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https://github.com/pybind/pybind11.git
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1d1f81b278
This commit includes modifications that are needed to get pybind11 to work with PyPy. The full test suite compiles and runs except for a last few functions that are commented out (due to problems in PyPy that were reported on the PyPy bugtracker). Two somewhat intrusive changes were needed to make it possible: two new tags ``py::buffer_protocol()`` and ``py::metaclass()`` must now be specified to the ``class_`` constructor if the class uses the buffer protocol and/or requires a metaclass (e.g. for static properties). Note that this is only for the PyPy version based on Python 2.7 for now. When the PyPy 3.x has caught up in terms of cpyext compliance, a PyPy 3.x patch will follow.
81 lines
1.9 KiB
Python
81 lines
1.9 KiB
Python
import pytest
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def test_alias_delay_initialization1(capture):
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"""
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A only initializes its trampoline class when we inherit from it; if we just
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create and use an A instance directly, the trampoline initialization is
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bypassed and we only initialize an A() instead (for performance reasons).
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"""
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from pybind11_tests import A, call_f
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class B(A):
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def __init__(self):
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super(B, self).__init__()
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def f(self):
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print("In python f()")
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# C++ version
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with capture:
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a = A()
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call_f(a)
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del a
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pytest.gc_collect()
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assert capture == "A.f()"
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# Python version
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with capture:
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b = B()
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call_f(b)
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del b
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pytest.gc_collect()
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assert capture == """
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PyA.PyA()
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PyA.f()
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In python f()
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PyA.~PyA()
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"""
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def test_alias_delay_initialization2(capture):
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"""A2, unlike the above, is configured to always initialize the alias; while
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the extra initialization and extra class layer has small virtual dispatch
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performance penalty, it also allows us to do more things with the trampoline
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class such as defining local variables and performing construction/destruction.
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"""
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from pybind11_tests import A2, call_f
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class B2(A2):
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def __init__(self):
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super(B2, self).__init__()
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def f(self):
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print("In python B2.f()")
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# No python subclass version
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with capture:
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a2 = A2()
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call_f(a2)
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del a2
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pytest.gc_collect()
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assert capture == """
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PyA2.PyA2()
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PyA2.f()
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A2.f()
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PyA2.~PyA2()
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"""
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# Python subclass version
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with capture:
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b2 = B2()
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call_f(b2)
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del b2
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pytest.gc_collect()
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assert capture == """
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PyA2.PyA2()
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PyA2.f()
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In python B2.f()
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PyA2.~PyA2()
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"""
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