pybind11/tests/test_variant_unique_shared.py

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# -*- coding: utf-8 -*-
import pytest
from pybind11_tests import variant_unique_shared as m
def test_default_constructed():
v = m.vptr_double()
assert v.ownership_type() == 0
assert v.get_value() == -1
def test_from_raw():
v = m.from_raw()
assert v.ownership_type() == 0
assert v.get_value() == 3
def test_from_unique():
v = m.from_unique()
assert v.ownership_type() == 0
assert v.get_value() == 5
def test_from_shared():
v = m.from_shared()
assert v.ownership_type() == 1
assert v.get_value() == 7
def test_promotion_to_shared():
v = m.from_raw()
v.get_unique()
assert v.ownership_type() == 0
v.get_shared() # Promotion to shared_ptr.
assert v.ownership_type() == 1
v.get_shared() # Existing shared_ptr.
with pytest.raises(RuntimeError) as exc_info:
v.get_unique()
assert str(exc_info.value) == "get_unique failure."
v.get_shared() # Still works.
def test_shared_from_birth():
v = m.from_shared()
assert v.ownership_type() == 1
with pytest.raises(RuntimeError) as exc_info:
v.get_unique()
assert str(exc_info.value) == "get_unique failure."
v.get_shared() # Still works.