mirror of
https://github.com/jpawlowski/hass.tibber_prices.git
synced 2026-03-30 05:13:40 +00:00
74789877ff
Fixed test issues: - test_resource_cleanup.py: Use AsyncMock for async_unload_entry (was MagicMock, caused TypeError with async context) - Added # noqa: SLF001 comments to all private member access in tests (18 instances - legitimate test access patterns) Test files updated: - test_resource_cleanup.py (AsyncMock fix) - test_interval_pool_memory_leak.py (8 noqa comments) - test_interval_pool_optimization.py (4 noqa comments) Impact: All tests pass linting, async tests execute correctly.
404 lines
15 KiB
Python
404 lines
15 KiB
Python
"""
|
|
Tests for memory leak prevention in interval pool.
|
|
|
|
This test module verifies that touch operations don't cause memory leaks by:
|
|
1. Reusing existing interval dicts (Python references, not copies)
|
|
2. Dead intervals being cleaned up by GC
|
|
3. Serialization filtering out dead intervals from storage
|
|
"""
|
|
|
|
import json
|
|
from datetime import UTC, datetime
|
|
|
|
import pytest
|
|
|
|
from custom_components.tibber_prices.interval_pool.pool import (
|
|
TibberPricesIntervalPool,
|
|
)
|
|
|
|
|
|
@pytest.fixture
|
|
def pool() -> TibberPricesIntervalPool:
|
|
"""Create a shared interval pool for testing (single-home architecture)."""
|
|
return TibberPricesIntervalPool(home_id="test_home_id")
|
|
|
|
|
|
@pytest.fixture
|
|
def sample_intervals() -> list[dict]:
|
|
"""Create 24 sample intervals (1 day)."""
|
|
base_time = datetime(2025, 11, 25, 0, 0, 0, tzinfo=UTC)
|
|
return [
|
|
{
|
|
"startsAt": (base_time.replace(hour=h)).isoformat(),
|
|
"total": 10.0 + h,
|
|
"energy": 8.0 + h,
|
|
"tax": 2.0,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
|
|
def test_touch_operation_reuses_existing_intervals(
|
|
pool: TibberPricesIntervalPool,
|
|
) -> None:
|
|
"""Test that touch operations reuse existing interval dicts (references, not copies)."""
|
|
# home_id not needed (single-home architecture)
|
|
fetch_time_1 = "2025-11-25T10:00:00+01:00"
|
|
fetch_time_2 = "2025-11-25T10:15:00+01:00"
|
|
|
|
# Create sample intervals for this test
|
|
sample_intervals = [
|
|
{
|
|
"startsAt": datetime(2025, 11, 25, h, 0, 0, tzinfo=UTC).isoformat(),
|
|
"total": 10.0 + h,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
# First fetch: Add intervals
|
|
pool._add_intervals(sample_intervals, fetch_time_1) # noqa: SLF001
|
|
|
|
# Direct property access (single-home architecture)
|
|
fetch_groups = pool._fetch_groups # noqa: SLF001
|
|
|
|
# Verify: 1 fetch group with 24 intervals
|
|
assert len(fetch_groups) == 1
|
|
assert len(fetch_groups[0]["intervals"]) == 24
|
|
|
|
# Get reference to first interval
|
|
first_interval_original = fetch_groups[0]["intervals"][0]
|
|
original_id = id(first_interval_original)
|
|
|
|
# Second fetch: Touch same intervals
|
|
pool._add_intervals(sample_intervals, fetch_time_2) # noqa: SLF001
|
|
|
|
# Verify: Now we have 2 fetch groups
|
|
assert len(fetch_groups) == 2
|
|
|
|
# Get reference to first interval from TOUCH group
|
|
first_interval_touched = fetch_groups[1]["intervals"][0]
|
|
touched_id = id(first_interval_touched)
|
|
|
|
# CRITICAL: Should be SAME object (same memory address)
|
|
assert original_id == touched_id, f"Memory addresses differ: {original_id} != {touched_id}"
|
|
assert first_interval_original is first_interval_touched, "Touch should reuse existing dict, not create copy"
|
|
|
|
|
|
def test_touch_operation_leaves_dead_intervals_in_old_group(
|
|
pool: TibberPricesIntervalPool,
|
|
) -> None:
|
|
"""Test that touch operations leave 'dead' intervals in old fetch groups."""
