stitcher/tests/conftest.py at dd94f2a5a6b5893032f824578e73f6605316c3d3 · maragall/stitcher · GitHub

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"""Pytest configuration and shared fixtures."""

import numpy as np
import pytest


@pytest.fixture
def rng():
    """Seeded random number generator for reproducible tests."""
    return np.random.default_rng(42)


@pytest.fixture
def sample_tile(rng):
    """Generate a sample tile image."""
    return rng.random((100, 100), dtype=np.float32) * 65535


@pytest.fixture
def sample_multichannel_tile(rng):
    """Generate a sample multi-channel tile."""
    return rng.random((3, 100, 100), dtype=np.float32) * 65535


@pytest.fixture
def force_cpu(monkeypatch):
    """Force CPU fallback by setting CUDA_AVAILABLE to False."""
    import tilefusion.utils as utils

    monkeypatch.setattr(utils, "CUDA_AVAILABLE", False)
    yield
    # monkeypatch automatically restores after test