#!/usr/bin/env python
#
# Copyright (c) 2022 Donfig Developers
# Copyright (c) 2014-2018, Anaconda, Inc. and contributors
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import pickle

from .._lock import SerializableLock


def test_SerializableLock():
    a = SerializableLock()
    b = SerializableLock()
    with a:
        pass

    with a:
        with b:
            pass

    with a:
        assert not a.acquire(False)

    a2 = pickle.loads(pickle.dumps(a))
    a3 = pickle.loads(pickle.dumps(a))
    a4 = pickle.loads(pickle.dumps(a2))

    for x in [a, a2, a3, a4]:
        for y in [a, a2, a3, a4]:
            with x:
                assert not y.acquire(False)

    b2 = pickle.loads(pickle.dumps(b))
    b3 = pickle.loads(pickle.dumps(b2))

    for x in [a, a2, a3, a4]:
        for y in [b, b2, b3]:
            with x:
                with y:
                    pass
            with y:
                with x:
                    pass


def test_SerializableLock_name_collision():
    a = SerializableLock("a")
    b = SerializableLock("b")
    c = SerializableLock("a")
    d = SerializableLock()

    assert a.lock is not b.lock
    assert a.lock is c.lock
    assert d.lock not in (a.lock, b.lock, c.lock)


def test_SerializableLock_locked():
    a = SerializableLock("a")
    assert not a.locked()
    with a:
        assert a.locked()
    assert not a.locked()


def test_SerializableLock_acquire_blocking():
    a = SerializableLock("a")
    assert a.acquire(blocking=True)
    assert not a.acquire(blocking=False)
    a.release()