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# vim: set fileencoding=utf-8:
#
# GPIO Zero: a library for controlling the Raspberry Pi's GPIO pins
#
# Copyright (c) 2016-2023 Dave Jones <dave@waveform.org.uk>
# Copyright (c) 2020 Fangchen Li <fangchen.li@outlook.com>
#
# SPDX-License-Identifier: BSD-3-Clause
import pytest
from gpiozero.compat import frozendict
def test_frozendict():
d = {1: 'a', 2: 'b'}
e = {1: 'a', 2: 'b', 'foo': 'bar'}
f = frozendict(d)
assert f[1] == 'a'
assert f[2] == 'b'
with pytest.raises(KeyError):
f[3]
with pytest.raises(TypeError):
f[3] = 'c'
assert d == f
assert d == f.copy()
assert e == f.copy(foo='bar')
assert len(f) == 2
assert {k: v for k, v in f.items()} == d
h = hash(f)
assert h is not None
assert hash(f) == h
assert repr(f) == f"<frozendict {d!r}>"
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