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384 lines
12 KiB
Python
384 lines
12 KiB
Python
from __future__ import annotations
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import pytest
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from pybind11_tests import ConstructorStats, UserType
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from pybind11_tests import stl as m
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def test_vector(doc):
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"""std::vector <-> list"""
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lst = m.cast_vector()
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assert lst == [1]
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lst.append(2)
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assert m.load_vector(lst)
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assert m.load_vector(tuple(lst))
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assert m.cast_bool_vector() == [True, False]
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assert m.load_bool_vector([True, False])
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assert m.load_bool_vector((True, False))
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assert doc(m.cast_vector) == "cast_vector() -> list[int]"
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assert doc(m.load_vector) == "load_vector(arg0: list[int]) -> bool"
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# Test regression caused by 936: pointers to stl containers weren't castable
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assert m.cast_ptr_vector() == ["lvalue", "lvalue"]
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def test_deque():
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"""std::deque <-> list"""
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lst = m.cast_deque()
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assert lst == [1]
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lst.append(2)
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assert m.load_deque(lst)
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assert m.load_deque(tuple(lst))
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def test_array(doc):
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"""std::array <-> list"""
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lst = m.cast_array()
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assert lst == [1, 2]
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assert m.load_array(lst)
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assert m.load_array(tuple(lst))
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assert doc(m.cast_array) == "cast_array() -> Annotated[list[int], FixedSize(2)]"
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assert (
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doc(m.load_array)
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== "load_array(arg0: Annotated[list[int], FixedSize(2)]) -> bool"
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)
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def test_valarray(doc):
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"""std::valarray <-> list"""
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lst = m.cast_valarray()
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assert lst == [1, 4, 9]
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assert m.load_valarray(lst)
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assert m.load_valarray(tuple(lst))
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assert doc(m.cast_valarray) == "cast_valarray() -> list[int]"
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assert doc(m.load_valarray) == "load_valarray(arg0: list[int]) -> bool"
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def test_map(doc):
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"""std::map <-> dict"""
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d = m.cast_map()
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assert d == {"key": "value"}
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assert "key" in d
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d["key2"] = "value2"
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assert "key2" in d
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assert m.load_map(d)
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assert doc(m.cast_map) == "cast_map() -> dict[str, str]"
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assert doc(m.load_map) == "load_map(arg0: dict[str, str]) -> bool"
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def test_set(doc):
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"""std::set <-> set"""
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s = m.cast_set()
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assert s == {"key1", "key2"}
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s.add("key3")
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assert m.load_set(s)
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assert m.load_set(frozenset(s))
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assert doc(m.cast_set) == "cast_set() -> set[str]"
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assert doc(m.load_set) == "load_set(arg0: set[str]) -> bool"
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def test_recursive_casting():
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"""Tests that stl casters preserve lvalue/rvalue context for container values"""
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assert m.cast_rv_vector() == ["rvalue", "rvalue"]
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assert m.cast_lv_vector() == ["lvalue", "lvalue"]
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assert m.cast_rv_array() == ["rvalue", "rvalue", "rvalue"]
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assert m.cast_lv_array() == ["lvalue", "lvalue"]
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assert m.cast_rv_map() == {"a": "rvalue"}
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assert m.cast_lv_map() == {"a": "lvalue", "b": "lvalue"}
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assert m.cast_rv_nested() == [[[{"b": "rvalue", "c": "rvalue"}], [{"a": "rvalue"}]]]
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assert m.cast_lv_nested() == {
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"a": [[["lvalue", "lvalue"]], [["lvalue", "lvalue"]]],
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"b": [[["lvalue", "lvalue"], ["lvalue", "lvalue"]]],
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}
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# Issue #853 test case:
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z = m.cast_unique_ptr_vector()
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assert z[0].value == 7
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assert z[1].value == 42
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def test_move_out_container():
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"""Properties use the `reference_internal` policy by default. If the underlying function
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returns an rvalue, the policy is automatically changed to `move` to avoid referencing
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a temporary. In case the return value is a container of user-defined types, the policy
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also needs to be applied to the elements, not just the container."""
