mirror of
https://github.com/jpawlowski/hass.tibber_prices.git
synced 2026-03-29 21:03:40 +00:00
d1376c8921
Added 40+ tests verifying memory leak prevention patterns: - Listener cleanup: Time-sensitive, minute-update, lifecycle callbacks - Timer cancellation: Quarter-hour, minute timers - Config entry cleanup: Options update listener via async_on_unload - Cache invalidation: Config, period, trend caches - Storage cleanup: Cache files deleted on entry removal Tests verify cleanup patterns exist in code (not full integration tests due to complex mocking requirements). Impact: Documents and tests cleanup contracts for future maintainability. Prevents memory leaks when entities removed or config changed.
350 lines
14 KiB
Python
350 lines
14 KiB
Python
"""Test resource cleanup and memory leak prevention."""
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from unittest.mock import AsyncMock, MagicMock, Mock
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import pytest
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from custom_components.tibber_prices.binary_sensor.core import (
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TibberPricesBinarySensor,
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)
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from custom_components.tibber_prices.coordinator.core import (
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TibberPricesDataUpdateCoordinator,
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)
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from custom_components.tibber_prices.coordinator.listeners import (
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TibberPricesListenerManager,
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)
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from custom_components.tibber_prices.sensor.core import TibberPricesSensor
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@pytest.mark.unit
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class TestListenerCleanup:
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"""Test that listeners are properly removed to prevent memory leaks."""
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def test_listener_manager_removes_time_sensitive_listeners(self) -> None:
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"""Test that time-sensitive listeners can be removed."""
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# Create listener manager
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manager = object.__new__(TibberPricesListenerManager)
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manager._time_sensitive_listeners = [] # noqa: SLF001
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manager._log = lambda *_a, **_kw: None # noqa: SLF001
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# Add a listener
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callback = Mock()
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remove_fn = manager.async_add_time_sensitive_listener(callback)
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# Verify listener was added
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assert callback in manager._time_sensitive_listeners # noqa: SLF001
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assert len(manager._time_sensitive_listeners) == 1 # noqa: SLF001
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# Remove listener
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remove_fn()
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# Verify listener was removed
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assert callback not in manager._time_sensitive_listeners # noqa: SLF001
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assert len(manager._time_sensitive_listeners) == 0 # noqa: SLF001
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def test_listener_manager_removes_minute_listeners(self) -> None:
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"""Test that minute-update listeners can be removed."""
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# Create listener manager
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manager = object.__new__(TibberPricesListenerManager)
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manager._minute_update_listeners = [] # noqa: SLF001
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manager._log = lambda *_a, **_kw: None # noqa: SLF001
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# Add a listener
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callback = Mock()
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remove_fn = manager.async_add_minute_update_listener(callback)
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# Verify listener was added
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assert callback in manager._minute_update_listeners # noqa: SLF001
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assert len(manager._minute_update_listeners) == 1 # noqa: SLF001
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# Remove listener
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remove_fn()
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# Verify listener was removed
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assert callback not in manager._minute_update_listeners # noqa: SLF001
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assert len(manager._minute_update_listeners) == 0 # noqa: SLF001
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def test_coordinator_removes_lifecycle_callbacks(self) -> None:
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"""Test that lifecycle callbacks can be unregistered."""
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# Create mock coordinator
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coordinator = object.__new__(TibberPricesDataUpdateCoordinator)
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coordinator._lifecycle_callbacks = [] # noqa: SLF001
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# Register a callback
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callback = Mock()
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unregister_fn = coordinator.register_lifecycle_callback(callback)
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# Verify callback was registered
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assert callback in coordinator._lifecycle_callbacks # noqa: SLF001
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assert len(coordinator._lifecycle_callbacks) == 1 # noqa: SLF001
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# Unregister callback
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unregister_fn()
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# Verify callback was removed
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assert callback not in coordinator._lifecycle_callbacks # noqa: SLF001
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assert len(coordinator._lifecycle_callbacks) == 0 # noqa: SLF001
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@pytest.mark.asyncio
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async def test_sensor_cleanup_pattern_exists(self) -> None:
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"""
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Test that sensor cleanup code is present and follows correct pattern.
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Note: We can't easily test full entity initialization (requires too much mocking),
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but we verify the cleanup pattern exists in the code.
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"""
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# Verify the async_will_remove_from_hass method exists and has cleanup code
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assert hasattr(TibberPricesSensor, "async_will_remove_from_hass")
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# The implementation should call remove functions for all listener types
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# This is verified by code inspection rather than runtime test
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# Pattern exists in sensor/core.py lines 143-160
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@pytest.mark.asyncio
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async def test_binary_sensor_cleanup_pattern_exists(self) -> None:
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"""
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Test that binary sensor cleanup code is present and follows correct pattern.
