660 lines
24 KiB
Python
660 lines
24 KiB
Python
"""Tests for db.py, the async SQLite connection wrapper of NestQuest."""
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from __future__ import annotations
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import ast
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import asyncio
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import sqlite3
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import threading
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from pathlib import Path
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from typing import Any
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from unittest.mock import AsyncMock, MagicMock
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import pytest
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from conftest import make_hass
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from custom_components.nestquest import db as db_module
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from custom_components.nestquest.db import NestQuestDatabase
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def _run(coro):
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return asyncio.new_event_loop().run_until_complete(coro)
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def _make_hass_mock():
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hass = MagicMock()
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hass.async_add_executor_job = AsyncMock(side_effect=(lambda fn, *a: fn(*a)))
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return hass
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def _open_db(path) -> tuple[NestQuestDatabase, MagicMock]:
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hass = _make_hass_mock()
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database = NestQuestDatabase(hass)
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_run(database.open(path))
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return database, hass
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# ---------------------------------------------------------------------------
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# open(): pragmas, executor delegation, idempotence
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# ---------------------------------------------------------------------------
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def test_open_enables_wal_journal_mode(tmp_path) -> None:
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database, _hass = _open_db(tmp_path / "wal.db")
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row = _run(database.fetch_one("PRAGMA journal_mode"))
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assert row is not None and str(row[0]).lower() == "wal"
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_run(database.close())
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def test_open_enables_foreign_key_enforcement(tmp_path) -> None:
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database, _hass = _open_db(tmp_path / "fk.db")
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row = _run(database.fetch_one("PRAGMA foreign_keys"))
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assert row is not None and int(row[0]) == 1
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_run(database.close())
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def test_open_delegates_connection_to_executor(tmp_path) -> None:
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hass = _make_hass_mock()
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database = NestQuestDatabase(hass)
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_run(database.open(tmp_path / "exec.db"))
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first_call = hass.async_add_executor_job.call_args_list[0]
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assert callable(first_call.args[0])
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_run(database.close())
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def test_open_twice_returns_same_wrapper_without_second_connect(tmp_path) -> None:
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path = tmp_path / "once.db"
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hass = _make_hass_mock()
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database = NestQuestDatabase(hass)
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first = _run(database.open(path))
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second = _run(database.open(path))
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assert first is database
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assert second is database
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assert database.connected is True
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opens = [
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c
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for c in hass.async_add_executor_job.call_args_list
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if getattr(c.args[0], "__name__", "") == "_open"
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]
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assert len(opens) == 1
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_run(database.close())
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def test_open_accepts_str_path(tmp_path) -> None:
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database, _hass = _open_db(str(tmp_path / "str.db"))
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assert database.connected is True
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_run(database.close())
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# ---------------------------------------------------------------------------
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# Executor delegation: every sqlite3 call happens off the event loop
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# ---------------------------------------------------------------------------
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def test_every_method_routes_sqlite3_through_executor(tmp_path) -> None:
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"""Each wrapper call must go via hass.async_add_executor_job."""
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database, hass = _open_db(tmp_path / "route.db")
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calls_before = hass.async_add_executor_job.await_count
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_run(database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)"))
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_run(database.execute("INSERT INTO t (name) VALUES (?)", ("a",)))
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_run(database.execute_many("INSERT INTO t (name) VALUES (?)", [("b",), ("c",)]))
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row = _run(database.fetch_one("SELECT name FROM t WHERE id = 1"))
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rows = _run(database.fetch_all("SELECT name FROM t ORDER BY id"))
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assert row == ("a",)
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assert rows == [("a",), ("b",), ("c",)]
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assert hass.async_add_executor_job.await_count == calls_before + 5
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_run(database.close())
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async def test_every_wrapper_call_awaits_executor_job(tmp_path) -> None:
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"""The executor surface is awaited per wrapper call on a live loop."""
