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from typing import Optional, Tuple
import pytest
from pip._vendor.packaging import specifiers
from pip._vendor.packaging.requirements import Requirement
from pip._internal.utils.packaging import check_requires_python, get_requirement
@pytest.mark.parametrize(
"version_info, requires_python, expected",
[
((3, 6, 5), "== 3.6.4", False),
((3, 6, 5), "== 3.6.5", True),
((3, 6, 5), None, True),
],
)
def test_check_requires_python(
version_info: Tuple[int, int, int], requires_python: Optional[str], expected: bool
) -> None:
actual = check_requires_python(requires_python, version_info)
assert actual == expected
def test_check_requires_python__invalid() -> None:
"""
Test an invalid Requires-Python value.
"""
with pytest.raises(specifiers.InvalidSpecifier):
check_requires_python("invalid", (3, 6, 5))
def test_get_or_create_caching() -> None:
"""test caching of get_or_create requirement"""
teststr = "affinegap==1.10"
from_helper = get_requirement(teststr)
freshly_made = Requirement(teststr)
# Requirement doesn't have an equality operator (yet) so test
# equality of attribute for list of attributes
for iattr in ["name", "url", "extras", "specifier", "marker"]:
assert getattr(from_helper, iattr) == getattr(freshly_made, iattr)
assert get_requirement(teststr) is not Requirement(teststr)
assert get_requirement(teststr) is get_requirement(teststr)
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