| # This file is dual licensed under the terms of the Apache License, Version |
| # 2.0, and the BSD License. See the LICENSE file in the root of this repository |
| # for complete details. |
| |
| from __future__ import absolute_import, division, print_function |
| |
| import pytest |
| |
| from cryptography.hazmat.backends import _available_backends |
| |
| from .utils import check_backend_support, select_backends, skip_if_empty |
| |
| |
| def pytest_generate_tests(metafunc): |
| if "backend" in metafunc.fixturenames: |
| names = metafunc.config.getoption("--backend") |
| selected_backends = select_backends(names, _available_backends()) |
| |
| filtered_backends = [] |
| required = metafunc.function.requires_backend_interface |
| required_interfaces = [ |
| mark.kwargs["interface"] for mark in required |
| ] |
| for backend in selected_backends: |
| if all( |
| isinstance(backend, iface) for iface in required_interfaces |
| ): |
| filtered_backends.append(backend) |
| |
| # If you pass an empty list to parametrize Bad Things(tm) happen |
| # as of pytest 2.6.4 when the test also has a parametrize decorator |
| skip_if_empty(filtered_backends, required_interfaces) |
| |
| metafunc.parametrize("backend", filtered_backends) |
| |
| |
| @pytest.mark.trylast |
| def pytest_runtest_setup(item): |
| check_backend_support(item) |
| |
| |
| def pytest_addoption(parser): |
| parser.addoption( |
| "--backend", action="store", metavar="NAME", |
| help="Only run tests matching the backend NAME." |
| ) |