1 from __future__
import annotations
5 from pybind11_tests
import copy_move_policies
as m
9 with pytest.raises(RuntimeError)
as excinfo:
10 m.lacking_copy_ctor.get_one()
11 assert "is non-copyable!" in str(excinfo.value)
15 with pytest.raises(RuntimeError)
as excinfo:
16 m.lacking_move_ctor.get_one()
17 assert "is neither movable nor copyable!" in str(excinfo.value)
21 """Cast some values in C++ via custom type casters and count the number of moves/copies."""
23 cstats = m.move_and_copy_cstats()
25 cstats[
"MoveOnlyInt"],
26 cstats[
"MoveOrCopyInt"],
27 cstats[
"CopyOnlyInt"],
33 assert m.move_and_copy_casts(3) == 18
34 assert c_m.copy_assignments + c_m.copy_constructions == 0
35 assert c_m.move_assignments == 2
36 assert c_m.move_constructions >= 2
37 assert c_mc.alive() == 0
38 assert c_mc.copy_assignments + c_mc.copy_constructions == 0
39 assert c_mc.move_assignments == 2
40 assert c_mc.move_constructions >= 2
41 assert c_c.alive() == 0
42 assert c_c.copy_assignments == 2
43 assert c_c.copy_constructions >= 2
44 assert c_m.alive() + c_mc.alive() + c_c.alive() == 0
48 """Call some functions that load arguments via custom type casters and count the number of
51 cstats = m.move_and_copy_cstats()
53 cstats[
"MoveOnlyInt"],
54 cstats[
"MoveOrCopyInt"],
55 cstats[
"CopyOnlyInt"],
58 assert m.move_only(10) == 10
59 assert m.move_or_copy(11) == 11
60 assert m.copy_only(12) == 12
61 assert m.move_pair((13, 14)) == 27
62 assert m.move_tuple((15, 16, 17)) == 48
63 assert m.copy_tuple((18, 19)) == 37
66 assert m.move_copy_nested((1, ((2, 3, (4,)), 5))) == 15
68 assert c_m.copy_assignments + c_m.copy_constructions == 0
69 assert c_m.move_assignments == 6
70 assert c_m.move_constructions == 9
71 assert c_mc.copy_assignments + c_mc.copy_constructions == 0
72 assert c_mc.move_assignments == 5
73 assert c_mc.move_constructions == 8
74 assert c_c.copy_assignments == 4
75 assert c_c.copy_constructions == 6
76 assert c_m.alive() + c_mc.alive() + c_c.alive() == 0
79 @pytest.mark.skipif(
not m.has_optional, reason=
"no <optional>")
81 """Tests move/copy loads of std::optional arguments"""
83 cstats = m.move_and_copy_cstats()
85 cstats[
"MoveOnlyInt"],
86 cstats[
"MoveOrCopyInt"],
87 cstats[
"CopyOnlyInt"],
92 assert m.move_optional(10) == 10
93 assert m.move_or_copy_optional(11) == 11
94 assert m.copy_optional(12) == 12
98 assert m.move_optional_tuple((3, 4, 5)) == 12
100 assert c_m.copy_assignments + c_m.copy_constructions == 0
101 assert c_m.move_assignments == 2
102 assert c_m.move_constructions == 5
103 assert c_mc.copy_assignments + c_mc.copy_constructions == 0
104 assert c_mc.move_assignments == 2
105 assert c_mc.move_constructions == 5
106 assert c_c.copy_assignments == 2
107 assert c_c.copy_constructions == 5
108 assert c_m.alive() + c_mc.alive() + c_c.alive() == 0
112 """An object with a private `operator new` cannot be returned by value"""
114 with pytest.raises(RuntimeError)
as excinfo:
115 m.private_op_new_value()
116 assert "is neither movable nor copyable" in str(excinfo.value)
118 assert m.private_op_new_reference().value == 1
122 """#389: rvp::move should fall-through to copy on non-movable objects"""
124 m1 = m.get_moveissue1(1)
126 m2 = m.get_moveissue2(2)
131 """Make sure that cast from pytype rvalue to other pytype works"""
133 value = m.get_pytype_rvalue_castissue(1.0)
139 assert m.CallCastUnusualOpRefConstRef().__class__.__name__ ==
"UnusualOpRef"
140 assert m.CallCastUnusualOpRefMovable().__class__.__name__ ==
"UnusualOpRef"