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184 lines
8.3 KiB
Python
184 lines
8.3 KiB
Python
"""
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Tests for decnet.mutator — mutation engine, retry logic, due-time scheduling.
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All subprocess and state I/O is mocked; no Docker or filesystem access.
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"""
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import time
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from pathlib import Path
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from unittest.mock import MagicMock, patch, AsyncMock
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import pytest
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from decnet.config import DeckyConfig, DecnetConfig
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from decnet.engine import _compose_with_retry
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from decnet.mutator import mutate_all, mutate_decky
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# ---------------------------------------------------------------------------
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# Helpers
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# ---------------------------------------------------------------------------
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def _make_decky(name="decky-01", services=None, archetype=None,
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mutate_interval=30, last_mutated=0.0):
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return DeckyConfig(
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name=name,
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ip="192.168.1.10",
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services=services or ["ssh"],
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distro="debian",
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base_image="debian",
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hostname="host-01",
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archetype=archetype,
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mutate_interval=mutate_interval,
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last_mutated=last_mutated,
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)
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def _make_config(deckies=None, mutate_interval=30):
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return DecnetConfig(
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mode="unihost", interface="eth0",
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subnet="192.168.1.0/24", gateway="192.168.1.1",
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deckies=deckies or [_make_decky()],
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mutate_interval=mutate_interval,
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)
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@pytest.fixture
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def mock_repo():
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repo = AsyncMock()
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repo.get_state.return_value = None
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return repo
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# ---------------------------------------------------------------------------
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# mutate_decky
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# ---------------------------------------------------------------------------
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@pytest.mark.asyncio
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class TestMutateDecky:
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def _patch_io(self):
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"""Return a context manager that mocks all other I/O in mutate_decky."""
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return (
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patch("decnet.mutator.engine.write_compose"),
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patch("decnet.mutator.engine._compose_with_retry", new_callable=AsyncMock),
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)
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async def test_returns_false_when_no_state(self, mock_repo):
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mock_repo.get_state.return_value = None
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assert await mutate_decky("decky-01", repo=mock_repo) is False
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async def test_returns_false_when_decky_not_found(self, mock_repo):
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cfg = _make_config()
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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assert await mutate_decky("nonexistent", repo=mock_repo) is False
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async def test_returns_true_on_success(self, mock_repo):
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cfg = _make_config()
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.write_compose"), \
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patch("anyio.to_thread.run_sync", new_callable=AsyncMock):
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assert await mutate_decky("decky-01", repo=mock_repo) is True
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async def test_saves_state_after_mutation(self, mock_repo):
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cfg = _make_config()
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.write_compose"), \
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patch("anyio.to_thread.run_sync", new_callable=AsyncMock):
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await mutate_decky("decky-01", repo=mock_repo)
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mock_repo.set_state.assert_awaited_once()
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async def test_regenerates_compose_after_mutation(self, mock_repo):
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cfg = _make_config()
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.write_compose") as mock_compose, \
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patch("anyio.to_thread.run_sync", new_callable=AsyncMock):
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await mutate_decky("decky-01", repo=mock_repo)
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mock_compose.assert_called_once()
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async def test_returns_false_on_compose_failure(self, mock_repo):
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cfg = _make_config()
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.write_compose"), \
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patch("anyio.to_thread.run_sync", side_effect=Exception("docker fail")):
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assert await mutate_decky("decky-01", repo=mock_repo) is False
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async def test_mutation_changes_services(self, mock_repo):
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cfg = _make_config(deckies=[_make_decky(services=["ssh"])])
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.write_compose"), \
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patch("anyio.to_thread.run_sync", new_callable=AsyncMock):
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await mutate_decky("decky-01", repo=mock_repo)
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# Check that set_state was called with a config where services might have changed
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call_args = mock_repo.set_state.await_args[0]
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new_config_dict = call_args[1]["config"]
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new_services = new_config_dict["deckies"][0]["services"]
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assert isinstance(new_services, list)
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assert len(new_services) >= 1
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async def test_updates_last_mutated_timestamp(self, mock_repo):
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cfg = _make_config(deckies=[_make_decky(last_mutated=0.0)])
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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before = time.time()
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with patch("decnet.mutator.engine.write_compose"), \
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patch("anyio.to_thread.run_sync", new_callable=AsyncMock):
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await mutate_decky("decky-01", repo=mock_repo)
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call_args = mock_repo.set_state.await_args[0]
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new_last_mutated = call_args[1]["config"]["deckies"][0]["last_mutated"]
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assert new_last_mutated >= before
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# ---------------------------------------------------------------------------
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# mutate_all
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# ---------------------------------------------------------------------------
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@pytest.mark.asyncio
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class TestMutateAll:
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async def test_no_state_returns_early(self, mock_repo):
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mock_repo.get_state.return_value = None
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with patch("decnet.mutator.engine.mutate_decky") as mock_mutate:
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await mutate_all(repo=mock_repo)
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mock_mutate.assert_not_called()
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async def test_force_mutates_all_deckies(self, mock_repo):
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cfg = _make_config(deckies=[_make_decky("d1"), _make_decky("d2")])
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.mutate_decky", new_callable=AsyncMock, return_value=True) as mock_mutate:
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await mutate_all(repo=mock_repo, force=True)
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assert mock_mutate.call_count == 2
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async def test_skips_decky_not_yet_due(self, mock_repo):
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# last_mutated = now, interval = 30 min → not due
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now = time.time()
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cfg = _make_config(deckies=[_make_decky(mutate_interval=30, last_mutated=now)])
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.mutate_decky") as mock_mutate:
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await mutate_all(repo=mock_repo, force=False)
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mock_mutate.assert_not_called()
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async def test_mutates_decky_that_is_due(self, mock_repo):
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# last_mutated = 2 hours ago, interval = 30 min → due
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old_ts = time.time() - 7200
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cfg = _make_config(deckies=[_make_decky(mutate_interval=30, last_mutated=old_ts)])
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mock_repo.get_state.return_value = {"config": cfg.model_dump(), "compose_path": "c.yml"}
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with patch("decnet.mutator.engine.mutate_decky", new_callable=AsyncMock, return_value=True) as mock_mutate:
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await mutate_all(repo=mock_repo, force=False)
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mock_mutate.assert_called_once()
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# ---------------------------------------------------------------------------
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# _compose_with_retry (Sync tests, keep as is or minimal update)
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# ---------------------------------------------------------------------------
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class TestComposeWithRetry:
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def test_succeeds_on_first_attempt(self):
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result = MagicMock(returncode=0, stdout="done\n")
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with patch("decnet.engine.deployer.subprocess.run", return_value=result) as mock_run:
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_compose_with_retry("up", "-d", compose_file=Path("compose.yml"))
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mock_run.assert_called_once()
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def test_retries_on_failure_then_succeeds(self):
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fail = MagicMock(returncode=1, stdout="", stderr="transient error")
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ok = MagicMock(returncode=0, stdout="", stderr="")
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with patch("decnet.engine.deployer.subprocess.run", side_effect=[fail, ok]) as mock_run, \
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patch("decnet.engine.deployer.time.sleep"):
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_compose_with_retry("up", "-d", compose_file=Path("compose.yml"), retries=3)
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assert mock_run.call_count == 2
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