1 files changed, 286 insertions, 0 deletions
diff --git a/3rdparty/pybind11/tests/test_smart_ptr.py b/3rdparty/pybind11/tests/test_smart_ptr.py
new file mode 100644
index 00000000..c6627043
--- /dev/null
+++ b/3rdparty/pybind11/tests/test_smart_ptr.py
@@ -0,0 +1,286 @@
+import pytest
+from pybind11_tests import smart_ptr as m
+from pybind11_tests import ConstructorStats
+
+
+def test_smart_ptr(capture):
+    # Object1
+    for i, o in enumerate([m.make_object_1(), m.make_object_2(), m.MyObject1(3)], start=1):
+        assert o.getRefCount() == 1
+        with capture:
+            m.print_object_1(o)
+            m.print_object_2(o)
+            m.print_object_3(o)
+            m.print_object_4(o)
+        assert capture == "MyObject1[{i}]\n".format(i=i) * 4
+
+    for i, o in enumerate([m.make_myobject1_1(), m.make_myobject1_2(), m.MyObject1(6), 7],
+                          start=4):
+        print(o)
+        with capture:
+            if not isinstance(o, int):
+                m.print_object_1(o)
+                m.print_object_2(o)
+                m.print_object_3(o)
+                m.print_object_4(o)
+            m.print_myobject1_1(o)
+            m.print_myobject1_2(o)
+            m.print_myobject1_3(o)
+            m.print_myobject1_4(o)
+        assert capture == "MyObject1[{i}]\n".format(i=i) * (4 if isinstance(o, int) else 8)
+
+    cstats = ConstructorStats.get(m.MyObject1)
+    assert cstats.alive() == 0
+    expected_values = ['MyObject1[{}]'.format(i) for i in range(1, 7)] + ['MyObject1[7]'] * 4
+    assert cstats.values() == expected_values
+    assert cstats.default_constructions == 0
+    assert cstats.copy_constructions == 0
+    # assert cstats.move_constructions >= 0 # Doesn't invoke any
+    assert cstats.copy_assignments == 0
+    assert cstats.move_assignments == 0
+
+    # Object2
+    for i, o in zip([8, 6, 7], [m.MyObject2(8), m.make_myobject2_1(), m.make_myobject2_2()]):
+        print(o)
+        with capture:
+            m.print_myobject2_1(o)
+            m.print_myobject2_2(o)
+            m.print_myobject2_3(o)
+            m.print_myobject2_4(o)
+        assert capture == "MyObject2[{i}]\n".format(i=i) * 4
+
+    cstats = ConstructorStats.get(m.MyObject2)
+    assert cstats.alive() == 1
+    o = None
+    assert cstats.alive() == 0
+    assert cstats.values() == ['MyObject2[8]', 'MyObject2[6]', 'MyObject2[7]']
+    assert cstats.default_constructions == 0
+    assert cstats.copy_constructions == 0
+    # assert cstats.move_constructions >= 0 # Doesn't invoke any
+    assert cstats.copy_assignments == 0
+    assert cstats.move_assignments == 0
+
+    # Object3
+    for i, o in zip([9, 8, 9], [m.MyObject3(9), m.make_myobject3_1(), m.make_myobject3_2()]):
+        print(o)
+        with capture:
+            m.print_myobject3_1(o)
+            m.print_myobject3_2(o)
+            m.print_myobject3_3(o)
+            m.print_myobject3_4(o)
+        assert capture == "MyObject3[{i}]\n".format(i=i) * 4
+
+    cstats = ConstructorStats.get(m.MyObject3)
+    assert cstats.alive() == 1
+    o = None
+    assert cstats.alive() == 0
+    assert cstats.values() == ['MyObject3[9]', 'MyObject3[8]', 'MyObject3[9]']
+    assert cstats.default_constructions == 0
+    assert cstats.copy_constructions == 0
+    # assert cstats.move_constructions >= 0 # Doesn't invoke any
+    assert cstats.copy_assignments == 0
+    assert cstats.move_assignments == 0
+
+    # Object
+    cstats = ConstructorStats.get(m.Object)
+    assert cstats.alive() == 0
+    assert cstats.values() == []
+    assert cstats.default_constructions == 10
+    assert cstats.copy_constructions == 0
+    # assert cstats.move_constructions >= 0 # Doesn't invoke any
+    assert cstats.copy_assignments == 0
+    assert cstats.move_assignments == 0
+
+    # ref<>
+    cstats = m.cstats_ref()
+    assert cstats.alive() == 0
+    assert cstats.values() == ['from pointer'] * 10
+    assert cstats.default_constructions == 30
+    assert cstats.copy_constructions == 12
+    # assert cstats.move_constructions >= 0 # Doesn't invoke any
+    assert cstats.copy_assignments == 30
+    assert cstats.move_assignments == 0
+
+
+def test_smart_ptr_refcounting():
+    assert m.test_object1_refcounting()
+
+
+def test_unique_nodelete():
+    o = m.MyObject4(23)
+    assert o.value == 23
+    cstats = ConstructorStats.get(m.MyObject4)
+    assert cstats.alive() == 1
+    del o
+    assert cstats.alive() == 1  # Leak, but that's intentional
+
+
+def test_unique_nodelete4a():
+    o = m.MyObject4a(23)
+    assert o.value == 23
+    cstats = ConstructorStats.get(m.MyObject4a)
+    assert cstats.alive() == 1
+    del o
+    assert cstats.alive() == 1  # Leak, but that's intentional
+
+
+def test_unique_deleter():
+    o = m.MyObject4b(23)
+    assert o.value == 23
+    cstats4a = ConstructorStats.get(m.MyObject4a)