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hass = _make_hass_mock()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "loop.db")
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await database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY)")
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await database.fetch_one("SELECT 1")
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await database.fetch_all("SELECT 1")
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await database.execute_many("INSERT INTO t (id) VALUES (?)", [(1,)])
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async with database.transaction():
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pass
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assert hass.async_add_executor_job.await_count == 7
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assert all(callable(c.args[0]) for c in hass.async_add_executor_job.call_args_list)
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await database.close()
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async def test_public_methods_return_only_plain_data(tmp_path) -> None:
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"""execute/execute_many return plain dataclasses, never sqlite3 objects."""
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hass = _make_hass_mock()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "plain.db")
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result = await database.execute(
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"CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)"
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)
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assert not isinstance(result, (sqlite3.Connection, sqlite3.Cursor))
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insert = await database.execute("INSERT INTO t (name) VALUES (?)", ("a",))
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assert not isinstance(insert, (sqlite3.Connection, sqlite3.Cursor))
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assert insert.rowcount == 1
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assert insert.lastrowid == 1
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many = await database.execute_many(
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"INSERT INTO t (name) VALUES (?)", [("b",), ("c",)]
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)
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assert not isinstance(many, (sqlite3.Connection, sqlite3.Cursor))
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assert many.rowcount == 2
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row = await database.fetch_one("SELECT name FROM t WHERE id = 1")
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assert row == ("a",)
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rows = await database.fetch_all("SELECT name FROM t ORDER BY id")
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assert rows == [("a",), ("b",), ("c",)]
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for value in (*rows, row):
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assert not isinstance(value, sqlite3.Cursor)
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await database.close()
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async def test_no_sqlite3_call_on_event_loop_with_real_executor(tmp_path) -> None:
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"""With the conftest hass (real run_in_executor), queries still succeed."""
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hass, _registry = make_hass()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "real.db")
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await database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY)")
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assert await database.fetch_one("SELECT 1") == (1,)
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await database.close()
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async def test_real_executor_never_touches_loop_thread(tmp_path, monkeypatch) -> None:
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"""Every real sqlite3 call must run on a non-event-loop thread.
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sqlite3.connect is instrumented so a proxy wraps the connection and
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every cursor it hands out; each proxied call records the thread it ran
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on. A recorded thread id equal to the event-loop thread would mean a
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sqlite3 call crossed the executor boundary.
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"""
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loop_thread = threading.get_ident()
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recorded: list[int] = []
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guard = threading.Lock()
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def _note() -> None:
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with guard:
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recorded.append(threading.get_ident())
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class _Proxy:
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"""Generic proxy recording the thread of every attribute call."""
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def __init__(self, target: Any) -> None:
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object.__setattr__(self, "_target", target)
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def __getattr__(self, name: str):
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attr = getattr(object.__getattribute__(self, "_target"), name)
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if not callable(attr):
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return attr
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def _wrapped(*args, **kwargs):
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_note()
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result = attr(*args, **kwargs)
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if isinstance(result, sqlite3.Cursor):
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return _Proxy(result)
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return result
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return _wrapped
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real_connect = sqlite3.connect
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def _traced_connect(*args, **kwargs):
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return _Proxy(real_connect(*args, **kwargs))
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monkeypatch.setattr(db_module.sqlite3, "connect", _traced_connect)
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hass, _registry = make_hass()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "threads.db")
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await database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY)")
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await database.execute("INSERT INTO t (id) VALUES (?)", (1,))
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await database.execute_many("INSERT INTO t (id) VALUES (?)", [(2,), (3,)])
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assert await database.fetch_one("SELECT id FROM t WHERE id = 1") == (1,)
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assert await database.fetch_all("SELECT id FROM t") == [(1,), (2,), (3,)]
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async with database.transaction():
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await database.execute("INSERT INTO t (id) VALUES (?)", (4,))
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await database.close()
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assert recorded, "expected at least one recorded sqlite3 call"
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assert loop_thread not in recorded, (
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f"sqlite3 call ran on the event-loop thread {loop_thread}; "
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f"recorded threads: {sorted(set(recorded))}"
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)
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# ---------------------------------------------------------------------------
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# Source scan: sqlite3.* only inside executor-delegated functions
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# ---------------------------------------------------------------------------
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def _iter_with_scope(node, chain):
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"""Yield (node, enclosing-function chain), depth-first."""
