| """
|
| Shared fixtures for the whole test suite, auto-loaded by pytest for every
|
| file in this directory -- extracted from the original monolithic
|
| test_dense_evolution.py when it was split by module (test_simulator.py,
|
| test_registry.py, test_compiler.py, test_parser.py, test_chunk.py,
|
| test_healing.py, test_integration.py).
|
| """
|
| import os
|
| import sys
|
|
|
| import pytest
|
|
|
| from dense_evolution import DenseSVSimulator
|
|
|
|
|
| @pytest.hookimpl(trylast=True)
|
| def pytest_sessionfinish(session, exitstatus):
|
| """
|
| On macOS, force an immediate process exit instead of letting normal
|
| Python interpreter shutdown run.
|
|
|
| Reproduced on CI (macos-latest, Python 3.10, arm64): every test
|
| passes, coverage.xml is written, pytest prints its own "N passed"
|
| summary -- then, a few seconds later, the process dies with SIGSEGV
|
| (exit 139) during interpreter finalization, after pytest's own work
|
| is already done. Bisected by first ruling out Qiskit (an earlier fix
|
| removed it from the process on macOS entirely; the crash persisted
|
| unchanged), which leaves native-extension teardown -- most likely
|
| JAX/XLA's runtime shutdown, a known category of issue on some
|
| platforms -- as the remaining explanation. `trylast=True` ensures
|
| this runs after pytest-cov's own pytest_sessionfinish (which writes
|
| coverage.xml), so nothing meaningful is skipped; os._exit() bypasses
|
| Python's normal atexit/finalization machinery entirely, which is
|
| exactly the phase that was crashing.
|
| """
|
| if sys.platform == 'darwin':
|
| sys.stdout.flush()
|
| sys.stderr.flush()
|
| os._exit(exitstatus)
|
|
|
|
|
|
|
|
|
|
|
| @pytest.fixture
|
| def sim2():
|
| """Fresh 2-qubit simulator (NumPy CPU, float64)"""
|
| return DenseSVSimulator(n_qubits=2, use_gpu=False, use_float32=False)
|
|
|
| @pytest.fixture
|
| def sim3():
|
| """Fresh 3-qubit simulator (NumPy CPU, float64)"""
|
| return DenseSVSimulator(n_qubits=3, use_gpu=False, use_float32=False)
|
|
|
| @pytest.fixture
|
| def sim4():
|
| """Fresh 4-qubit simulator (NumPy CPU, float64)"""
|
| return DenseSVSimulator(n_qubits=4, use_gpu=False, use_float32=False)
|
|
|
