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import itertools
import pytest
from referencing import Resource, exceptions
def pairs(choices):
return itertools.combinations(choices, 2)
TRUE = Resource.opaque(True)
thunks = (
lambda: exceptions.CannotDetermineSpecification(TRUE),
lambda: exceptions.NoSuchResource("urn:example:foo"),
lambda: exceptions.NoInternalID(TRUE),
lambda: exceptions.InvalidAnchor(resource=TRUE, anchor="foo", ref="a#b"),
lambda: exceptions.NoSuchAnchor(resource=TRUE, anchor="foo", ref="a#b"),
lambda: exceptions.PointerToNowhere(resource=TRUE, ref="urn:example:foo"),
lambda: exceptions.Unresolvable("urn:example:foo"),
lambda: exceptions.Unretrievable("urn:example:foo"),
)
@pytest.mark.parametrize("one, two", pairs(each() for each in thunks))
def test_eq_incompatible_types(one, two):
assert one != two
@pytest.mark.parametrize("thunk", thunks)
def test_hash(thunk):
assert thunk() in {thunk()}
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