import pytest
import redis

from mock import patch

from mockredis import mock_strict_redis_client

from util.config.validator import ValidatorContext
from util.config.validators import ConfigValidationException
from util.config.validators.validate_redis import RedisValidator

from test.fixtures import *
from util.morecollections import AttrDict


@pytest.mark.parametrize('unvalidated_config,user,user_password,use_mock,expected', [
  ({}, None, None, False, ConfigValidationException),
  ({'BUILDLOGS_REDIS': {}}, None, None, False, ConfigValidationException),
  ({'BUILDLOGS_REDIS': {'host': 'somehost'}}, None, None, False, redis.ConnectionError),
  ({'BUILDLOGS_REDIS': {'host': 'localhost'}}, None, None, True, None),
])
def test_validate_redis(unvalidated_config, user, user_password, use_mock, expected, app):
  with patch('redis.StrictRedis' if use_mock else 'redis.None', mock_strict_redis_client):
    validator = RedisValidator()
    unvalidated_config = ValidatorContext(unvalidated_config)

    unvalidated_config.user = AttrDict(dict(username=user))
    unvalidated_config.user_password = user_password

    if expected is not None:
      with pytest.raises(expected):
        validator.validate(unvalidated_config)
    else:
      validator.validate(unvalidated_config)