pybind11/tests/test_class_sh_disowning.py
Ralf W. Grosse-Kunstleve bd8985aa0f
[smart_holder] Introduce PYBIND11_SMART_HOLDER_DISABLE option. (#5348)
* Step 1: Establish new `PYBIND11_SMART_HOLDER_ENABLED` macro, but only under include/pybind11/

At the stage `PYBIND11_HAS_INTERNALS_WITH_SMART_HOLDER_SUPPORT` and `PYBIND11_SMART_HOLDER_ENABLED` are still equivalent.

* Systematically replace all `PYBIND11_HAS_INTERNALS_WITH_SMART_HOLDER_SUPPORT` with `PYBIND11_SMART_HOLDER_ENABLED` under tests/ and ubench/

As at the previous stage, `PYBIND11_HAS_INTERNALS_WITH_SMART_HOLDER_SUPPORT` and `PYBIND11_SMART_HOLDER_ENABLED` are still equivalent.

* Introduce `PYBIND11_SMART_HOLDER_DISABLE` option.

* `#ifdef` out entire `wrap()` function to avoid `unused-parameter` warning-as-error under macos-13

```
/Users/runner/work/pybind11/pybind11/tests/test_class_sh_trampoline_basic.cpp:67:23: error: unused parameter 'm' [-Werror,-Wunused-parameter]
void wrap(py::module_ m, const char *py_class_name) {
                      ^
/Users/runner/work/pybind11/pybind11/tests/test_class_sh_trampoline_basic.cpp:67:38: error: unused parameter 'py_class_name' [-Werror,-Wunused-parameter]
void wrap(py::module_ m, const char *py_class_name) {
                                     ^
2 errors generated.
```
2024-09-01 14:34:36 -07:00

84 lines
2.9 KiB
Python

from __future__ import annotations
import pytest
from pybind11_tests import class_sh_disowning as m
if not m.defined_PYBIND11_SMART_HOLDER_ENABLED:
pytest.skip("smart_holder not available.", allow_module_level=True)
def is_disowned(obj):
try:
obj.get()
except ValueError:
return True
return False
def test_same_twice():
while True:
obj1a = m.Atype1(57)
obj1b = m.Atype1(62)
assert m.same_twice(obj1a, obj1b) == (57 * 10 + 1) * 100 + (62 * 10 + 1) * 10
assert is_disowned(obj1a)
assert is_disowned(obj1b)
obj1c = m.Atype1(0)
with pytest.raises(ValueError):
# Disowning works for one argument, but not both.
m.same_twice(obj1c, obj1c)
assert is_disowned(obj1c)
return # Comment out for manual leak checking (use `top` command).
def test_mixed():
first_pass = True
while True:
obj1a = m.Atype1(90)
obj2a = m.Atype2(25)
assert m.mixed(obj1a, obj2a) == (90 * 10 + 1) * 200 + (25 * 10 + 2) * 20
assert is_disowned(obj1a)
assert is_disowned(obj2a)
# The C++ order of evaluation of function arguments is (unfortunately) unspecified:
# https://en.cppreference.com/w/cpp/language/eval_order
# Read on.
obj1b = m.Atype1(0)
with pytest.raises(ValueError):
# If the 1st argument is evaluated first, obj1b is disowned before the conversion for
# the already disowned obj2a fails as expected.
m.mixed(obj1b, obj2a)
obj2b = m.Atype2(0)
with pytest.raises(ValueError):
# If the 2nd argument is evaluated first, obj2b is disowned before the conversion for
# the already disowned obj1a fails as expected.
m.mixed(obj1a, obj2b)
# Either obj1b or obj2b was disowned in the expected failed m.mixed() calls above, but not
# both.
is_disowned_results = (is_disowned(obj1b), is_disowned(obj2b))
assert is_disowned_results.count(True) == 1
if first_pass:
first_pass = False
print(
"\nC++ function argument %d is evaluated first."
% (is_disowned_results.index(True) + 1)
)
return # Comment out for manual leak checking (use `top` command).
def test_overloaded():
while True:
obj1 = m.Atype1(81)
obj2 = m.Atype2(60)
with pytest.raises(TypeError):
m.overloaded(obj1, "NotInt")
assert obj1.get() == 81 * 10 + 1 # Not disowned.
assert m.overloaded(obj1, 3) == (81 * 10 + 1) * 30 + 3
with pytest.raises(TypeError):
m.overloaded(obj2, "NotInt")
assert obj2.get() == 60 * 10 + 2 # Not disowned.
assert m.overloaded(obj2, 2) == (60 * 10 + 2) * 40 + 2
return # Comment out for manual leak checking (use `top` command).