69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
"""Guest ledger connections must inherit the configured database.synchronous.
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apply_durability_barriers() is the guest-connection entry point (secondary
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state.db users that must NOT touch journal mode). The configured
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``database.synchronous`` level normally rides on apply_database_pragmas()
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during the owner's journal-mode setup — a path guests deliberately skip — so
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the guest entry point applies it directly.
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"""
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import sqlite3
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import pytest
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import hermes_state
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from hermes_state import apply_durability_barriers
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def _config(monkeypatch, database_section):
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import hermes_cli.config as config_mod
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cfg = {"database": database_section}
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monkeypatch.setattr(config_mod, "load_config_readonly", lambda *a, **k: cfg)
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return cfg
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def test_guest_barriers_apply_configured_synchronous(monkeypatch, tmp_path):
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_config(monkeypatch, {"synchronous": "FULL"})
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conn = sqlite3.connect(tmp_path / "state.db")
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try:
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conn.execute("PRAGMA journal_mode=DELETE")
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conn.execute("PRAGMA synchronous=1")
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apply_durability_barriers(conn)
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assert conn.execute("PRAGMA synchronous").fetchone()[0] == 2
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# And the journal mode was NOT touched — that is the whole contract.
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assert (
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str(conn.execute("PRAGMA journal_mode").fetchone()[0]).lower()
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== "delete"
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)
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finally:
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conn.close()
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def test_guest_barriers_leave_synchronous_alone_when_unset(monkeypatch, tmp_path):
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_config(monkeypatch, {})
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conn = sqlite3.connect(tmp_path / "state.db")
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try:
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conn.execute("PRAGMA journal_mode=DELETE")
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conn.execute("PRAGMA synchronous=1")
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apply_durability_barriers(conn)
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assert conn.execute("PRAGMA synchronous").fetchone()[0] == 1
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finally:
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conn.close()
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def test_guest_barriers_survive_config_failure(monkeypatch, tmp_path):
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import hermes_cli.config as config_mod
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def _boom(*a, **k):
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raise RuntimeError("config unavailable")
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monkeypatch.setattr(config_mod, "load_config_readonly", _boom)
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conn = sqlite3.connect(tmp_path / "state.db")
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try:
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conn.execute("PRAGMA journal_mode=DELETE")
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# Must not raise; best-effort like every other pragma path.
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apply_durability_barriers(conn)
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finally:
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conn.close()
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