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"""Tests kytos.core.pacing module.""" |
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import asyncio |
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import time |
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import pytest |
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from kytos.core.pacing import NoSuchActionError, Pacer, PacerWrapper |
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class TestPacer: |
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"""Pacer tests""" |
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@pytest.fixture |
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def pacer(self) -> Pacer: |
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"""Setup the pacer""" |
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return Pacer("memory://") |
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@pytest.fixture( |
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params=[ |
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'fixed_window', |
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'ignore_pace', |
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] |
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) |
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def strategy(self, request): |
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"""Provide a strategy for tests.""" |
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return request.param |
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@pytest.fixture |
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def configured_pacer(self, pacer: Pacer, strategy): |
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"""Configure the pacer to have a paced action.""" |
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pacer.inject_config( |
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{ |
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"paced_action": { |
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"pace": "10/second", |
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"strategy": strategy, |
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}, |
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} |
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) |
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return pacer |
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@pytest.fixture |
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def pacer_wrapper(self, pacer): |
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"""Setup a wrapper around the pacer.""" |
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return PacerWrapper("test_space", pacer) |
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def test_check_strategies(self, pacer: Pacer): |
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"""Check which strategies are present.""" |
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assert set(pacer.sync_strategies) == { |
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'fixed_window', |
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'ignore_pace' |
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} |
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assert set(pacer.async_strategies) == { |
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'fixed_window', |
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'ignore_pace' |
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} |
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def test_missing_pace(self, pacer: Pacer): |
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"""Test what happens when no pace is set.""" |
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with pytest.raises(NoSuchActionError): |
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pacer.hit("unpaced_action") |
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def test_existing_pace(self, configured_pacer: Pacer): |
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"""Test what happens when a pace is set""" |
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configured_pacer.hit("paced_action") |
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async def test_async_missing_pace(self, pacer: Pacer): |
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"""Test what happens when no pace is set.""" |
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with pytest.raises(NoSuchActionError): |
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await pacer.ahit("unpaced_action") |
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async def test_async_existing_pace(self, configured_pacer: Pacer): |
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"""Test what happens when a pace is set""" |
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await configured_pacer.ahit("paced_action") |
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async def test_async_pace_limit(self, strategy, configured_pacer: Pacer): |
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"""Test that actions are being properly paced""" |
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async def micro_task(): |
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await configured_pacer.ahit("paced_action") |
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loop = asyncio.get_event_loop() |
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start = loop.time() |
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async with asyncio.timeout(5): |
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await asyncio.gather( |
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*[ |
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micro_task() |
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for _ in range(20) |
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] |
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) |
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end = loop.time() |
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elapsed = end - start |
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if strategy != 'ignore_pace': |
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assert elapsed > 1 |
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else: |
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assert elapsed < 1 |
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def test_pace_limit(self, strategy, configured_pacer: Pacer): |
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"""Test that actions are being properly paced""" |
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actions_executed = 0 |
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start = time.time() |
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while actions_executed < 20: |
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configured_pacer.hit("paced_action") |
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actions_executed = actions_executed + 1 |
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end = time.time() |
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elapsed = end - start |
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if strategy != 'ignore_pace': |
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assert elapsed > 1 |
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else: |
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assert elapsed < 1 |
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def test_nonexistant_strategy(self, pacer: Pacer): |
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"""Make sure that nonexistant strategies raise an exception""" |
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with pytest.raises(ValueError): |
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pacer.inject_config( |
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{ |
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"paced_action": { |
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"pace": "10/second", |
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"strategy": "non-existant strategy", |
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}, |
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} |
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) |
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def test_bad_pace(self, pacer: Pacer, strategy): |
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"""Make sure that bad pace values raise an exception""" |
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with pytest.raises(ValueError): |
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pacer.inject_config( |
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{ |
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"paced_action": { |
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"pace": "z10/second", |
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"strategy": strategy, |
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}, |
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} |
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) |
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kytos-ng /
kytos
