
|
)
|
|
|
|
|
|
def test_bind_protected_functions():
|
|
"""Expose protected member functions to Python using a helper class"""
|
|
a = m.ProtectedA()
|
|
assert a.foo() == 42
|
|
|
|
b = m.ProtectedB()
|
|
assert b.foo() == 42
|
|
|
|
class C(m.ProtectedB):
|
|
def __init__(self):
|
|
m.ProtectedB.__init__(self)
|
|
|
|
def foo(self):
|
|
return 0
|
|
|
|
c = C()
|
|
assert c.foo() == 0
|
|
|
|
|
|
def test_brace_initialization():
|
|
""" Tests that simple POD classes can be constructed using C++11 brace initialization """
|
|
a = m.BraceInitialization(123, "test")
|
|
assert a.field1 == 123
|
|
assert a.field2 == "test"
|
|
|
|
# Tests that a non-simple class doesn't get brace initialization (if the
|
|
# class defines an initializer_list constructor, in particular, it would
|
|
# win over the expected constructor).
|
|
b = m.NoBraceInitialization([123, 456])
|
|
assert b.vec == [123, 456]
|
|
|
|
|
|
@pytest.mark.xfail("env.PYPY")
|
|
def test_class_refcount():
|
|
"""Instances must correctly increase/decrease the reference count of their types (#1029)"""
|
|
from sys import getrefcount
|
|
|
|
class PyDog(m.Dog):
|
|
pass
|
|
|
|
for cls in m.Dog, PyDog:
|
|
refcount_1 = getrefcount(cls)
|
|
molly = [cls("Molly") for _ in range(10)]
|
|
refcount_2 = getrefcount(cls)
|
|
|
|
del molly
|
|
pytest.gc_collect()
|
|
refcount_3 = getrefcount(cls)
|
|
|
|
assert refcount_1 == refcount_3
|
|
assert refcount_2 > refcount_1
|
|
|
|
|
|
def test_reentrant_implicit_conversion_failure(msg):
|
|
# ensure that there is no runaway reentrant implicit conversion (#1035)
|
|
with pytest.raises(TypeError) as excinfo:
|
|
m.BogusImplicitConversion(0)
|
|
assert msg(excinfo.value) == '''
|
|
__init__(): incompatible constructor arguments. The following argument types are supported:
|
|
1. m.class_.BogusImplicitConversion(arg0: m.class_.BogusImplicitConversion)
|
|
|
|
Invoked with: 0
|
|
'''
|
|
|
|
|
|
def test_error_after_conversions():
|
|
with pytest.raises(TypeError) as exc_info:
|
|
m.test_error_after_conversions("hello")
|
|
assert str(exc_info.value).startswith(
|
|
"Unable to convert function return value to a Python type!")
|
|
|
|
|
|
def test_aligned():
|
|
if hasattr(m, "Aligned"):
|
|
p = m.Aligned().ptr()
|
|
assert p % 1024 == 0
|
|
|
|
|
|
# https://foss.heptapod.net/pypy/pypy/-/issues/2742
|
|
@pytest.mark.xfail("env.PYPY")
|
|
def test_final():
|
|
with pytest.raises(TypeError) as exc_info:
|
|
class PyFinalChild(m.IsFinal):
|
|
pass
|
|
assert str(exc_info.value).endswith("is not an acceptable base type")
|
|
|
|
|
|
# https://foss.heptapod.net/pypy/pypy/-/issues/2742
|
|
@pytest.mark.xfail("env.PYPY")
|
|
def test_non_final_final():
|
|
with pytest.raises(TypeError) as exc_info:
|
|
class PyNonFinalFinalChild(m.IsNonFinalFinal):
|
|
pass
|
|
assert str(exc_info.value).endswith("is not an acceptable base type")
|
|
|
|
|
|
# https://github.com/pybind/pybind11/issues/1878
|
|
def test_exception_rvalue_abort():
|
|
with pytest.raises(RuntimeError):
|
|
m.PyPrintDestructor().throw_something()
|