|
|
# home_id not needed (single-home architecture)
|
|
fetch_time_1 = "2025-11-25T10:00:00+01:00"
|
|
fetch_time_2 = "2025-11-25T10:15:00+01:00"
|
|
|
|
# Create sample intervals
|
|
sample_intervals = [
|
|
{
|
|
"startsAt": datetime(2025, 11, 25, h, 0, 0, tzinfo=UTC).isoformat(),
|
|
"total": 10.0 + h,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
# First fetch
|
|
pool._add_intervals(sample_intervals, fetch_time_1) # noqa: SLF001
|
|
# Direct property access (single-home architecture)
|
|
fetch_groups = pool._fetch_groups # noqa: SLF001
|
|
|
|
# Second fetch (touch all intervals)
|
|
pool._add_intervals(sample_intervals, fetch_time_2) # noqa: SLF001
|
|
|
|
# BEFORE GC cleanup:
|
|
# - Old group still has 24 intervals (but they're all "dead" - index points elsewhere)
|
|
# - Touch group has 24 intervals (living - index points here)
|
|
|
|
assert len(fetch_groups) == 2, "Should have 2 fetch groups"
|
|
assert len(fetch_groups[0]["intervals"]) == 24, "Old group should still have intervals (dead)"
|
|
assert len(fetch_groups[1]["intervals"]) == 24, "Touch group should have intervals (living)"
|
|
|
|
# Verify index points to touch group (not old group)
|
|
timestamp_index = pool._timestamp_index # noqa: SLF001
|
|
first_key = sample_intervals[0]["startsAt"][:19]
|
|
index_entry = timestamp_index[first_key]
|
|
|
|
assert index_entry["fetch_group_index"] == 1, "Index should point to touch group"
|
|
|
|
|
|
def test_gc_cleanup_removes_dead_intervals(
|
|
pool: TibberPricesIntervalPool,
|
|
) -> None:
|
|
"""Test that GC cleanup removes dead intervals from old fetch groups."""
|
|
# home_id not needed (single-home architecture)
|
|
fetch_time_1 = "2025-11-25T10:00:00+01:00"
|
|
fetch_time_2 = "2025-11-25T10:15:00+01:00"
|
|
|
|
# Create sample intervals
|
|
sample_intervals = [
|
|
{
|
|
"startsAt": datetime(2025, 11, 25, h, 0, 0, tzinfo=UTC).isoformat(),
|
|
"total": 10.0 + h,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
# First fetch
|
|
pool._add_intervals(sample_intervals, fetch_time_1) # noqa: SLF001
|
|
|
|
# Second fetch (touch all intervals)
|
|
pool._add_intervals(sample_intervals, fetch_time_2) # noqa: SLF001
|
|
|
|
# Direct property access (single-home architecture)
|
|
fetch_groups = pool._fetch_groups # noqa: SLF001
|
|
timestamp_index = pool._timestamp_index # noqa: SLF001
|
|
|
|
# Before cleanup: old group has 24 intervals
|
|
assert len(fetch_groups[0]["intervals"]) == 24, "Before cleanup"
|
|
|
|
# Run GC cleanup explicitly
|
|
dead_count = pool._gc_cleanup_dead_intervals(fetch_groups, timestamp_index) # noqa: SLF001
|
|
|
|
# Verify: 24 dead intervals were removed
|
|
assert dead_count == 24, f"Expected 24 dead intervals, got {dead_count}"
|
|
|
|
# After cleanup: old group should be empty
|
|
assert len(fetch_groups[0]["intervals"]) == 0, "Old group should be empty after cleanup"
|
|
|
|
# Touch group still has 24 living intervals
|
|
assert len(fetch_groups[1]["intervals"]) == 24, "Touch group should still have intervals"
|
|
|
|
|
|
def test_serialization_excludes_dead_intervals(
|
|
pool: TibberPricesIntervalPool,
|
|
) -> None:
|
|
"""Test that to_dict() excludes dead intervals from serialization."""
