diet-guard/diet_guard/tests/test_gatelock.py
Krzysztof kuhy Rudnicki 843f5e0221 Extract diet_guard from testsAndMisc as a standalone repo
Rewrites python_pkg.diet_guard imports to diet_guard, vendors the
shared as_float coercion helper, drops the monorepo PYTHONPATH from
install.sh and the systemd unit (package is now pip-installed), and
scaffolds standalone lint/test config matching testsAndMisc's real
enforced bar (pylint --fail-under=10 with tests excluded and the
use-implicit-booleaness/consider-using-with disables, mypy's actual
disabled-error-code set, ruff ALL, bandit, 100% branch coverage).
2026-06-22 12:18:39 +02:00

309 lines
12 KiB
Python

"""Tests for _gatelock.py — the fullscreen log-to-unlock gate window.
Construction, MealGate's gatelock wiring (LockConfig choice, hooks), and the
shared module-level helpers. The fullscreen/grab/VT-disable mechanics
themselves are tested in the ``gatelock`` package, not here. The
nutrition/meal-flow tests live in :mod:`test_gatelock_mealflow`; the
functional fake ``tk`` widgets and the ``gate`` fixture live in
``conftest.py`` and are shared by both files.
"""
from __future__ import annotations
from types import SimpleNamespace
from unittest.mock import MagicMock, patch
import pytest
from diet_guard import (
_gatelock,
_gatelock_support,
_gatelock_ui,
)
from diet_guard._budget import seal_budget
from diet_guard._gatelock import (
MealGate,
_pending_slots,
acquire_gate_lock,
release_gate_lock,
)
from diet_guard._gatelock_core import _safe_float
from diet_guard._gatelock_nutrition import _format_preview
from diet_guard._gatelock_support import wait_for_display
from diet_guard._gatelock_ui import DEFAULT_PER_GRAMS
from diet_guard._portions import DEFAULT_ITEM_GRAMS
from diet_guard.tests.conftest import _FAKE_TK, _FakeTclError, _nutrition
# --------------------------------------------------------------------------
# Module-level helpers
# --------------------------------------------------------------------------
class TestModuleHelpers:
"""Pure functions and the single-instance lock."""
def test_safe_float_blank(self) -> None:
"""A blank string is None."""
assert _safe_float("") is None
def test_safe_float_number(self) -> None:
"""A numeric string parses."""
assert _safe_float("3.5") == 3.5
def test_safe_float_non_numeric(self) -> None:
"""A non-numeric string is None."""
assert _safe_float("abc") is None
def test_format_preview_with_portion(self) -> None:
"""A non-zero portion shows the grams segment."""
text = _format_preview(_nutrition(grams=200))
assert "200g" in text
def test_format_preview_without_portion(self) -> None:
"""A zero portion omits the grams segment."""
text = _format_preview(_nutrition(grams=0))
assert "g ·" not in text
def test_gate_lock_single_instance(self) -> None:
"""A second acquire while the first is held returns None."""
first = acquire_gate_lock()
assert first is not None
assert acquire_gate_lock() is None
release_gate_lock(first)
def test_pending_slots_due(self) -> None:
"""When slots are due, those are returned verbatim."""
with patch.object(_gatelock, "due_slots", return_value=[12, 16]):
assert _pending_slots(demo_mode=False) == [12, 16]
def test_pending_slots_demo_fallback(self) -> None:
"""Demo mode invents a representative slot when nothing is due."""
with patch.object(_gatelock, "due_slots", return_value=[]):
assert len(_pending_slots(demo_mode=True)) == 1
def test_pending_slots_production_empty(self) -> None:
"""Production with nothing due returns no slots."""
with patch.object(_gatelock, "due_slots", return_value=[]):
assert not _pending_slots(demo_mode=False)
class TestAssertNotUnderPytest:
"""The safety net that blocks a real Tk gate under pytest."""
def test_raises_with_real_tkinter(self) -> None:
"""Real tkinter under pytest is refused."""
with (
patch.object(_gatelock, "tk", SimpleNamespace(__name__="tkinter")),
pytest.raises(RuntimeError),
):
_gatelock._assert_not_under_pytest()
def test_passes_with_mock(self) -> None:
"""A mocked tk (name != tkinter) passes straight through."""
