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import types
from unittest import mock

import pytest

from redis.connection import Connection
from redis.exceptions import InvalidResponse
from redis.utils import HIREDIS_AVAILABLE

from .conftest import skip_if_server_version_lt


@pytest.mark.skipif(HIREDIS_AVAILABLE, reason="PythonParser only")
@pytest.mark.onlynoncluster
def test_invalid_response(r):
    raw = b"x"
    parser = r.connection._parser
    with mock.patch.object(parser._buffer, "readline", return_value=raw):
        with pytest.raises(InvalidResponse) as cm:
            parser.read_response()
    assert str(cm.value) == f"Protocol Error: {raw!r}"


@skip_if_server_version_lt("4.0.0")
@pytest.mark.redismod
def test_loading_external_modules(modclient):
    def inner():
        pass

    modclient.load_external_module("myfuncname", inner)
    assert getattr(modclient, "myfuncname") == inner
    assert isinstance(getattr(modclient, "myfuncname"), types.FunctionType)

    # and call it
    from redis.commands import RedisModuleCommands

    j = RedisModuleCommands.json
    modclient.load_external_module("sometestfuncname", j)

    # d = {'hello': 'world!'}
    # mod = j(modclient)
    # mod.set("fookey", ".", d)
    # assert mod.get('fookey') == d


class TestConnection:
    def test_disconnect(self):
        conn = Connection()
        mock_sock = mock.Mock()
        conn._sock = mock_sock
        conn.disconnect()
        mock_sock.shutdown.assert_called_once()
        mock_sock.close.assert_called_once()
        assert conn._sock is None

    def test_disconnect__shutdown_OSError(self):
        """An OSError on socket shutdown will still close the socket."""
        conn = Connection()
        mock_sock = mock.Mock()
        conn._sock = mock_sock
        conn._sock.shutdown.side_effect = OSError
        conn.disconnect()
        mock_sock.shutdown.assert_called_once()
        mock_sock.close.assert_called_once()
        assert conn._sock is None

    def test_disconnect__close_OSError(self):
        """An OSError on socket close will still clear out the socket."""
        conn = Connection()
        mock_sock = mock.Mock()
        conn._sock = mock_sock
        conn._sock.close.side_effect = OSError
        conn.disconnect()
        mock_sock.shutdown.assert_called_once()
        mock_sock.close.assert_called_once()
        assert conn._sock is None