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391c75447d
This udpates all the remaining tests to the new test suite code and comment styles started in #898. For the most part, the test coverage here is unchanged, with a few minor exceptions as noted below. - test_constants_and_functions: this adds more overload tests with overloads with different number of arguments for more comprehensive overload_cast testing. The test style conversion broke the overload tests under MSVC 2015, prompting the additional tests while looking for a workaround. - test_eigen: this dropped the unused functions `get_cm_corners` and `get_cm_corners_const`--these same tests were duplicates of the same things provided (and used) via ReturnTester methods. - test_opaque_types: this test had a hidden dependence on ExampleMandA which is now fixed by using the global UserType which suffices for the relevant test. - test_methods_and_attributes: this required some additions to UserType to make it usable as a replacement for the test's previous SimpleType: UserType gained a value mutator, and the `value` property is not mutable (it was previously readonly). Some overload tests were also added to better test overload_cast (as described above). - test_numpy_array: removed the untemplated mutate_data/mutate_data_t: the templated versions with an empty parameter pack expand to the same thing. - test_stl: this was already mostly in the new style; this just tweaks things a bit, localizing a class, and adding some missing `// test_whatever` comments. - test_virtual_functions: like `test_stl`, this was mostly in the new test style already, but needed some `// test_whatever` comments. This commit also moves the inherited virtual example code to the end of the file, after the main set of tests (since it is less important than the other tests, and rather length); it also got renamed to `test_inherited_virtuals` (from `test_inheriting_repeat`) because it tests both inherited virtual approaches, not just the repeat approach.
221 lines
7.4 KiB
Python
221 lines
7.4 KiB
Python
import pytest
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from pybind11_tests import smart_ptr as m
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from pybind11_tests import ConstructorStats
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def test_smart_ptr(capture):
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# Object1
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for i, o in enumerate([m.make_object_1(), m.make_object_2(), m.MyObject1(3)], start=1):
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assert o.getRefCount() == 1
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with capture:
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m.print_object_1(o)
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m.print_object_2(o)
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m.print_object_3(o)
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m.print_object_4(o)
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assert capture == "MyObject1[{i}]\n".format(i=i) * 4
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for i, o in enumerate([m.make_myobject1_1(), m.make_myobject1_2(), m.MyObject1(6), 7],
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start=4):
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print(o)
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with capture:
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if not isinstance(o, int):
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m.print_object_1(o)
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m.print_object_2(o)
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m.print_object_3(o)
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m.print_object_4(o)
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m.print_myobject1_1(o)
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m.print_myobject1_2(o)
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m.print_myobject1_3(o)
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m.print_myobject1_4(o)
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assert capture == "MyObject1[{i}]\n".format(i=i) * (4 if isinstance(o, int) else 8)
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cstats = ConstructorStats.get(m.MyObject1)
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assert cstats.alive() == 0
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expected_values = ['MyObject1[{}]'.format(i) for i in range(1, 7)] + ['MyObject1[7]'] * 4
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assert cstats.values() == expected_values
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assert cstats.default_constructions == 0
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assert cstats.copy_constructions == 0
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# assert cstats.move_constructions >= 0 # Doesn't invoke any
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assert cstats.copy_assignments == 0
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assert cstats.move_assignments == 0
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# Object2
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for i, o in zip([8, 6, 7], [m.MyObject2(8), m.make_myobject2_1(), m.make_myobject2_2()]):
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print(o)
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with capture:
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m.print_myobject2_1(o)
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m.print_myobject2_2(o)
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m.print_myobject2_3(o)
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m.print_myobject2_4(o)
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assert capture == "MyObject2[{i}]\n".format(i=i) * 4
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cstats = ConstructorStats.get(m.MyObject2)
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assert cstats.alive() == 1
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o = None
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assert cstats.alive() == 0
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assert cstats.values() == ['MyObject2[8]', 'MyObject2[6]', 'MyObject2[7]']
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assert cstats.default_constructions == 0
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assert cstats.copy_constructions == 0
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# assert cstats.move_constructions >= 0 # Doesn't invoke any
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assert cstats.copy_assignments == 0
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assert cstats.move_assignments == 0
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# Object3
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for i, o in zip([9, 8, 9], [m.MyObject3(9), m.make_myobject3_1(), m.make_myobject3_2()]):
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print(o)
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with capture:
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m.print_myobject3_1(o)
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m.print_myobject3_2(o)
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m.print_myobject3_3(o)
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m.print_myobject3_4(o)
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assert capture == "MyObject3[{i}]\n".format(i=i) * 4
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cstats = ConstructorStats.get(m.MyObject3)
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assert cstats.alive() == 1
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o = None
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assert cstats.alive() == 0
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assert cstats.values() == ['MyObject3[9]', 'MyObject3[8]', 'MyObject3[9]']
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assert cstats.default_constructions == 0
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assert cstats.copy_constructions == 0
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# assert cstats.move_constructions >= 0 # Doesn't invoke any
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assert cstats.copy_assignments == 0
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assert cstats.move_assignments == 0
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# Object
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cstats = ConstructorStats.get(m.Object)
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assert cstats.alive() == 0
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assert cstats.values() == []
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assert cstats.default_constructions == 10
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assert cstats.copy_constructions == 0
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# assert cstats.move_constructions >= 0 # Doesn't invoke any