|
|
# home_id not needed (single-home architecture)
|
|
fetch_time_1 = "2025-11-25T10:00:00+01:00"
|
|
fetch_time_2 = "2025-11-25T10:15:00+01:00"
|
|
|
|
# Create sample intervals
|
|
sample_intervals = [
|
|
{
|
|
"startsAt": datetime(2025, 11, 25, h, 0, 0, tzinfo=UTC).isoformat(),
|
|
"total": 10.0 + h,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
# First fetch
|
|
pool._add_intervals(sample_intervals, fetch_time_1) # noqa: SLF001
|
|
|
|
# Second fetch (touch all intervals)
|
|
pool._add_intervals(sample_intervals, fetch_time_2) # noqa: SLF001
|
|
|
|
# Serialize WITHOUT running GC cleanup first
|
|
serialized = pool.to_dict()
|
|
|
|
# Verify serialization structure
|
|
assert "fetch_groups" in serialized
|
|
assert "home_id" in serialized
|
|
fetch_groups = serialized["fetch_groups"]
|
|
|
|
# CRITICAL: Should only serialize touch group (living intervals)
|
|
# Old group with all dead intervals should NOT be serialized
|
|
assert len(fetch_groups) == 1, "Should only serialize groups with living intervals"
|
|
|
|
# Touch group should have all 24 intervals
|
|
assert len(fetch_groups[0]["intervals"]) == 24, "Touch group should have all intervals"
|
|
|
|
# Verify JSON size is reasonable (not 2x the size)
|
|
json_str = json.dumps(serialized)
|
|
json_size = len(json_str)
|
|
# Each interval is ~100-150 bytes, 24 intervals = ~2.4-3.6 KB
|
|
# With metadata + structure, expect < 5 KB
|
|
assert json_size < 5000, f"JSON too large: {json_size} bytes (expected < 5000)"
|
|
|
|
|
|
def test_repeated_touch_operations_dont_grow_storage(
|
|
pool: TibberPricesIntervalPool,
|
|
) -> None:
|
|
"""Test that repeated touch operations don't grow storage size unbounded."""
|
|
# home_id not needed (single-home architecture)
|
|
|
|
# Create sample intervals
|
|
sample_intervals = [
|
|
{
|
|
"startsAt": datetime(2025, 11, 25, h, 0, 0, tzinfo=UTC).isoformat(),
|
|
"total": 10.0 + h,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
# Simulate 10 re-fetches of the same intervals
|
|
for i in range(10):
|
|
fetch_time = f"2025-11-25T{10 + i}:00:00+01:00"
|
|
pool._add_intervals(sample_intervals, fetch_time) # noqa: SLF001
|
|
|
|
# Memory state: 10 fetch groups (9 empty, 1 with all intervals)
|
|
# Direct property access (single-home architecture)
|
|
fetch_groups = pool._fetch_groups # noqa: SLF001
|
|
assert len(fetch_groups) == 10, "Should have 10 fetch groups in memory"
|
|
|
|
# Total intervals in memory: 240 references (24 per group, mostly dead)
|
|
total_refs = sum(len(g["intervals"]) for g in fetch_groups)
|
|
assert total_refs == 24 * 10, "Memory should have 240 interval references"
|
|
|
|
# Serialize (filters dead intervals)
|
|
serialized = pool.to_dict()
|
|
serialized_groups = serialized["fetch_groups"]
|
|
|
|
# Storage should only have 1 group with 24 living intervals
|
|
assert len(serialized_groups) == 1, "Should only serialize 1 group (with living intervals)"
|
|
assert len(serialized_groups[0]["intervals"]) == 24, "Should only have 24 living intervals"
|
|
|
|
# Verify storage size is bounded
|
|
json_str = json.dumps(serialized)
|
|
json_size = len(json_str)
|
|
# Should still be < 10 KB even after 10 fetches
|
|
assert json_size < 10000, f"Storage grew unbounded: {json_size} bytes (expected < 10000)"
|
|
|
|
|
|
def test_gc_cleanup_with_partial_touch(
|
|
pool: TibberPricesIntervalPool,
|
|
sample_intervals: list[dict],
|
|
) -> None:
|
|
"""Test GC cleanup when only some intervals are touched (partial overlap)."""