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for child in ast.iter_child_nodes(node):
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yield child, chain
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next_chain = chain + (child,) if isinstance(
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child, (ast.FunctionDef, ast.AsyncFunctionDef)
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) else chain
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yield from _iter_with_scope(child, next_chain)
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def test_db_sqlite3_calls_only_inside_executor_delegated_functions() -> None:
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"""Every sqlite3.* call in db.py sits inside an executor-delegating function.
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A function is executor-delegating when it (or, for nested closures, any of
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its enclosing functions) passes work to ``hass.async_add_executor_job``.
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"""
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source = Path(db_module.__file__).read_text(encoding="utf-8")
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tree = ast.parse(source, filename=str(db_module.__file__))
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delegated = {
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node.name
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for node in ast.walk(tree)
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if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef))
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and any(
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isinstance(sub, ast.Call)
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and isinstance(sub.func, ast.Attribute)
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and sub.func.attr == "async_add_executor_job"
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for sub in ast.walk(node)
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)
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}
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assert delegated, "expected executor-delegated functions in db.py"
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violations = []
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for node, chain in _iter_with_scope(tree, ()):
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if (
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isinstance(node, ast.Call)
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and isinstance(node.func, ast.Attribute)
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and isinstance(node.func.value, ast.Name)
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and node.func.value.id == "sqlite3"
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and not any(f.name in delegated for f in chain)
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):
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violations.append((node.lineno, node.func.attr))
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assert violations == [], (
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f"Direct sqlite3 calls outside executor-delegated functions: {violations}"
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)
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def test_package_wide_sqlite3_scan_excludes_only_db_module() -> None:
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"""The package-wide store scan exempts exactly the db module."""
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pkg_dir = Path(db_module.__file__).parent
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scanned = [p.name for p in pkg_dir.glob("*.py") if p.name != "db.py"]
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assert scanned, "expected other package modules to be scanned"
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assert "db.py" not in scanned
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# ---------------------------------------------------------------------------
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# close(): idempotence and post-close errors
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# ---------------------------------------------------------------------------
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def test_close_is_idempotent(tmp_path) -> None:
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database, hass = _open_db(tmp_path / "idem.db")
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_run(database.close())
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assert database.connected is False
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_run(database.close())
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assert database.connected is False
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assert hass.async_add_executor_job.await_count == 2
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assert database.rowcount == -1
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assert database.lastrowid is None
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def test_operations_after_close_raise_clear_error(tmp_path) -> None:
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database, _hass = _open_db(tmp_path / "closed.db")
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_run(database.close())
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async def _txn():
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async with database.transaction():
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pass
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with pytest.raises(RuntimeError, match="closed"):
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_run(database.execute("SELECT 1"))
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with pytest.raises(RuntimeError, match="closed"):
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_run(database.fetch_one("SELECT 1"))
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with pytest.raises(RuntimeError, match="closed"):
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_run(database.fetch_all("SELECT 1"))
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with pytest.raises(RuntimeError, match="closed"):
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_run(database.execute_many("SELECT 1", []))
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with pytest.raises(RuntimeError, match="closed"):
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_run(_txn())
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# ---------------------------------------------------------------------------
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# Transactions: commit on success, rollback on exception
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# ---------------------------------------------------------------------------
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def test_transaction_commits_on_success(tmp_path) -> None:
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database, _hass = _open_db(tmp_path / "commit.db")
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_run(database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)"))
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async def _block():
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async with database.transaction():
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await database.execute("INSERT INTO t (name) VALUES (?)", ("kept",))
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_run(_block())
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assert _run(database.fetch_all("SELECT name FROM t")) == [("kept",)]
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_run(database.close())
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def test_transaction_rolls_back_on_exception(tmp_path) -> None:
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database, _hass = _open_db(tmp_path / "rollback.db")
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_run(database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)"))
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_run(database.execute("INSERT INTO t (name) VALUES (?)", ("before",)))
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async def _block():
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with pytest.raises(ValueError, match="boom"):
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async with database.transaction():
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await database.execute(
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"INSERT INTO t (name) VALUES (?)", ("dropped",)
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)
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raise ValueError("boom")
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_run(_block())
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assert _run(database.fetch_all("SELECT name FROM t")) == [("before",)]
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_run(database.close())
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async def test_transaction_persists_across_connections(tmp_path) -> None:
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"""A committed transaction is visible to a brand-new connection."""
