tests/test_utilities.py


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import pickle

from blinker._utilities import symbol


def test_symbols():
    foo = symbol("foo")
    assert foo.name == "foo"
    assert foo is symbol("foo")

    bar = symbol("bar")
    assert foo is not bar
    assert foo != bar
    assert not foo == bar

    assert repr(foo) == "foo"


def test_pickled_symbols():
    foo = symbol("foo")

    for _ in 0, 1, 2:
        roundtrip = pickle.loads(pickle.dumps(foo))
        assert roundtrip is foo