# Copyright (c) 2016 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

"""Unit Tests for oslo.log formatter"""

import logging
import sys

from oslo_config import cfg
from oslo_config import fixture as config_fixture
from oslo_context import context
from oslotest import base as test_base

from oslo_log import formatters
from oslo_log import log


def _fake_context():
    ctxt = context.RequestContext(
        user_id="user",
        project_id="tenant",
        project_domain_id="pdomain",
        user_domain_id="udomain",
        overwrite=True,
    )

    return ctxt


class FormatterTest(test_base.BaseTestCase):
    def setUp(self):
        super().setUp()

    def test_replace_false_value_exists(self):
        d = {"user": "user1"}
        s = "%(user)s" % formatters._ReplaceFalseValue(d)
        self.assertEqual(d['user'], s)

    def test_replace_false_value_not_exists(self):
        d = {"user": "user1"}
        s = "%(project)s" % formatters._ReplaceFalseValue(d)
        self.assertEqual("-", s)

    def test_dictify_context_empty(self):
        self.assertEqual({}, formatters._dictify_context(None))  # type: ignore

    def test_dictify_context_with_dict(self):
        d = {"user": "user"}
        self.assertEqual(d, formatters._dictify_context(d))

    def test_dictify_context_with_context(self):
        ctxt = _fake_context()
        self.assertEqual(
            ctxt.get_logging_values(), formatters._dictify_context(ctxt)
        )


# Test for https://bugs.python.org/issue28603
class FormatUnhashableExceptionTest(test_base.BaseTestCase):
    def setUp(self):
        super().setUp()
        self.config_fixture = self.useFixture(
            config_fixture.Config(cfg.ConfigOpts())
        )
        self.conf = self.config_fixture.conf
        log.register_options(self.conf)

    def _unhashable_exception_info(self):
        class UnhashableException(Exception):
            __hash__ = None  # type: ignore

        try:
            raise UnhashableException()
        except UnhashableException:
            return sys.exc_info()

    def test_error_summary(self):
        exc_info = self._unhashable_exception_info()
        record = logging.LogRecord(
            'test', logging.ERROR, 'test', 0, 'test message', {}, exc_info
        )
        err_summary = formatters._get_error_summary(record)
        self.assertTrue(err_summary)

    def test_json_format_exception(self):
        exc_info = self._unhashable_exception_info()
        formatter = formatters.JSONFormatter()
        tb = ''.join(formatter.formatException(exc_info))
        self.assertTrue(tb)

    def test_fluent_format_exception(self):
        exc_info = self._unhashable_exception_info()
        formatter = formatters.FluentFormatter()
        tb = formatter.formatException(exc_info)
        self.assertTrue(tb)

    def test_context_format_exception_norecord(self):
        exc_info = self._unhashable_exception_info()
        formatter = formatters.ContextFormatter(config=self.conf)
        tb = formatter.formatException(exc_info)
        self.assertTrue(tb)

    def test_context_format_exception(self):
        exc_info = self._unhashable_exception_info()
        formatter = formatters.ContextFormatter(config=self.conf)
        record = logging.LogRecord(
            'test', logging.ERROR, 'test', 0, 'test message', {}, exc_info
        )
        tb = formatter.format(record)
        self.assertTrue(tb)
