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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
import pytest
from dns._features import (
_cache,
_requirements,
_tuple_from_text,
_version_check,
force,
have,
)
try:
import cryptography
v = _tuple_from_text(cryptography.__version__)
have_cryptography = v >= (42, 0, 0)
except ImportError:
have_cryptography = False
def test_tuple_from_text():
assert _tuple_from_text("") == ()
assert _tuple_from_text("1") == (1,)
assert _tuple_from_text("1.2") == (1, 2)
assert _tuple_from_text("1.2rc1") == (1, 2)
assert _tuple_from_text("1.2.junk3") == (1, 2)
@pytest.mark.skipif(
not have_cryptography, reason="cryptography not available or too old"
)
def test_version_check():
assert _version_check("cryptography>=42")
assert not _version_check("cryptography>=10000")
assert not _version_check("totallyboguspackagename>=10000")
@pytest.mark.skipif(
not have_cryptography, reason="cryptography not available or too old"
)
def test_have():
# ensure cache is empty; we can't just assign as our local is shadowing the
# variable in dns._features
while len(_cache) > 0:
_cache.popitem()
assert have("dnssec")
assert _cache["dnssec"] == True
assert not have("bogusfeature")
assert _cache["bogusfeature"] == False
_requirements["unavailable"] = ["bogusmodule>=10000"]
try:
assert not have("unavailable")
finally:
del _requirements["unavailable"]
def test_force():
while len(_cache) > 0:
_cache.popitem()
assert not have("bogusfeature")
assert _cache["bogusfeature"] == False
force("bogusfeature", True)
assert have("bogusfeature")
assert _cache["bogusfeature"] == True
force("bogusfeature", False)
assert not have("bogusfeature")
assert _cache["bogusfeature"] == False
_requirements["unavailable"] = ["bogusmodule>=10000"]
try:
assert not have("unavailable")
assert _cache["unavailable"] == False
force("unavailable", True)
assert _cache["unavailable"] == True
finally:
del _requirements["unavailable"]
|