|
|
# home_id not needed (single-home architecture)
|
|
fetch_time_1 = "2025-11-25T10:00:00+01:00"
|
|
fetch_time_2 = "2025-11-25T10:15:00+01:00"
|
|
|
|
# First fetch: All 24 intervals
|
|
pool._add_intervals(sample_intervals, fetch_time_1) # noqa: SLF001
|
|
|
|
# Second fetch: Only first 12 intervals (partial touch)
|
|
partial_intervals = sample_intervals[:12]
|
|
pool._add_intervals(partial_intervals, fetch_time_2) # noqa: SLF001
|
|
|
|
# Direct property access (single-home architecture)
|
|
fetch_groups = pool._fetch_groups # noqa: SLF001
|
|
timestamp_index = pool._timestamp_index # noqa: SLF001
|
|
|
|
# Before cleanup:
|
|
# - Old group: 24 intervals (12 dead, 12 living)
|
|
# - Touch group: 12 intervals (all living)
|
|
assert len(fetch_groups[0]["intervals"]) == 24, "Old group should have 24 intervals"
|
|
assert len(fetch_groups[1]["intervals"]) == 12, "Touch group should have 12 intervals"
|
|
|
|
# Run GC cleanup
|
|
dead_count = pool._gc_cleanup_dead_intervals(fetch_groups, timestamp_index) # noqa: SLF001
|
|
|
|
# Should clean 12 dead intervals (the ones that were touched)
|
|
assert dead_count == 12, f"Expected 12 dead intervals, got {dead_count}"
|
|
|
|
# After cleanup:
|
|
# - Old group: 12 intervals (the ones that were NOT touched)
|
|
# - Touch group: 12 intervals (unchanged)
|
|
assert len(fetch_groups[0]["intervals"]) == 12, "Old group should have 12 living intervals left"
|
|
assert len(fetch_groups[1]["intervals"]) == 12, "Touch group should still have 12 intervals"
|
|
|
|
|
|
def test_memory_leak_prevention_integration(
|
|
pool: TibberPricesIntervalPool,
|
|
) -> None:
|
|
"""Integration test: Verify no memory leak over multiple operations."""
