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"""
pytest plugin functions
"""
from __future__ import annotations
import pytest
from .download import DataFetcher
def pytest_addoption(parser):
parser.addoption(
"--regression",
action="store_true",
default=False,
help="run regression tests. Download data for those tests if required",
)
@pytest.fixture(scope="session")
def dials_data(request) -> DataFetcher:
"""
Return the location of a regression dataset as py.path object.
Download the files if they are not on disk already.
Skip the test if the dataset can not be downloaded.
"""
if not request.config.getoption("--regression"):
pytest.skip("Test requires --regression option to run.")
df = DataFetcher()
def fail_test_if_lookup_failed(result):
if not result:
pytest.fail(
"Test data could not be downloaded. Your version of dials.data may be out of date"
)
return result
setattr(df, "result_filter", fail_test_if_lookup_failed)
return df
|