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assert cstats.copy_assignments == 0
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assert cstats.move_assignments == 0
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# ref<>
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cstats = m.cstats_ref()
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assert cstats.alive() == 0
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assert cstats.values() == ['from pointer'] * 10
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assert cstats.default_constructions == 30
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assert cstats.copy_constructions == 12
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# assert cstats.move_constructions >= 0 # Doesn't invoke any
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assert cstats.copy_assignments == 30
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assert cstats.move_assignments == 0
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def test_smart_ptr_refcounting():
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assert m.test_object1_refcounting()
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def test_unique_nodelete():
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o = m.MyObject4(23)
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assert o.value == 23
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cstats = ConstructorStats.get(m.MyObject4)
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assert cstats.alive() == 1
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del o
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assert cstats.alive() == 1 # Leak, but that's intentional
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def test_large_holder():
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o = m.MyObject5(5)
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assert o.value == 5
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cstats = ConstructorStats.get(m.MyObject5)
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assert cstats.alive() == 1
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del o
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assert cstats.alive() == 0
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def test_shared_ptr_and_references():
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s = m.SharedPtrRef()
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stats = ConstructorStats.get(m.A)
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assert stats.alive() == 2
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ref = s.ref # init_holder_helper(holder_ptr=false, owned=false)
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assert stats.alive() == 2
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assert s.set_ref(ref)
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with pytest.raises(RuntimeError) as excinfo:
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assert s.set_holder(ref)
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assert "Unable to cast from non-held to held instance" in str(excinfo.value)
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copy = s.copy # init_holder_helper(holder_ptr=false, owned=true)
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assert stats.alive() == 3
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assert s.set_ref(copy)
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assert s.set_holder(copy)
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holder_ref = s.holder_ref # init_holder_helper(holder_ptr=true, owned=false)
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assert stats.alive() == 3
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assert s.set_ref(holder_ref)
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assert s.set_holder(holder_ref)
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holder_copy = s.holder_copy # init_holder_helper(holder_ptr=true, owned=true)
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assert stats.alive() == 3
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assert s.set_ref(holder_copy)
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assert s.set_holder(holder_copy)
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del ref, copy, holder_ref, holder_copy, s
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assert stats.alive() == 0
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def test_shared_ptr_from_this_and_references():
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s = m.SharedFromThisRef()
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stats = ConstructorStats.get(m.B)
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assert stats.alive() == 2
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ref = s.ref # init_holder_helper(holder_ptr=false, owned=false, bad_wp=false)
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assert stats.alive() == 2
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assert s.set_ref(ref)
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assert s.set_holder(ref) # std::enable_shared_from_this can create a holder from a reference
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bad_wp = s.bad_wp # init_holder_helper(holder_ptr=false, owned=false, bad_wp=true)
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assert stats.alive() == 2
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assert s.set_ref(bad_wp)
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with pytest.raises(RuntimeError) as excinfo:
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assert s.set_holder(bad_wp)
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assert "Unable to cast from non-held to held instance" in str(excinfo.value)
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copy = s.copy # init_holder_helper(holder_ptr=false, owned=true, bad_wp=false)
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assert stats.alive() == 3
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assert s.set_ref(copy)
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assert s.set_holder(copy)
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holder_ref = s.holder_ref # init_holder_helper(holder_ptr=true, owned=false, bad_wp=false)
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assert stats.alive() == 3
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assert s.set_ref(holder_ref)
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assert s.set_holder(holder_ref)
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holder_copy = s.holder_copy # init_holder_helper(holder_ptr=true, owned=true, bad_wp=false)
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assert stats.alive() == 3
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assert s.set_ref(holder_copy)
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assert s.set_holder(holder_copy)
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del ref, bad_wp, copy, holder_ref, holder_copy, s
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assert stats.alive() == 0
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z = m.SharedFromThisVirt.get()
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y = m.SharedFromThisVirt.get()
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assert y is z
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def test_move_only_holder():
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a = m.TypeWithMoveOnlyHolder.make()
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stats = ConstructorStats.get(m.TypeWithMoveOnlyHolder)
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assert stats.alive() == 1
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del a
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assert stats.alive() == 0
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def test_smart_ptr_from_default():
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instance = m.HeldByDefaultHolder()
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with pytest.raises(RuntimeError) as excinfo:
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m.HeldByDefaultHolder.load_shared_ptr(instance)
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assert "Unable to load a custom holder type from a default-holder instance" in str(excinfo)
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def test_shared_ptr_gc():
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"""#187: issue involving std::shared_ptr<> return value policy & garbage collection"""
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el = m.ElementList()
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for i in range(10):
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el.add(m.ElementA(i))
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pytest.gc_collect()
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for i, v in enumerate(el.get()):
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assert i == v.value()
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