+    assert cstats4a.alive() == 2  # Two because of previous test
+    cstats4b = ConstructorStats.get(m.MyObject4b)
+    assert cstats4b.alive() == 1
+    del o
+    assert cstats4a.alive() == 1  # Should now only be one leftover from previous test
+    assert cstats4b.alive() == 0  # Should be deleted
+
+
+def test_large_holder():
+    o = m.MyObject5(5)
+    assert o.value == 5
+    cstats = ConstructorStats.get(m.MyObject5)
+    assert cstats.alive() == 1
+    del o
+    assert cstats.alive() == 0
+
+
+def test_shared_ptr_and_references():
+    s = m.SharedPtrRef()
+    stats = ConstructorStats.get(m.A)
+    assert stats.alive() == 2
+
+    ref = s.ref  # init_holder_helper(holder_ptr=false, owned=false)
+    assert stats.alive() == 2
+    assert s.set_ref(ref)
+    with pytest.raises(RuntimeError) as excinfo:
+        assert s.set_holder(ref)
+    assert "Unable to cast from non-held to held instance" in str(excinfo.value)
+
+    copy = s.copy  # init_holder_helper(holder_ptr=false, owned=true)
+    assert stats.alive() == 3
+    assert s.set_ref(copy)
+    assert s.set_holder(copy)
+
+    holder_ref = s.holder_ref  # init_holder_helper(holder_ptr=true, owned=false)
+    assert stats.alive() == 3
+    assert s.set_ref(holder_ref)
+    assert s.set_holder(holder_ref)
+
+    holder_copy = s.holder_copy  # init_holder_helper(holder_ptr=true, owned=true)
+    assert stats.alive() == 3
+    assert s.set_ref(holder_copy)
+    assert s.set_holder(holder_copy)
+
+    del ref, copy, holder_ref, holder_copy, s
+    assert stats.alive() == 0
+
+
+def test_shared_ptr_from_this_and_references():
+    s = m.SharedFromThisRef()
+    stats = ConstructorStats.get(m.B)
+    assert stats.alive() == 2
+
+    ref = s.ref  # init_holder_helper(holder_ptr=false, owned=false, bad_wp=false)
+    assert stats.alive() == 2
+    assert s.set_ref(ref)
+    assert s.set_holder(ref)  # std::enable_shared_from_this can create a holder from a reference
+
+    bad_wp = s.bad_wp  # init_holder_helper(holder_ptr=false, owned=false, bad_wp=true)
+    assert stats.alive() == 2
+    assert s.set_ref(bad_wp)
+    with pytest.raises(RuntimeError) as excinfo:
+        assert s.set_holder(bad_wp)
+    assert "Unable to cast from non-held to held instance" in str(excinfo.value)
+
+    copy = s.copy  # init_holder_helper(holder_ptr=false, owned=true, bad_wp=false)
+    assert stats.alive() == 3
+    assert s.set_ref(copy)
+    assert s.set_holder(copy)
+
+    holder_ref = s.holder_ref  # init_holder_helper(holder_ptr=true, owned=false, bad_wp=false)
+    assert stats.alive() == 3
+    assert s.set_ref(holder_ref)
+    assert s.set_holder(holder_ref)
+
+    holder_copy = s.holder_copy  # init_holder_helper(holder_ptr=true, owned=true, bad_wp=false)
+    assert stats.alive() == 3
+    assert s.set_ref(holder_copy)
+    assert s.set_holder(holder_copy)
+
+    del ref, bad_wp, copy, holder_ref, holder_copy, s
+    assert stats.alive() == 0
+
+    z = m.SharedFromThisVirt.get()
+    y = m.SharedFromThisVirt.get()
+    assert y is z
+
+
+def test_move_only_holder():
+    a = m.TypeWithMoveOnlyHolder.make()
+    stats = ConstructorStats.get(m.TypeWithMoveOnlyHolder)
+    assert stats.alive() == 1
+    del a
+    assert stats.alive() == 0
+
+
+def test_holder_with_addressof_operator():
+    # this test must not throw exception from c++
+    a = m.TypeForHolderWithAddressOf.make()
+    a.print_object_1()
+    a.print_object_2()
+    a.print_object_3()
+    a.print_object_4()
+
+    stats = ConstructorStats.get(m.TypeForHolderWithAddressOf)
+    assert stats.alive() == 1
+
+    np = m.TypeForHolderWithAddressOf.make()
+    assert stats.alive() == 2
+    del a
+    assert stats.alive() == 1
+    del np
+    assert stats.alive() == 0
+
+    b = m.TypeForHolderWithAddressOf.make()
+    c = b
+    assert b.get() is c.get()
+    assert stats.alive() == 1
+
+    del b
+    assert stats.alive() == 1
+
+    del c
+    assert stats.alive() == 0
+
+
+def test_move_only_holder_with_addressof_operator():
+    a = m.TypeForMoveOnlyHolderWithAddressOf.make()
+    a.print_object()
+
+    stats = ConstructorStats.get(m.TypeForMoveOnlyHolderWithAddressOf)
+    assert stats.alive() == 1
+
+    a.value = 42
+    assert a.value == 42
+
+    del a
+    assert stats.alive() == 0
+
+
+def test_smart_ptr_from_default():
+    instance = m.HeldByDefaultHolder()
+    with pytest.raises(RuntimeError) as excinfo:
+        m.HeldByDefaultHolder.load_shared_ptr(instance)
+    assert "Unable to load a custom holder type from a " \
+           "default-holder instance" in str(excinfo.value)
+
+
+def test_shared_ptr_gc():
+    """#187: issue involving std::shared_ptr<> return value policy & garbage collection"""
+    el = m.ElementList()
+    for i in range(10):
+        el.add(m.ElementA(i))
+    pytest.gc_collect()
+    for i, v in enumerate(el.get()):
+        assert i == v.value()