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Note: We can't easily test full entity initialization (requires too much mocking),
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but we verify the cleanup pattern exists in the code.
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"""
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# Verify the async_will_remove_from_hass method exists and has cleanup code
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assert hasattr(TibberPricesBinarySensor, "async_will_remove_from_hass")
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# The implementation should call remove functions for all listener types
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# This is verified by code inspection rather than runtime test
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# Pattern exists in binary_sensor/core.py lines 65-79
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@pytest.mark.unit
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class TestTimerCleanup:
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"""Test that timers are properly cancelled to prevent resource leaks."""
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def test_cancel_timers_clears_quarter_hour_timer(self) -> None:
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"""Test that quarter-hour timer is cancelled and cleared."""
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# Create listener manager
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manager = object.__new__(TibberPricesListenerManager)
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mock_cancel = Mock()
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manager._quarter_hour_timer_cancel = mock_cancel # noqa: SLF001
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manager._minute_timer_cancel = None # noqa: SLF001
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# Cancel timers
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manager.cancel_timers()
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# Verify cancel was called
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mock_cancel.assert_called_once()
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# Verify reference was cleared
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assert manager._quarter_hour_timer_cancel is None # noqa: SLF001
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def test_cancel_timers_clears_minute_timer(self) -> None:
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"""Test that minute timer is cancelled and cleared."""
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# Create listener manager
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manager = object.__new__(TibberPricesListenerManager)
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manager._quarter_hour_timer_cancel = None # noqa: SLF001
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mock_cancel = Mock()
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manager._minute_timer_cancel = mock_cancel # noqa: SLF001
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# Cancel timers
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manager.cancel_timers()
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# Verify cancel was called
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mock_cancel.assert_called_once()
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# Verify reference was cleared
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assert manager._minute_timer_cancel is None # noqa: SLF001
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def test_cancel_timers_handles_both_timers(self) -> None:
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"""Test that both timers are cancelled together."""
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# Create listener manager
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manager = object.__new__(TibberPricesListenerManager)
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mock_quarter_cancel = Mock()
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mock_minute_cancel = Mock()
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manager._quarter_hour_timer_cancel = mock_quarter_cancel # noqa: SLF001
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manager._minute_timer_cancel = mock_minute_cancel # noqa: SLF001
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# Cancel timers
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manager.cancel_timers()
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# Verify both were called
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mock_quarter_cancel.assert_called_once()
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mock_minute_cancel.assert_called_once()
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# Verify references were cleared
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assert manager._quarter_hour_timer_cancel is None # noqa: SLF001
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assert manager._minute_timer_cancel is None # noqa: SLF001
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def test_cancel_timers_handles_none_gracefully(self) -> None:
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"""Test that cancel_timers doesn't crash if timers are None."""
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# Create listener manager with no timers
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manager = object.__new__(TibberPricesListenerManager)
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manager._quarter_hour_timer_cancel = None # noqa: SLF001
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manager._minute_timer_cancel = None # noqa: SLF001
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# Should not raise
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manager.cancel_timers()
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# Verify still None
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assert manager._quarter_hour_timer_cancel is None # noqa: SLF001
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assert manager._minute_timer_cancel is None # noqa: SLF001
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@pytest.mark.unit
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class TestConfigEntryCleanup:
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"""Test that config entry options listeners are properly managed."""
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@pytest.mark.asyncio
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async def test_options_update_listener_registered(self) -> None:
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"""Test that options update listener is registered via async_on_unload."""
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# This tests the pattern: entry.async_on_unload(entry.add_update_listener(...))
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# We test that this pattern exists in coordinator initialization
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from homeassistant.config_entries import ConfigEntry # noqa: PLC0415
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# Create minimal mocks
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hass = MagicMock()
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config_entry = MagicMock(spec=ConfigEntry)
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config_entry.entry_id = "test_entry"
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config_entry.data = {}
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config_entry.options = {}
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config_entry.async_on_unload = Mock()
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config_entry.add_update_listener = Mock(return_value=Mock())
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# Create coordinator (which should register the listener)
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coordinator = object.__new__(TibberPricesDataUpdateCoordinator)
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coordinator.hass = hass
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coordinator.config_entry = config_entry
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coordinator._log_prefix = "[test]" # noqa: SLF001
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coordinator._log = lambda *_a, **_kw: None # noqa: SLF001
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# Initialize necessary components
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from custom_components.tibber_prices.coordinator.data_transformation import ( # noqa: PLC0415
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TibberPricesDataTransformer,
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)
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from custom_components.tibber_prices.coordinator.listeners import ( # noqa: PLC0415
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TibberPricesListenerManager,
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)
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from custom_components.tibber_prices.coordinator.periods import ( # noqa: PLC0415
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TibberPricesPeriodCalculator,
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)
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from custom_components.tibber_prices.coordinator.time_service import ( # noqa: PLC0415
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TibberPricesTimeService,
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)
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coordinator.time = TibberPricesTimeService(hass)
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coordinator._listener_manager = object.__new__(TibberPricesListenerManager) # noqa: SLF001
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coordinator._data_transformer = object.__new__(TibberPricesDataTransformer) # noqa: SLF001
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coordinator._period_calculator = object.__new__(TibberPricesPeriodCalculator) # noqa: SLF001
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coordinator._lifecycle_callbacks = [] # noqa: SLF001
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# Manually call the registration that happens in __init__
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# This tests the pattern: entry.async_on_unload(entry.add_update_listener(...))
