from __future__ import unicode_literals
import pytest
import redis

from redis._compat import unichr, unicode
from .conftest import _get_client


class TestEncoding(object):
    @pytest.fixture()
    def r(self, request):
        return _get_client(redis.Redis, request=request, decode_responses=True)

    def test_simple_encoding(self, r):
        unicode_string = unichr(3456) + 'abcd' + unichr(3421)
        r['unicode-string'] = unicode_string
        cached_val = r['unicode-string']
        assert isinstance(cached_val, unicode)
        assert unicode_string == cached_val

    def test_list_encoding(self, r):
        unicode_string = unichr(3456) + 'abcd' + unichr(3421)
        result = [unicode_string, unicode_string, unicode_string]
        r.rpush('a', *result)
        assert r.lrange('a', 0, -1) == result


class TestCommandsAreNotEncoded(object):
    @pytest.fixture()
    def r(self, request):
        return _get_client(redis.Redis, request=request, encoding='utf-16')

    def test_basic_command(self, r):
        r.set('hello', 'world')


class TestInvalidUserInput(object):
    def test_boolean_fails(self, r):
        with pytest.raises(redis.DataError):
            r.set('a', True)

    def test_none_fails(self, r):
        with pytest.raises(redis.DataError):
            r.set('a', None)

    def test_user_type_fails(self, r):
        class Foo(object):
            def __str__(self):
                return 'Foo'

            def __unicode__(self):
                return 'Foo'

        with pytest.raises(redis.DataError):
            r.set('a', Foo())