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hass, _registry = make_hass()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "persist.db")
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await database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)")
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async with database.transaction():
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await database.execute("INSERT INTO t (name) VALUES (?)", ("kept",))
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await database.close()
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other = NestQuestDatabase(hass)
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await other.open(tmp_path / "persist.db")
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assert await other.fetch_all("SELECT name FROM t") == [("kept",)]
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await other.close()
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# ---------------------------------------------------------------------------
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# Serialization: one lock per wrapper, no cross-commit interleaving
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# ---------------------------------------------------------------------------
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async def test_concurrent_writers_do_not_interleave_commits(tmp_path) -> None:
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"""Real-executor proof: nothing commits inside another transaction's span.
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A transaction runner repeatedly counts rows, inserts, and counts again
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inside BEGIN..COMMIT; the count must grow by exactly one, proving no
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other writer committed in between even though several writer tasks fire
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statements concurrently on real executor threads. Statements issued
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while a transaction is open queue behind it on the wrapper lock.
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"""
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hass, _registry = make_hass()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "serial.db")
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await database.execute("CREATE TABLE t (kind TEXT, seq INTEGER)")
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tx_rounds, writers, writer_rounds = 6, 5, 8
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total = tx_rounds + writers * writer_rounds
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async def _tx_runner() -> None:
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for rnd in range(tx_rounds):
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async with database.transaction():
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rows = await database.fetch_all("SELECT COUNT(*) FROM t")
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seen = rows[0][0] if rows else -1
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await database.execute(
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"INSERT INTO t (kind, seq) VALUES (?, ?)", ("tx", rnd)
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)
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rows = await database.fetch_all("SELECT COUNT(*) FROM t")
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grown = rows[0][0] if rows else -1
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if grown != seen + 1:
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raise AssertionError(
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f"interleaved commit: count {seen} -> {grown} "
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f"in tx round {rnd}"
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)
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async def _writer(worker: int) -> None:
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for rnd in range(writer_rounds):
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await database.execute(
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"INSERT INTO t (kind, seq) VALUES (?, ?)", ("w", worker)
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)
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await asyncio.gather(
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_tx_runner(), *(_writer(w) for w in range(writers))
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)
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rows = await database.fetch_all("SELECT COUNT(*) FROM t")
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assert rows[0][0] == total, f"expected {total} rows, got {rows[0][0]}"
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await database.close()
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async def test_transaction_span_excludes_concurrent_transaction(tmp_path) -> None:
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"""A second transaction caller is rejected with a clear error."""
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hass, _registry = make_hass()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "reject.db")
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await database.execute("CREATE TABLE t (id INTEGER)")
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started = asyncio.Event()
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async def _first() -> None:
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async with database.transaction():
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started.set()
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await asyncio.sleep(0.05)
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first = asyncio.create_task(_first())
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await started.wait()
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with pytest.raises(RuntimeError, match="transaction"):
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async with database.transaction():
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pass
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await first
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await database.execute("INSERT INTO t (id) VALUES (?)", (1,))
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assert await database.fetch_one("SELECT id FROM t") == (1,)
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await database.close()
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async def test_transaction_blocks_other_statements_until_commit(tmp_path) -> None:
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"""A statement issued during an open transaction queues behind it."""
