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import copy
import pickle
import pytest
from globus_sdk._missing import MISSING, MissingType
def test_missing_type_cannot_be_instantiated():
with pytest.raises(TypeError, match="MissingType should not be instantiated"):
MissingType()
def test_missing_sentinel_bools_as_false():
assert bool(MISSING) is False
def test_str_of_missing():
assert str(MISSING) == "<globus_sdk.MISSING>"
def test_copy_of_missing_is_self():
assert copy.copy(MISSING) is MISSING
assert copy.deepcopy(MISSING) is MISSING
def test_pickle_of_missing_is_self():
assert pickle.loads(pickle.dumps(MISSING)) is MISSING
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