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217 lines
6.5 KiB
Python
217 lines
6.5 KiB
Python
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import pytest
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from pybind11_tests import call_policies as m
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from pybind11_tests import ConstructorStats, UserType
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def test_keep_alive_argument(capture):
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n_inst = ConstructorStats.detail_reg_inst()
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with capture:
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p = m.Parent()
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assert capture == "Allocating parent."
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with capture:
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p.addChild(m.Child())
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assert ConstructorStats.detail_reg_inst() == n_inst + 1
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assert capture == """
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Allocating child.
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Releasing child.
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"""
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with capture:
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del p
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == "Releasing parent."
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with capture:
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p = m.Parent()
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assert capture == "Allocating parent."
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with capture:
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p.addChildKeepAlive(m.Child())
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assert ConstructorStats.detail_reg_inst() == n_inst + 2
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assert capture == "Allocating child."
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with capture:
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del p
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == """
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Releasing parent.
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Releasing child.
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"""
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def test_keep_alive_return_value(capture):
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n_inst = ConstructorStats.detail_reg_inst()
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with capture:
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p = m.Parent()
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assert capture == "Allocating parent."
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with capture:
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p.returnChild()
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assert ConstructorStats.detail_reg_inst() == n_inst + 1
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assert capture == """
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Allocating child.
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Releasing child.
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"""
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with capture:
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del p
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == "Releasing parent."
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with capture:
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p = m.Parent()
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assert capture == "Allocating parent."
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with capture:
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p.returnChildKeepAlive()
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assert ConstructorStats.detail_reg_inst() == n_inst + 2
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assert capture == "Allocating child."
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with capture:
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del p
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == """
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Releasing parent.
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Releasing child.
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"""
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def test_keep_alive_single():
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"""Issue #1251 - patients are stored multiple times when given to the same nurse"""
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nurse, p1, p2 = UserType(), UserType(), UserType()
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b = m.refcount(nurse)
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assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b, b]
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m.add_patient(nurse, p1)
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assert m.get_patients(nurse) == [p1, ]
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assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b]
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m.add_patient(nurse, p1)
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assert m.get_patients(nurse) == [p1, ]
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assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b]
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m.add_patient(nurse, p1)
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assert m.get_patients(nurse) == [p1, ]
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assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b]
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m.add_patient(nurse, p2)
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assert m.get_patients(nurse) == [p1, p2]
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assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b + 1]
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m.add_patient(nurse, p2)
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assert m.get_patients(nurse) == [p1, p2]
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assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b + 1]
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m.add_patient(nurse, p2)
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m.add_patient(nurse, p1)
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assert m.get_patients(nurse) == [p1, p2]
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assert [m.refcount(nurse), m.refcount(p1), m.refcount(p2)] == [b, b + 1, b + 1]
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del nurse
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assert [m.refcount(p1), m.refcount(p2)] == [b, b]
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# https://bitbucket.org/pypy/pypy/issues/2447
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@pytest.unsupported_on_pypy
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def test_alive_gc(capture):
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n_inst = ConstructorStats.detail_reg_inst()
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p = m.ParentGC()
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p.addChildKeepAlive(m.Child())
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assert ConstructorStats.detail_reg_inst() == n_inst + 2
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lst = [p]
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lst.append(lst) # creates a circular reference
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with capture:
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del p, lst
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == """
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Releasing parent.
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Releasing child.
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"""
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def test_alive_gc_derived(capture):
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class Derived(m.Parent):
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pass
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n_inst = ConstructorStats.detail_reg_inst()
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p = Derived()
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p.addChildKeepAlive(m.Child())
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assert ConstructorStats.detail_reg_inst() == n_inst + 2
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lst = [p]
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lst.append(lst) # creates a circular reference
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with capture:
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del p, lst
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == """
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Releasing parent.
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Releasing child.
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"""
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def test_alive_gc_multi_derived(capture):
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class Derived(m.Parent, m.Child):
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def __init__(self):
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m.Parent.__init__(self)
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m.Child.__init__(self)
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n_inst = ConstructorStats.detail_reg_inst()
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p = Derived()
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p.addChildKeepAlive(m.Child())
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# +3 rather than +2 because Derived corresponds to two registered instances
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assert ConstructorStats.detail_reg_inst() == n_inst + 3
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lst = [p]
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lst.append(lst) # creates a circular reference
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with capture:
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del p, lst
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == """
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Releasing parent.
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Releasing child.
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Releasing child.
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"""
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def test_return_none(capture):
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n_inst = ConstructorStats.detail_reg_inst()
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with capture:
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p = m.Parent()
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assert capture == "Allocating parent."
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with capture:
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p.returnNullChildKeepAliveChild()
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assert ConstructorStats.detail_reg_inst() == n_inst + 1
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assert capture == ""
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with capture:
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del p
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == "Releasing parent."
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with capture:
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p = m.Parent()
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assert capture == "Allocating parent."
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with capture:
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p.returnNullChildKeepAliveParent()
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assert ConstructorStats.detail_reg_inst() == n_inst + 1
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assert capture == ""
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with capture:
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del p
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == "Releasing parent."
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def test_keep_alive_constructor(capture):
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n_inst = ConstructorStats.detail_reg_inst()
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with capture:
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p = m.Parent(m.Child())
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assert ConstructorStats.detail_reg_inst() == n_inst + 2
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assert capture == """
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Allocating child.
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Allocating parent.
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"""
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with capture:
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del p
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assert ConstructorStats.detail_reg_inst() == n_inst
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assert capture == """
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Releasing parent.
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Releasing child.
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"""
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def test_call_guard():
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assert m.unguarded_call() == "unguarded"
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assert m.guarded_call() == "guarded"
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assert m.multiple_guards_correct_order() == "guarded & guarded"
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assert m.multiple_guards_wrong_order() == "unguarded & guarded"
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if hasattr(m, "with_gil"):
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assert m.with_gil() == "GIL held"
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assert m.without_gil() == "GIL released"
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