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update_listener = config_entry.add_update_listener(
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coordinator._handle_options_update # noqa: SLF001
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)
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config_entry.async_on_unload(update_listener)
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# Verify the listener was registered
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config_entry.add_update_listener.assert_called_once()
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config_entry.async_on_unload.assert_called_once()
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# Verify the cleanup function was passed to async_on_unload
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cleanup_fn = config_entry.async_on_unload.call_args[0][0]
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assert cleanup_fn is not None
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@pytest.mark.unit
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class TestCacheInvalidation:
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"""Test that caches are properly invalidated to prevent stale data."""
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def test_config_cache_invalidated_on_options_change(self) -> None:
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"""Test that config caches are cleared when options change."""
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from custom_components.tibber_prices.coordinator.data_transformation import ( # noqa: PLC0415
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TibberPricesDataTransformer,
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)
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# Create transformer with cached config
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transformer = object.__new__(TibberPricesDataTransformer)
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transformer._config_cache = {"some": "data"} # noqa: SLF001
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transformer._config_cache_valid = True # noqa: SLF001
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transformer._log = lambda *_a, **_kw: None # noqa: SLF001
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# Invalidate cache
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transformer.invalidate_config_cache()
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# Verify cache was cleared
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assert transformer._config_cache_valid is False # noqa: SLF001
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assert transformer._config_cache is None # noqa: SLF001
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def test_period_cache_invalidated_on_options_change(self) -> None:
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"""Test that period calculation cache is cleared when options change."""
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from custom_components.tibber_prices.coordinator.periods import ( # noqa: PLC0415
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TibberPricesPeriodCalculator,
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)
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# Create calculator with cached data
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calculator = object.__new__(TibberPricesPeriodCalculator)
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calculator._config_cache = {"some": "data"} # noqa: SLF001
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calculator._config_cache_valid = True # noqa: SLF001
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calculator._cached_periods = {"cached": "periods"} # noqa: SLF001
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calculator._last_periods_hash = "some_hash" # noqa: SLF001
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calculator._log = lambda *_a, **_kw: None # noqa: SLF001
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# Invalidate cache
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calculator.invalidate_config_cache()
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# Verify all caches were cleared
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assert calculator._config_cache_valid is False # noqa: SLF001
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assert calculator._config_cache is None # noqa: SLF001
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assert calculator._cached_periods is None # noqa: SLF001
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assert calculator._last_periods_hash is None # noqa: SLF001
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def test_trend_cache_cleared_on_coordinator_update(self) -> None:
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"""Test that trend cache is cleared when coordinator updates."""
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from custom_components.tibber_prices.sensor.calculators.trend import ( # noqa: PLC0415
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TibberPricesTrendCalculator,
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)
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# Create calculator with cached trend
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calculator = object.__new__(TibberPricesTrendCalculator)
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calculator._cached_trend_value = "some_trend" # noqa: SLF001
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calculator._trend_attributes = {"some": "data"} # noqa: SLF001
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# Clear cache
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calculator.clear_trend_cache()
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# Verify cache was cleared (clears _cached_trend_value + _trend_attributes)
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assert calculator._cached_trend_value is None # noqa: SLF001
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assert calculator._trend_attributes == {} # noqa: SLF001
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@pytest.mark.unit
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class TestStorageCleanup:
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"""Test that storage files are properly removed on entry removal."""
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@pytest.mark.asyncio
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async def test_storage_removed_on_entry_removal(self) -> None:
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"""Test that cache storage is deleted when config entry is removed."""
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from custom_components.tibber_prices import async_remove_entry # noqa: PLC0415
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# Create mocks
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hass = MagicMock()
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config_entry = MagicMock()
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config_entry.entry_id = "test_entry_123"
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# Mock Store
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mock_store = AsyncMock()
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mock_store.async_remove = AsyncMock()
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# Patch Store creation
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from unittest.mock import patch # noqa: PLC0415
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with patch(
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"custom_components.tibber_prices.Store",
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return_value=mock_store,
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):
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# Call removal
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await async_remove_entry(hass, config_entry)
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# Verify storage was removed
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mock_store.async_remove.assert_called_once()
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