screen-locker/screen_locker/tests/test_compliance_state.py
Krzysztof kuhy Rudnicki 43a8b1d0f6 Split _compliance_state.py and status_view.py
_compliance_state.py was 399 lines and status_view.py 396.

_compliance_state.py becomes three acyclic modules:

  _compliance_predicates.py  the five leaf predicates + the gatelock
                             log_integrity imports
  _compliance_trace.py       PredicateResult / AutoUpgradeOpportunity /
                             LockExplanation, _stage, and
                             describe_auto_upgrade_opportunity
  _compliance_state.py       explain_lock_decision, importing both

Two-module shapes were all cyclic here: _compliance_state must export the
engine while owning the predicates it calls. Three modules break that with no
deferred import, no forwarder and no loss of the typed signature; every name
is re-exported, so _status_data.py and _log_mixin.py are untouched.

Because the hmac helpers now live in _compliance_predicates, 29 patch targets
across 5 test modules move with them -- patching a name where it is no longer
read would silently stop taking effect.

status_view.py's seven _section_* render methods become StatusSectionsMixin in
_status_sections.py, composed into StatusWindow alongside its existing mixins.

Test count goes 975 -> 976: test_no_popup_widgets parametrizes over
PACKAGE_DIR.glob("*.py"), so _status_sections.py is now covered by the
no-popup safety check too. Coverage stays 100%, pylint holds at 8.70/10, and
`screen_lock --status` renders the real week unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EveB813BQ8abAP68VSqZ5Y
2026-08-15 20:01:12 +02:00