with patch.object(_gatelock, "tk", SimpleNamespace(__name__="mock")):
_gatelock._assert_not_under_pytest()
# --------------------------------------------------------------------------
# Construction
# --------------------------------------------------------------------------
class TestConstruction:
"""Building the window in both modes."""
def test_demo_builds(self, gate: MealGate) -> None:
"""A demo gate constructs with a pending slot, grams basis, and a soft lock."""
assert gate.demo_mode is True
assert gate._vars.unit.get() == "grams"
assert gate._lock._config.mode == "soft"
def test_production_builds(self) -> None:
"""A production gate builds with a hard lock config."""
with patch.object(_gatelock, "tk", _FAKE_TK):
gate = MealGate(demo_mode=False)
assert gate.demo_mode is False
assert gate._lock._config.mode == "hard"
# --------------------------------------------------------------------------
# Form logic
# --------------------------------------------------------------------------
class TestFormBasics:
"""Field helpers and the numeric validator."""
def test_numeric_validator(self) -> None:
"""Blank and numbers are allowed; words are not."""
assert _gatelock_ui.is_numeric_or_blank("")
assert _gatelock_ui.is_numeric_or_blank("12.5")
assert not _gatelock_ui.is_numeric_or_blank("abc")
def test_desc_get_set(self, gate: MealGate) -> None:
"""The description round-trips through its helpers, trimmed."""
gate._set_desc(" shoarma ")
assert gate._get_desc() == "shoarma"
def test_desc_return_suppresses_newline(self, gate: MealGate) -> None:
"""Enter in the description submits and returns the break sentinel."""
gate._set_desc("apple")
with patch.object(gate, "_on_submit") as submit:
assert gate._on_desc_return(None) == "break"
submit.assert_called_once()
def test_macro_values_non_numeric(self, gate: MealGate) -> None:
"""A non-numeric macro field makes the whole read None."""
gate._widgets.macros.kcal.insert(0, "abc")
assert gate._macro_values() is None
class TestBasisAndAmount:
"""Edge branches in the grams/items basis and amount maths."""
def test_basis_typed_value(self, gate: MealGate) -> None:
"""A typed per-value is honoured directly."""
gate._set_entry(gate._widgets.per_entry, "50")
assert gate._basis_grams() == 50
def test_basis_items_known_staple(self, gate: MealGate) -> None:
"""Items mode with a blank per falls back to the staple weight."""
gate._widgets.per_entry.delete(0)
gate._vars.unit.set("items")
gate._set_desc("apple")
assert gate._basis_grams() == 182
def test_basis_items_unknown(self, gate: MealGate) -> None:
"""An unknown item uses the default piece weight."""
gate._widgets.per_entry.delete(0)
gate._vars.unit.set("items")
gate._set_desc("mystery")
assert gate._basis_grams() == DEFAULT_ITEM_GRAMS
def test_basis_grams_default(self, gate: MealGate) -> None:
"""Grams mode with a blank per uses the per-100 g default."""
gate._widgets.per_entry.delete(0)
assert gate._basis_grams() == DEFAULT_PER_GRAMS
def test_eaten_grams_none(self, gate: MealGate) -> None:
"""No amount typed yields no eaten weight."""
assert gate._eaten_grams() is None
def test_eaten_grams_items(self, gate: MealGate) -> None:
"""Items mode multiplies the count by the per-item weight."""
gate._vars.unit.set("items")
gate._set_desc("apple")
gate._set_entry(gate._widgets.per_entry, "182")
gate._set_entry(gate._widgets.amount_entry, "5")
assert gate._eaten_grams() == 5 * 182
def test_amount_change_refreshes(self, gate: MealGate) -> None:
"""Changing the amount recomputes the preview."""
gate._set_entry(gate._widgets.macros.kcal, "100")
gate._set_entry(gate._widgets.amount_entry, "200")
gate._on_amount_change(None)
assert gate._vars.preview.get()
def test_projection_else_without_item(self, gate: MealGate) -> None:
"""With a budget but no priced item, no after-this-item is shown."""
