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# Copyright (c) 2018 Uber Technologies, Inc.
#
# 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.
from unittest import mock
import time
from jaeger_client.throttler import RemoteThrottler
def test_throttler_simple():
channel = mock.MagicMock()
throttler = RemoteThrottler(channel, 'test-service')
allowed = throttler.is_allowed('test-operation')
assert not allowed
allowed = throttler.is_allowed('test-operation')
assert not allowed
def test_throttler_no_io_loop():
channel = mock.MagicMock()
channel.io_loop = None
throttler = RemoteThrottler(channel, 'test-service')
assert throttler
def test_throttler_credits():
channel = mock.MagicMock()
throttler = RemoteThrottler(channel, 'test-service')
throttler.credits['test-operation'] = 3.0
allowed = throttler.is_allowed('test-operation')
assert allowed
assert throttler.credits['test-operation'] == 2.0
def test_throttler_init_polling():
channel = mock.MagicMock()
throttler = RemoteThrottler(channel, 'test-service')
# noinspection PyProtectedMember
throttler._init_polling()
assert channel.io_loop.call_later.call_count == 1
throttler.close()
# noinspection PyProtectedMember
throttler._init_polling()
assert channel.io_loop.call_later.call_count == 1
def test_throttler_delayed_polling():
channel = mock.MagicMock()
channel.io_loop.time = time.time
channel.io_loop._next_timeout = 1
throttler = RemoteThrottler(channel, 'test-service')
throttler.credits = {'test-operation': 0}
# noinspection PyProtectedMember
throttler._delayed_polling()
assert channel.request_throttling_credits.call_count == 1
assert throttler.periodic
throttler.close()
throttler.periodic = None
throttler._delayed_polling()
assert throttler.periodic is None
def test_throttler_request_callback():
channel = mock.MagicMock()
throttler = RemoteThrottler(channel, 'test-service')
throttler.error_reporter = mock.MagicMock()
# noinspection PyProtectedMember
future = mock.MagicMock()
future.exception = mock.MagicMock()
future.exception.return_value = Exception()
throttler._request_callback(future)
assert throttler.error_reporter.error.call_count == 1
future.exception.return_value = None
future.result.return_value = mock.MagicMock()
future.result.return_value.body = """
{
\"balances\": [
{
\"operation\": \"test-operation\",
\"balance\": 2.0
}
]
}
"""
throttler._request_callback(future)
assert throttler.credits['test-operation'] == 2.0
future.result.return_value.body = '{ "bad": "json" }'
throttler._request_callback(future)
assert throttler.error_reporter.error.call_count == 2
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