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# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
# pyre-strict
from libcst._parser.parso.utils import PythonVersionInfo
from libcst._parser.types.config import _pick_compatible_python_version
from libcst.testing.utils import UnitTest
class ConfigTest(UnitTest):
def test_pick_compatible(self) -> None:
self.assertEqual(
PythonVersionInfo(3, 1), _pick_compatible_python_version("3.2")
)
self.assertEqual(
PythonVersionInfo(3, 1), _pick_compatible_python_version("3.1")
)
self.assertEqual(
PythonVersionInfo(3, 8), _pick_compatible_python_version("3.9")
)
self.assertEqual(
PythonVersionInfo(3, 8), _pick_compatible_python_version("3.10")
)
self.assertEqual(
PythonVersionInfo(3, 8), _pick_compatible_python_version("4.0")
)
with self.assertRaisesRegex(
ValueError,
(
r"No version found older than 1\.0 \(PythonVersionInfo\("
+ r"major=1, minor=0\)\) while running on"
),
):
_pick_compatible_python_version("1.0")
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