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c = m.MoveOutContainer()
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moved_out_list = c.move_list
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assert [x.value for x in moved_out_list] == [0, 1, 2]
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@pytest.mark.skipif(not hasattr(m, "has_optional"), reason="no <optional>")
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def test_optional():
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assert m.double_or_zero(None) == 0
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assert m.double_or_zero(42) == 84
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pytest.raises(TypeError, m.double_or_zero, "foo")
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assert m.half_or_none(0) is None
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assert m.half_or_none(42) == 21
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pytest.raises(TypeError, m.half_or_none, "foo")
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assert m.test_nullopt() == 42
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assert m.test_nullopt(None) == 42
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assert m.test_nullopt(42) == 42
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assert m.test_nullopt(43) == 43
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assert m.test_no_assign() == 42
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assert m.test_no_assign(None) == 42
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assert m.test_no_assign(m.NoAssign(43)) == 43
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pytest.raises(TypeError, m.test_no_assign, 43)
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assert m.nodefer_none_optional(None)
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holder = m.OptionalHolder()
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mvalue = holder.member
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assert mvalue.initialized
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assert holder.member_initialized()
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props = m.OptionalProperties()
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assert int(props.access_by_ref) == 42
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assert int(props.access_by_copy) == 42
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@pytest.mark.skipif(
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not hasattr(m, "has_exp_optional"), reason="no <experimental/optional>"
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)
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def test_exp_optional():
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assert m.double_or_zero_exp(None) == 0
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assert m.double_or_zero_exp(42) == 84
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pytest.raises(TypeError, m.double_or_zero_exp, "foo")
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assert m.half_or_none_exp(0) is None
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assert m.half_or_none_exp(42) == 21
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pytest.raises(TypeError, m.half_or_none_exp, "foo")
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assert m.test_nullopt_exp() == 42
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assert m.test_nullopt_exp(None) == 42
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assert m.test_nullopt_exp(42) == 42
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assert m.test_nullopt_exp(43) == 43
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assert m.test_no_assign_exp() == 42
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assert m.test_no_assign_exp(None) == 42
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assert m.test_no_assign_exp(m.NoAssign(43)) == 43
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pytest.raises(TypeError, m.test_no_assign_exp, 43)
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holder = m.OptionalExpHolder()
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mvalue = holder.member
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assert mvalue.initialized
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assert holder.member_initialized()
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props = m.OptionalExpProperties()
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assert int(props.access_by_ref) == 42
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assert int(props.access_by_copy) == 42
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@pytest.mark.skipif(not hasattr(m, "has_boost_optional"), reason="no <boost/optional>")
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def test_boost_optional():
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assert m.double_or_zero_boost(None) == 0
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assert m.double_or_zero_boost(42) == 84
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pytest.raises(TypeError, m.double_or_zero_boost, "foo")
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assert m.half_or_none_boost(0) is None
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assert m.half_or_none_boost(42) == 21
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pytest.raises(TypeError, m.half_or_none_boost, "foo")
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assert m.test_nullopt_boost() == 42
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assert m.test_nullopt_boost(None) == 42
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assert m.test_nullopt_boost(42) == 42
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assert m.test_nullopt_boost(43) == 43
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assert m.test_no_assign_boost() == 42
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assert m.test_no_assign_boost(None) == 42
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assert m.test_no_assign_boost(m.NoAssign(43)) == 43
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pytest.raises(TypeError, m.test_no_assign_boost, 43)
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holder = m.OptionalBoostHolder()
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mvalue = holder.member
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assert mvalue.initialized
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assert holder.member_initialized()
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props = m.OptionalBoostProperties()
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assert int(props.access_by_ref) == 42
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assert int(props.access_by_copy) == 42
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def test_reference_sensitive_optional():
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assert m.double_or_zero_refsensitive(None) == 0
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assert m.double_or_zero_refsensitive(42) == 84
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pytest.raises(TypeError, m.double_or_zero_refsensitive, "foo")
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assert m.half_or_none_refsensitive(0) is None
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assert m.half_or_none_refsensitive(42) == 21
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pytest.raises(TypeError, m.half_or_none_refsensitive, "foo")
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assert m.test_nullopt_refsensitive() == 42
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assert m.test_nullopt_refsensitive(None) == 42
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assert m.test_nullopt_refsensitive(42) == 42
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assert m.test_nullopt_refsensitive(43) == 43
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assert m.test_no_assign_refsensitive() == 42
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assert m.test_no_assign_refsensitive(None) == 42
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assert m.test_no_assign_refsensitive(m.NoAssign(43)) == 43
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pytest.raises(TypeError, m.test_no_assign_refsensitive, 43)
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holder = m.OptionalRefSensitiveHolder()
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mvalue = holder.member
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assert mvalue.initialized
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assert holder.member_initialized()
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props = m.OptionalRefSensitiveProperties()
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assert int(props.access_by_ref) == 42
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assert int(props.access_by_copy) == 42
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@pytest.mark.skipif(not hasattr(m, "has_filesystem"), reason="no <filesystem>")
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def test_fs_path():
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from pathlib import Path
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class PseudoStrPath:
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def __fspath__(self):
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return "foo/bar"