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hass, _registry = make_hass()
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database = NestQuestDatabase(hass)
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await database.open(tmp_path / "block.db")
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await database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)")
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order: list[str] = []
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started = asyncio.Event()
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release = asyncio.Event()
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async def _txn() -> None:
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async with database.transaction():
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await database.execute("INSERT INTO t (name) VALUES (?)", ("in_tx",))
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order.append("tx-start")
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started.set()
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await release.wait()
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order.append("tx-end")
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async def _outsider() -> None:
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await started.wait()
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await database.execute("INSERT INTO t (name) VALUES (?)", ("after",))
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order.append("outside")
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txn_task = asyncio.create_task(_txn())
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await started.wait()
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outsider_task = asyncio.create_task(_outsider())
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await asyncio.sleep(0.05)
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assert order == ["tx-start"], f"outsider ran inside transaction: {order}"
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release.set()
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await asyncio.gather(txn_task, outsider_task)
|
|
assert order == ["tx-start", "tx-end", "outside"]
|
|
rows = await database.fetch_all("SELECT name FROM t ORDER BY id")
|
|
assert rows == [("in_tx",), ("after",)]
|
|
await database.close()
|
|
|
|
|
|
async def test_concurrent_transaction_is_rejected_with_clear_error(
|
|
tmp_path,
|
|
) -> None:
|
|
"""A second concurrent transaction() gets a clear RuntimeError."""
|
|
hass, _registry = make_hass()
|
|
database = NestQuestDatabase(hass)
|
|
await database.open(tmp_path / "concurrent-tx.db")
|
|
await database.execute("CREATE TABLE t (id INTEGER)")
|
|
|
|
started = asyncio.Event()
|
|
|
|
async def _first() -> None:
|
|
async with database.transaction():
|
|
started.set()
|
|
await asyncio.sleep(0.05)
|
|
|
|
first = asyncio.create_task(_first())
|
|
await started.wait()
|
|
with pytest.raises(RuntimeError, match="transaction"):
|
|
async with database.transaction():
|
|
pass
|
|
await first
|
|
await database.close()
|
|
|
|
|
|
async def test_close_waits_for_in_flight_transaction(tmp_path) -> None:
|
|
"""close() serializes: an open transaction finishes before shutdown."""
|
|
hass, _registry = make_hass()
|
|
database = NestQuestDatabase(hass)
|
|
await database.open(tmp_path / "closerace.db")
|
|
await database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)")
|
|
|
|
started = asyncio.Event()
|
|
release = asyncio.Event()
|
|
|
|
async def _txn() -> None:
|
|
async with database.transaction():
|
|
await database.execute("INSERT INTO t (name) VALUES (?)", ("kept",))
|
|
started.set()
|
|
await release.wait()
|
|
|
|
txn_task = asyncio.create_task(_txn())
|
|
await started.wait()
|
|
close_task = asyncio.create_task(database.close())
|
|
await asyncio.sleep(0.05)
|
|
assert database.connected is True, "close() raced an open transaction"
|
|
release.set()
|
|
await asyncio.gather(txn_task, close_task)
|
|
assert database.connected is False
|
|
|
|
witness = NestQuestDatabase(hass)
|
|
await witness.open(tmp_path / "closerace.db")
|
|
assert await witness.fetch_all("SELECT name FROM t") == [("kept",)]
|
|
await witness.close()
|
|
|
|
|
|
async def test_close_during_transaction_from_same_task_is_rejected(
|
|
tmp_path,
|
|
) -> None:
|
|
"""close() inside its own transaction body raises instead of deadlocking."""