237 lines
9.3 KiB
Python

"""Tests for the pure, read-only predicates in _compliance_state.py."""
from __future__ import annotations
from datetime import datetime, timezone
import json
from typing import TYPE_CHECKING
from unittest.mock import patch
from screen_locker._compliance_state import (
has_logged_today,
is_early_bird_pending,
is_scheduled_skip_today,
is_sick_day_today,
)
from screen_locker._sick_tracker import SickHistory
if TYPE_CHECKING:
from pathlib import Path
def _today() -> str:
return datetime.now(tz=timezone.utc).strftime("%Y-%m-%d")
class TestIsScheduledSkipToday:
"""Mirrors test_scheduled_skip.py's coverage, for the standalone function."""
def test_missing_file(self, tmp_path: Path) -> None:
"""A missing skips file means today is not a scheduled skip."""
assert is_scheduled_skip_today(tmp_path / "skips.json") is False
def test_today_listed(self, tmp_path: Path) -> None:
"""Today's date in the skips list makes it a scheduled skip."""
skip_file = tmp_path / "skips.json"
skip_file.write_text(json.dumps([_today()]))
assert is_scheduled_skip_today(skip_file) is True
def test_today_not_listed(self, tmp_path: Path) -> None:
"""A list without today is not a scheduled skip."""
skip_file = tmp_path / "skips.json"
skip_file.write_text(json.dumps(["1999-01-01"]))
assert is_scheduled_skip_today(skip_file) is False
def test_corrupt_json(self, tmp_path: Path) -> None:
"""Unparsable JSON fails closed: not a skip."""
skip_file = tmp_path / "skips.json"
skip_file.write_text("{bad}")
assert is_scheduled_skip_today(skip_file) is False
def test_explicit_today_override(self, tmp_path: Path) -> None:
"""The `today` argument overrides the real date."""
skip_file = tmp_path / "skips.json"
skip_file.write_text(json.dumps(["2020-05-05"]))
assert is_scheduled_skip_today(skip_file, today="2020-05-05") is True
class TestHasLoggedToday:
"""Mirrors test_init_and_log.py's HMAC branches, for the standalone function."""
def test_missing_file(self, tmp_path: Path) -> None:
"""A missing log means nothing was logged today."""
assert has_logged_today(tmp_path / "log.json") is False
def test_corrupt_json(self, tmp_path: Path) -> None:
"""Unparsable JSON fails closed: nothing logged."""
log_file = tmp_path / "log.json"
log_file.write_text("{bad}")
assert has_logged_today(log_file) is False
def test_no_entry_for_today(self, tmp_path: Path) -> None:
"""An entry for another day does not count as today's."""
log_file = tmp_path / "log.json"
log_file.write_text(json.dumps({"1999-01-01": {}}))
assert has_logged_today(log_file) is False
def test_valid_hmac(self, tmp_path: Path) -> None:
"""A correctly signed entry for today counts."""
log_file = tmp_path / "log.json"
log_file.write_text(json.dumps({_today(): {"hmac": "sig"}}))
with patch(
"screen_locker._compliance_predicates.verify_entry_hmac", return_value=True
):
assert has_logged_today(log_file) is True
def test_unsigned_accepted_when_key_unavailable(self, tmp_path: Path) -> None:
"""With no HMAC key on the machine, an unsigned entry is accepted."""
log_file = tmp_path / "log.json"
log_file.write_text(json.dumps({_today(): {}}))
with (
patch(
"screen_locker._compliance_predicates.verify_entry_hmac",
return_value=False,
),
patch(
"screen_locker._compliance_predicates.compute_entry_hmac",
return_value=None,
),
):
assert has_logged_today(log_file) is True
def test_rejected_when_key_available(self, tmp_path: Path) -> None:
"""With a key available, an unsigned entry is rejected as tampering."""
log_file = tmp_path / "log.json"
log_file.write_text(json.dumps({_today(): {}}))
with (
patch(
"screen_locker._compliance_predicates.verify_entry_hmac",
return_value=False,
),
patch(
"screen_locker._compliance_predicates.compute_entry_hmac",
return_value="sig",
),
):
assert has_logged_today(log_file) is False
def test_rejected_when_signed_but_invalid(self, tmp_path: Path) -> None:
"""A signature that does not verify is rejected."""
log_file = tmp_path / "log.json"
log_file.write_text(json.dumps({_today(): {"hmac": "tampered"}}))
with (
patch(
"screen_locker._compliance_predicates.verify_entry_hmac",
return_value=False,
),
patch(
"screen_locker._compliance_predicates.compute_entry_hmac",
return_value=None,
),
):
assert has_logged_today(log_file) is False
class TestIsEarlyBirdPending:
"""Mirrors test_early_bird.py's HMAC branches, for the standalone function."""
def test_missing_file(self, tmp_path: Path) -> None:
"""A missing pending file means no early bird is pending."""
assert is_early_bird_pending(tmp_path / "pending.json") is False
def test_corrupt_json(self, tmp_path: Path) -> None:
"""Unparsable JSON fails closed: nothing pending."""
pending_file = tmp_path / "pending.json"
pending_file.write_text("{bad}")
assert is_early_bird_pending(pending_file) is False
def test_not_a_dict(self, tmp_path: Path) -> None:
"""A JSON list where a dict is expected fails closed."""
pending_file = tmp_path / "pending.json"
pending_file.write_text(json.dumps(["not", "a", "dict"]))
assert is_early_bird_pending(pending_file) is False
def test_stale_date(self, tmp_path: Path) -> None:
"""A pending record from an earlier day no longer applies."""
pending_file = tmp_path / "pending.json"
pending_file.write_text(json.dumps({"date": "2000-01-01", "hmac": "sig"}))
assert is_early_bird_pending(pending_file) is False
def test_valid_hmac(self, tmp_path: Path) -> None:
"""A correctly signed pending record for today counts."""
pending_file = tmp_path / "pending.json"
pending_file.write_text(json.dumps({"date": _today(), "hmac": "sig"}))
with patch(
"screen_locker._compliance_predicates.verify_entry_hmac", return_value=True
):
assert is_early_bird_pending(pending_file) is True
def test_unsigned_accepted_when_key_unavailable(self, tmp_path: Path) -> None:
"""With no HMAC key, an unsigned pending record is accepted."""
pending_file = tmp_path / "pending.json"
pending_file.write_text(json.dumps({"date": _today()}))
with (
patch(
"screen_locker._compliance_predicates.verify_entry_hmac",
return_value=False,
),
patch(
"screen_locker._compliance_predicates.compute_entry_hmac",
return_value=None,
),
):
assert is_early_bird_pending(pending_file) is True
def test_rejected_when_key_available(self, tmp_path: Path) -> None:
"""With a key available, an unsigned pending record is rejected."""
pending_file = tmp_path / "pending.json"
pending_file.write_text(json.dumps({"date": _today()}))
with (
patch(
"screen_locker._compliance_predicates.verify_entry_hmac",
return_value=False,
),
patch(
"screen_locker._compliance_predicates.compute_entry_hmac",
return_value="sig",
),
):
assert is_early_bird_pending(pending_file) is False
def test_rejected_when_signed_but_invalid(self, tmp_path: Path) -> None:
"""A pending record whose signature fails to verify is rejected."""
pending_file = tmp_path / "pending.json"
pending_file.write_text(json.dumps({"date": _today(), "hmac": "bad"}))
with (
patch(
"screen_locker._compliance_predicates.verify_entry_hmac",
return_value=False,
),
patch(
"screen_locker._compliance_predicates.compute_entry_hmac",
return_value=None,
),
):
assert is_early_bird_pending(pending_file) is False
class TestIsSickDayToday:
"""Reading today's sick-day status out of the sick history."""
"""Thin wrapper around _sick_tracker.is_sick_day."""
def test_true_when_listed(self) -> None:
"""Today present in the history is a sick day."""
history = SickHistory(sick_days=[_today()])
assert is_sick_day_today(history) is True
def test_false_when_not_listed(self) -> None:
"""Today absent from the history is not a sick day."""
history = SickHistory(sick_days=["1999-01-01"])
assert is_sick_day_today(history) is False
def test_explicit_today_override(self) -> None:
"""The `today` argument overrides the real date."""
history = SickHistory(sick_days=["2020-05-05"])
assert is_sick_day_today(history, today="2020-05-05") is True