You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
121 lines
5.0 KiB
121 lines
5.0 KiB
import pytest
|
|
from pybind11_tests import has_optional
|
|
|
|
|
|
def test_lacking_copy_ctor():
|
|
from pybind11_tests import lacking_copy_ctor
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
lacking_copy_ctor.get_one()
|
|
assert "the object is non-copyable!" in str(excinfo.value)
|
|
|
|
|
|
def test_lacking_move_ctor():
|
|
from pybind11_tests import lacking_move_ctor
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
lacking_move_ctor.get_one()
|
|
assert "the object is neither movable nor copyable!" in str(excinfo.value)
|
|
|
|
|
|
def test_move_and_copy_casts():
|
|
"""Cast some values in C++ via custom type casters and count the number of moves/copies."""
|
|
from pybind11_tests import move_and_copy_casts, move_and_copy_cstats
|
|
|
|
cstats = move_and_copy_cstats()
|
|
c_m, c_mc, c_c = cstats["MoveOnlyInt"], cstats["MoveOrCopyInt"], cstats["CopyOnlyInt"]
|
|
|
|
# The type move constructions/assignments below each get incremented: the move assignment comes
|
|
# from the type_caster load; the move construction happens when extracting that via a cast or
|
|
# loading into an argument.
|
|
assert move_and_copy_casts(3) == 18
|
|
assert c_m.copy_assignments + c_m.copy_constructions == 0
|
|
assert c_m.move_assignments == 2
|
|
assert c_m.move_constructions == 2
|
|
assert c_mc.alive() == 0
|
|
assert c_mc.copy_assignments + c_mc.copy_constructions == 0
|
|
assert c_mc.move_assignments == 2
|
|
assert c_mc.move_constructions == 2
|
|
assert c_c.alive() == 0
|
|
assert c_c.copy_assignments == 2
|
|
assert c_c.copy_constructions == 2
|
|
assert c_m.alive() + c_mc.alive() + c_c.alive() == 0
|
|
|
|
|
|
def test_move_and_copy_loads():
|
|
"""Call some functions that load arguments via custom type casters and count the number of
|
|
moves/copies."""
|
|
from pybind11_tests import (move_and_copy_cstats, move_only, move_or_copy, copy_only,
|
|
move_pair, move_tuple, copy_tuple, move_copy_nested)
|
|
|
|
cstats = move_and_copy_cstats()
|
|
c_m, c_mc, c_c = cstats["MoveOnlyInt"], cstats["MoveOrCopyInt"], cstats["CopyOnlyInt"]
|
|
|
|
assert move_only(10) == 10 # 1 move, c_m
|
|
assert move_or_copy(11) == 11 # 1 move, c_mc
|
|
assert copy_only(12) == 12 # 1 copy, c_c
|
|
assert move_pair((13, 14)) == 27 # 1 c_m move, 1 c_mc move
|
|
assert move_tuple((15, 16, 17)) == 48 # 2 c_m moves, 1 c_mc move
|
|
assert copy_tuple((18, 19)) == 37 # 2 c_c copies
|
|
# Direct constructions: 2 c_m moves, 2 c_mc moves, 1 c_c copy
|
|
# Extra moves/copies when moving pairs/tuples: 3 c_m, 3 c_mc, 2 c_c
|
|
assert move_copy_nested((1, ((2, 3, (4,)), 5))) == 15
|
|
|
|
assert c_m.copy_assignments + c_m.copy_constructions == 0
|
|
assert c_m.move_assignments == 6
|
|
assert c_m.move_constructions == 9
|
|
assert c_mc.copy_assignments + c_mc.copy_constructions == 0
|
|
assert c_mc.move_assignments == 5
|
|
assert c_mc.move_constructions == 8
|
|
assert c_c.copy_assignments == 4
|
|
assert c_c.copy_constructions == 6
|
|
assert c_m.alive() + c_mc.alive() + c_c.alive() == 0
|
|
|
|
|
|
@pytest.mark.skipif(not has_optional, reason='no <optional>')
|
|
def test_move_and_copy_load_optional():
|
|
"""Tests move/copy loads of std::optional arguments"""
|
|
from pybind11_tests import (move_and_copy_cstats, move_optional, move_or_copy_optional,
|
|
copy_optional, move_optional_tuple)
|
|
|
|
cstats = move_and_copy_cstats()
|
|
c_m, c_mc, c_c = cstats["MoveOnlyInt"], cstats["MoveOrCopyInt"], cstats["CopyOnlyInt"]
|
|
|
|
# The extra move/copy constructions below come from the std::optional move (which has to move
|
|
# its arguments):
|
|
assert move_optional(10) == 10 # c_m: 1 move assign, 2 move construct
|
|
assert move_or_copy_optional(11) == 11 # c_mc: 1 move assign, 2 move construct
|
|
assert copy_optional(12) == 12 # c_c: 1 copy assign, 2 copy construct
|
|
# 1 move assign + move construct moves each of c_m, c_mc, 1 c_c copy
|
|
# +1 move/copy construct each from moving the tuple
|
|
# +1 move/copy construct each from moving the optional (which moves the tuple again)
|
|
assert move_optional_tuple((3, 4, 5)) == 12
|
|
|
|
assert c_m.copy_assignments + c_m.copy_constructions == 0
|
|
assert c_m.move_assignments == 2
|
|
assert c_m.move_constructions == 5
|
|
assert c_mc.copy_assignments + c_mc.copy_constructions == 0
|
|
assert c_mc.move_assignments == 2
|
|
assert c_mc.move_constructions == 5
|
|
assert c_c.copy_assignments == 2
|
|
assert c_c.copy_constructions == 5
|
|
assert c_m.alive() + c_mc.alive() + c_c.alive() == 0
|
|
|
|
|
|
def test_private_op_new():
|
|
"""An object with a private `operator new` cannot be returned by value"""
|
|
import pybind11_tests as m
|
|
|
|
with pytest.raises(RuntimeError) as excinfo:
|
|
m.private_op_new_value()
|
|
assert "the object is neither movable nor copyable" in str(excinfo.value)
|
|
|
|
assert m.private_op_new_reference().value == 1
|
|
|
|
|
|
def test_move_fallback():
|
|
"""#389: rvp::move should fall-through to copy on non-movable objects"""
|
|
from pybind11_tests import get_moveissue1, get_moveissue2
|
|
|
|
m2 = get_moveissue2(2)
|
|
assert m2.value == 2
|
|
m1 = get_moveissue1(1)
|
|
assert m1.value == 1
|