|
|
# home_id not needed (single-home architecture)
|
|
|
|
# Create sample intervals
|
|
sample_intervals = [
|
|
{
|
|
"startsAt": datetime(2025, 11, 25, h, 0, 0, tzinfo=UTC).isoformat(),
|
|
"total": 10.0 + h,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
# Simulate typical usage pattern over time
|
|
# Day 1: Fetch 24 intervals
|
|
pool._add_intervals(sample_intervals, "2025-11-25T10:00:00+01:00") # noqa: SLF001
|
|
|
|
# Day 1: Re-fetch (touch) - updates fetch time
|
|
pool._add_intervals(sample_intervals, "2025-11-25T14:00:00+01:00") # noqa: SLF001
|
|
|
|
# Day 1: Re-fetch (touch) again
|
|
pool._add_intervals(sample_intervals, "2025-11-25T18:00:00+01:00") # noqa: SLF001
|
|
|
|
# Direct property access (single-home architecture)
|
|
fetch_groups = pool._fetch_groups # noqa: SLF001
|
|
timestamp_index = pool._timestamp_index # noqa: SLF001
|
|
|
|
# Memory state BEFORE cleanup:
|
|
# - 3 fetch groups
|
|
# - Total: 72 interval references (24 per group)
|
|
# - Dead: 48 (first 2 groups have all dead intervals)
|
|
# - Living: 24 (last group has all living intervals)
|
|
assert len(fetch_groups) == 3, "Should have 3 fetch groups"
|
|
total_refs = sum(len(g["intervals"]) for g in fetch_groups)
|
|
assert total_refs == 72, "Should have 72 interval references in memory"
|
|
|
|
# Run GC cleanup
|
|
dead_count = pool._gc_cleanup_dead_intervals(fetch_groups, timestamp_index) # noqa: SLF001
|
|
assert dead_count == 48, "Should clean 48 dead intervals"
|
|
|
|
# Memory state AFTER cleanup:
|
|
# - 3 fetch groups (2 empty, 1 with all intervals)
|
|
# - Total: 24 interval references
|
|
# - Dead: 0
|
|
# - Living: 24
|
|
total_refs_after = sum(len(g["intervals"]) for g in fetch_groups)
|
|
assert total_refs_after == 24, "Should only have 24 interval references after cleanup"
|
|
|
|
# Verify serialization excludes empty groups
|
|
serialized = pool.to_dict()
|
|
serialized_groups = serialized["fetch_groups"]
|
|
|
|
# Should only serialize 1 group (the one with living intervals)
|
|
assert len(serialized_groups) == 1, "Should only serialize groups with living intervals"
|
|
assert len(serialized_groups[0]["intervals"]) == 24, "Should have 24 intervals"
|
|
|
|
|
|
def test_interval_identity_preserved_across_touch(
|
|
pool: TibberPricesIntervalPool,
|
|
) -> None:
|
|
"""Test that interval dict identity (memory address) is preserved across touch."""
|
|
# home_id not needed (single-home architecture)
|
|
|
|
# Create sample intervals
|
|
sample_intervals = [
|
|
{
|
|
"startsAt": datetime(2025, 11, 25, h, 0, 0, tzinfo=UTC).isoformat(),
|
|
"total": 10.0 + h,
|
|
}
|
|
for h in range(24)
|
|
]
|
|
|
|
# First fetch
|
|
pool._add_intervals(sample_intervals, "2025-11-25T10:00:00+01:00") # noqa: SLF001
|
|
|
|
# Direct property access (single-home architecture)
|
|
fetch_groups = pool._fetch_groups # noqa: SLF001
|
|
|
|
# Collect memory addresses of intervals in original group
|
|
original_ids = [id(interval) for interval in fetch_groups[0]["intervals"]]
|
|
|
|
# Second fetch (touch)
|
|
pool._add_intervals(sample_intervals, "2025-11-25T10:15:00+01:00") # noqa: SLF001
|
|
|
|
# Collect memory addresses of intervals in touch group
|
|
touched_ids = [id(interval) for interval in fetch_groups[1]["intervals"]]
|
|
|
|
# CRITICAL: All memory addresses should be identical (same objects)
|
|
assert original_ids == touched_ids, "Touch should preserve interval identity (memory addresses)"
|
|
|
|
# Third fetch (touch again)
|
|
pool._add_intervals(sample_intervals, "2025-11-25T10:30:00+01:00") # noqa: SLF001
|
|
|
|
# New touch group should also reference the SAME original objects
|
|
touched_ids_2 = [id(interval) for interval in fetch_groups[2]["intervals"]]
|
|
assert original_ids == touched_ids_2, "Multiple touches should preserve original identity"
|
|
|
|
# Verify: All 3 groups have references to THE SAME interval dicts
|
|
# Only the list entries differ (8 bytes each), not the interval dicts (600+ bytes each)
|
|
for i in range(24):
|
|
assert fetch_groups[0]["intervals"][i] is fetch_groups[1]["intervals"][i] is fetch_groups[2]["intervals"][i], (
|
|
f"Interval {i} should be the same object across all groups"
|
|
)
|