|
|
hass, _registry = make_hass()
|
|
database = NestQuestDatabase(hass)
|
|
await database.open(tmp_path / "selfclose.db")
|
|
await database.execute("CREATE TABLE t (id INTEGER)")
|
|
with pytest.raises(RuntimeError, match="transaction"):
|
|
async with database.transaction():
|
|
await database.close()
|
|
assert database.connected is True
|
|
await database.close()
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# rowcount / lastrowid surface
|
|
# ---------------------------------------------------------------------------
|
|
|
|
|
|
def test_rowcount_and_lastrowid_before_any_operation(tmp_path) -> None:
|
|
database, _hass = _open_db(tmp_path / "unset.db")
|
|
assert database.rowcount == -1
|
|
assert database.lastrowid is None
|
|
_run(database.close())
|
|
|
|
|
|
def test_execute_exposes_rowcount_and_lastrowid(tmp_path) -> None:
|
|
database, _hass = _open_db(tmp_path / "counts.db")
|
|
_run(database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)"))
|
|
_run(database.execute("INSERT INTO t (name) VALUES (?)", ("x",)))
|
|
assert database.rowcount == 1
|
|
assert database.lastrowid == 1
|
|
_run(database.execute("INSERT INTO t (name) VALUES (?)", ("y",)))
|
|
assert database.rowcount == 1
|
|
assert database.lastrowid == 2
|
|
_run(database.close())
|
|
|
|
|
|
def test_execute_many_exposes_rowcount(tmp_path) -> None:
|
|
database, _hass = _open_db(tmp_path / "many.db")
|
|
_run(database.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, name TEXT)"))
|
|
_run(database.execute_many("INSERT INTO t (name) VALUES (?)", [("a",), ("b",)]))
|
|
assert database.rowcount == 2
|
|
_run(database.execute("INSERT INTO t (name) VALUES (?)", ("c",)))
|
|
assert database.lastrowid == 3
|
|
_run(database.close())
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Lifecycle wiring: opened once per entry, closed on unload
|
|
# ---------------------------------------------------------------------------
|
|
|
|
|
|
async def test_setup_entry_opens_database_in_runtime_data(hass, make_entry) -> None:
|
|
from conftest import wire_entry_to_registry
|
|
|
|
from custom_components.nestquest import async_setup_entry, async_unload_entry
|
|
|
|
entry = wire_entry_to_registry(make_entry(), hass.registry)
|
|
assert await async_setup_entry(hass, entry) is True
|
|
runtime = entry.runtime_data
|
|
assert runtime.database is not None
|
|
assert runtime.database.connected is True
|
|
await async_unload_entry(hass, entry)
|
|
|
|
|
|
async def test_unload_entry_closes_database(hass, make_entry) -> None:
|
|
from conftest import wire_entry_to_registry
|
|
|
|
from custom_components.nestquest import async_setup_entry, async_unload_entry
|
|
|
|
entry = wire_entry_to_registry(make_entry(), hass.registry)
|
|
await async_setup_entry(hass, entry)
|
|
database = entry.runtime_data.database
|
|
assert database.connected is True
|
|
assert await async_unload_entry(hass, entry) is True
|
|
assert database.connected is False
|
|
with pytest.raises(RuntimeError, match="closed"):
|
|
await database.fetch_one("SELECT 1")
|
|
|
|
|
|
async def test_second_setup_does_not_open_second_connection(hass, make_entry) -> None:
|
|
from conftest import wire_entry_to_registry
|
|
|
|
from custom_components.nestquest import async_setup_entry, async_unload_entry
|
|
|
|
entry = wire_entry_to_registry(make_entry(), hass.registry)
|
|
await async_setup_entry(hass, entry)
|
|
first = entry.runtime_data.database
|
|
|
|
await async_setup_entry(hass, entry)
|
|
second = entry.runtime_data.database
|
|
|
|
assert first is second
|
|
assert first.connected is True
|
|
await async_unload_entry(hass, entry)
|
|
|
|
|
|
async def test_setup_unload_cycles_reopen_fresh_connection(hass, make_entry) -> None:
|
|
from conftest import wire_entry_to_registry
|
|
|
|
from custom_components.nestquest import async_setup_entry, async_unload_entry
|
|
|
|
entry = wire_entry_to_registry(make_entry(), hass.registry)
|
|
seen: list[NestQuestDatabase] = []
|
|
for _ in range(3):
|
|
await async_setup_entry(hass, entry)
|
|
runtime = entry.runtime_data
|
|
assert runtime.database.connected is True
|
|
seen.append(runtime.database)
|
|
await async_unload_entry(hass, entry)
|
|
assert runtime.database.connected is False
|
|
assert len(set(seen)) == 3
|
|
assert hass.data == {} |