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class PseudoBytesPath:
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def __fspath__(self):
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return b"foo/bar"
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assert m.parent_path(Path("foo/bar")) == Path("foo")
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assert m.parent_path("foo/bar") == Path("foo")
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assert m.parent_path(b"foo/bar") == Path("foo")
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assert m.parent_path(PseudoStrPath()) == Path("foo")
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assert m.parent_path(PseudoBytesPath()) == Path("foo")
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@pytest.mark.skipif(not hasattr(m, "load_variant"), reason="no <variant>")
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def test_variant(doc):
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assert m.load_variant(1) == "int"
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assert m.load_variant("1") == "std::string"
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assert m.load_variant(1.0) == "double"
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assert m.load_variant(None) == "std::nullptr_t"
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assert m.load_variant_2pass(1) == "int"
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assert m.load_variant_2pass(1.0) == "double"
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assert m.cast_variant() == (5, "Hello")
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assert (
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doc(m.load_variant) == "load_variant(arg0: Union[int, str, float, None]) -> str"
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)
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@pytest.mark.skipif(
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not hasattr(m, "load_monostate_variant"), reason="no std::monostate"
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)
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def test_variant_monostate(doc):
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assert m.load_monostate_variant(None) == "std::monostate"
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assert m.load_monostate_variant(1) == "int"
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assert m.load_monostate_variant("1") == "std::string"
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assert m.cast_monostate_variant() == (None, 5, "Hello")
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assert (
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doc(m.load_monostate_variant)
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== "load_monostate_variant(arg0: Union[None, int, str]) -> str"
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)
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def test_vec_of_reference_wrapper():
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"""#171: Can't return reference wrappers (or STL structures containing them)"""
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assert (
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str(m.return_vec_of_reference_wrapper(UserType(4)))
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== "[UserType(1), UserType(2), UserType(3), UserType(4)]"
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)
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def test_stl_pass_by_pointer(msg):
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"""Passing nullptr or None to an STL container pointer is not expected to work"""
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with pytest.raises(TypeError) as excinfo:
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m.stl_pass_by_pointer() # default value is `nullptr`
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assert (
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msg(excinfo.value)
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== """
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stl_pass_by_pointer(): incompatible function arguments. The following argument types are supported:
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1. (v: list[int] = None) -> list[int]
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Invoked with:
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"""
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)
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with pytest.raises(TypeError) as excinfo:
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m.stl_pass_by_pointer(None)
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assert (
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msg(excinfo.value)
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== """
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stl_pass_by_pointer(): incompatible function arguments. The following argument types are supported:
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1. (v: list[int] = None) -> list[int]
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Invoked with: None
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"""
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)
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assert m.stl_pass_by_pointer([1, 2, 3]) == [1, 2, 3]
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def test_missing_header_message():
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"""Trying convert `list` to a `std::vector`, or vice versa, without including
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<pybind11/stl.h> should result in a helpful suggestion in the error message"""
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import pybind11_cross_module_tests as cm
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expected_message = (
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"Did you forget to `#include <pybind11/stl.h>`? Or <pybind11/complex.h>,\n"
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"<pybind11/functional.h>, <pybind11/chrono.h>, etc. Some automatic\n"
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"conversions are optional and require extra headers to be included\n"
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"when compiling your pybind11 module."
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)
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with pytest.raises(TypeError) as excinfo:
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cm.missing_header_arg([1.0, 2.0, 3.0])
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assert expected_message in str(excinfo.value)
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with pytest.raises(TypeError) as excinfo:
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cm.missing_header_return()
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assert expected_message in str(excinfo.value)
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def test_function_with_string_and_vector_string_arg():
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"""Check if a string is NOT implicitly converted to a list, which was the
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behavior before fix of issue #1258"""
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assert m.func_with_string_or_vector_string_arg_overload(("A", "B")) == 2
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assert m.func_with_string_or_vector_string_arg_overload(["A", "B"]) == 2
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assert m.func_with_string_or_vector_string_arg_overload("A") == 3
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def test_stl_ownership():
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cstats = ConstructorStats.get(m.Placeholder)
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assert cstats.alive() == 0
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r = m.test_stl_ownership()
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assert len(r) == 1
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del r
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assert cstats.alive() == 0
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def test_array_cast_sequence():
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assert m.array_cast_sequence((1, 2, 3)) == [1, 2, 3]
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def test_issue_1561():
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"""check fix for issue #1561"""
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bar = m.Issue1561Outer()
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bar.list = [m.Issue1561Inner("bar")]
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assert bar.list
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assert bar.list[0].data == "bar"
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def test_return_vector_bool_raw_ptr():
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# Add `while True:` for manual leak checking.
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v = m.return_vector_bool_raw_ptr()
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assert isinstance(v, list)
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assert len(v) == 4513
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