seal_budget(2000)
gate._refresh_projection()
text = gate._vars.projection.get()
assert "left" in text
assert "after this item" not in text
def test_keyrelease_grams_mode(self, gate: MealGate) -> None:
"""In grams mode the per-item weight is not touched on keyrelease."""
gate._vars.unit.set("grams")
gate._set_desc("apple")
gate._on_desc_keyrelease(None)
def test_keyrelease_items_unknown(self, gate: MealGate) -> None:
"""An unknown item in items mode leaves the per field unchanged."""
gate._vars.unit.set("items")
gate._set_desc("zzzz")
gate._on_desc_keyrelease(None)
def test_apply_reference_keeps_existing_amount(self, gate: MealGate) -> None:
"""A grams-mode pick does not overwrite an amount already typed."""
gate._set_entry(gate._widgets.amount_entry, "50")
gate._apply_reference(_nutrition(100, 100))
assert gate._widgets.amount_entry.get() == "50"
class TestLockDelegation:
"""MealGate's gatelock wiring: hooks delegate, run()/close() delegate."""
def test_on_focus_ready_focuses_desc_text(self, gate: MealGate) -> None:
"""on_focus_ready puts keyboard focus on the description box."""
gate._widgets.desc_text.focus_force = MagicMock()
gate.on_focus_ready()
gate._widgets.desc_text.focus_force.assert_called_once()
def test_on_close_is_a_noop(self, gate: MealGate) -> None:
"""on_close has no hardware/state to release; must not raise."""
gate.on_close()
def test_callback_error_status(self, gate: MealGate) -> None:
"""An unexpected callback error surfaces a recoverable message."""
gate.on_callback_error()
assert "went wrong" in gate._vars.status.get()
def test_run_delegates_to_lock(self, gate: MealGate) -> None:
"""run() hands off to the owned LockWindow."""
with patch.object(gate._lock, "run") as mock_run:
gate.run()
mock_run.assert_called_once_with()
def test_close_delegates_to_lock(self, gate: MealGate) -> None:
"""close() hands off to the owned LockWindow."""
with patch.object(gate._lock, "close") as mock_close:
gate.close()
mock_close.assert_called_once_with()
class TestDisplayReadiness:
"""The session-start display wait that absorbs the X auth-cookie race."""
def test_ready_when_root_connects(self) -> None:
"""A Tk root that builds and destroys cleanly means the display is up."""
fake_tk = SimpleNamespace(Tk=MagicMock(), TclError=_FakeTclError)
with patch.object(_gatelock_support, "tk", fake_tk):
assert _gatelock_support._display_is_ready() is True
fake_tk.Tk.return_value.destroy.assert_called_once()
def test_not_ready_on_tclerror(self) -> None:
"""A TclError from Tk() (no display / no cookie yet) means not ready."""
fake_tk = SimpleNamespace(
Tk=MagicMock(side_effect=_FakeTclError("no display")),
TclError=_FakeTclError,
)
with patch.object(_gatelock_support, "tk", fake_tk):
assert _gatelock_support._display_is_ready() is False
def test_wait_returns_immediately_when_ready(self) -> None:
"""A display ready on the first probe returns at once and never sleeps."""
sleep = MagicMock()
with patch.object(_gatelock_support, "_display_is_ready", return_value=True):
ready = wait_for_display(sleep=sleep, monotonic=MagicMock(return_value=0.0))
assert ready is True
sleep.assert_not_called()
def test_wait_polls_then_succeeds(self) -> None:
"""Not-ready then ready sleeps once between probes, then unblocks."""
sleep = MagicMock()
monotonic = MagicMock(side_effect=[0.0, 0.0])
with patch.object(
_gatelock_support, "_display_is_ready", side_effect=[False, True]
):
assert wait_for_display(sleep=sleep, monotonic=monotonic) is True
sleep.assert_called_once()
def test_wait_times_out_and_defers(self) -> None:
"""A display still down at the deadline gives up so the next tick retries."""
sleep = MagicMock()
monotonic = MagicMock(side_effect=[0.0, 60.0])
with patch.object(_gatelock_support, "_display_is_ready", return_value=False):
assert wait_for_display(sleep=sleep, monotonic=monotonic) is False
sleep.assert_not_called()