diet-guard/diet_guard/tests/test_sync_banks.py
Krzysztof kuhy Rudnicki 3e51e614b1 Split the last seven Python files; extend the redirect guard to all five paths
Ninth batch of the 250-line sweep. Every Python file in the repo is now under
cap (over-cap count 25 -> 18; the 18 remaining are all Dart).

  _foodbank.py             365 -> 210  (+ _foodbank_search, _foodbank_rebuild)
  test_averages.py         351 -> 222  (+ test_averages_report.py)
  _estimator.py            325 -> 137  (+ _estimator_off.py)
  _budget.py               323 -> 227  (+ _budget_biometrics, _budget_derived)
  test_foodbank.py         311 -> 117  (+ test_foodbank_rebuild.py)
  _averages.py             298 -> 174  (+ _averages_periods, _averages_report)
  test_budget_history.py   288 -> 162  (+ test_budget_history_io.py)

The split boundaries are constrained by which module owns each conftest-patched
state path, not by line count. BUDGET_FILE stays in _budget, FOOD_BANK_FILE in
_foodbank: the derived/search/rebuild halves reach the file only through their
parent's private helpers. Two of the new modules had copied FOOD_BANK_FILE into
their headers as an incidental import, which is exactly the leak the guard is
for -- both cleaned.

test_state_redirect.py now covers all five redirected paths (FOOD_LOG_FILE,
BUDGET_FILE, BUDGET_HISTORY_FILE, FOOD_BANK_FILE, MANUAL_BANK_FILE) rather
than just the food log, in both directions: only the owning module may name
each constant, and each redirect demonstrably moves a real write off the live
path.

Two rewires fail-closed rather than silently: `_budget.budget_weight` and
`_estimator.requests` were module-attribute references no import rewrite
touches, and both raised AttributeError immediately. The latter appeared only
after ruff removed the now-unused `requests` import from _estimator -- the
import was load-bearing solely as a patch target.

Verified: 707 Python tests / 100% branch coverage, 5 layout-fits tests under
xvfb, check_patch_targets 0, pre-commit clean, ~/.local/share/diet_guard
byte-identical.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RA9ynjqXPnexRQnR5oAuCC
2026-08-15 20:37:05 +02:00

249 lines
10 KiB
Python

"""Tests for the food bank's half of the sync tick.
Split out of ``test_sync.py`` to keep both files under the repo's 500-line
ceiling. Covers the derived bank (merged max-count-wins, with the log
authoritative for which foods exist) and the hand-curated bank (merged
last-writer-wins per food name).
"""
from __future__ import annotations
import json
from unittest.mock import patch
from diet_guard import _sync, _sync_client
from diet_guard._device import device_id
from diet_guard._estimator import Nutrition
from diet_guard._foodbank import read_food_bank
from diet_guard._foodbank_manual import add_manual_entry, read_manual_bank
from diet_guard._foodbank_search import lookup_food
from diet_guard._state import log_meal
from diet_guard.sync_merge import food_bank_to_log, manual_bank_to_log
from diet_guard.tests._sync_fakes import _mock_client, _write_token
class TestSyncFoodBank:
"""The log-derived food bank's cross-device merge."""
def test_the_local_bank_is_pushed(self) -> None:
_write_token()
# Through the log, not remember_food: run_sync rebuilds the derived
# bank from the merged log first, so a bank entry with no log entry
# behind it is (correctly) discarded before the push.
log_meal("apple", Nutrition(95, 0.5, 25, 0.3, 180, "manual"), 8)
client = _mock_client(devices=())
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
pushed = [call.args[0] for call in client.put_file_text.call_args_list]
assert f"diet-guard-sync/devices/{device_id()}/food_bank.json" in pushed
def test_a_food_the_phone_logged_reaches_the_gate(self) -> None:
"""The payoff: a food eaten on the phone autocompletes on the PC.
It arrives through the *log* (which merges first in the same tick),
and the bank rebuild picks it up -- membership follows the log, so
this is the path that actually delivers cross-device autocomplete.
"""
_write_token()
remote_log_json = json.dumps(
{
"2026-06-22": [
{
"id": "phone-skyr",
"time": "2026-06-22T09:00:00+02:00",
"desc": "Skyr",
"kcal": 120.0,
"protein_g": 20.0,
"carbs_g": 5.0,
"fat_g": 0.5,
"grams": 150.0,
"source": "manual",
},
],
},
)
client = _mock_client(
devices=("phone",),
files={"diet-guard-sync/devices/phone/food_log.json": remote_log_json},
)
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
found = lookup_food("Skyr")
assert found is not None
assert found.kcal == 120.0
def test_a_deleted_food_is_not_resurrected_by_a_peer(self) -> None:
"""Regression: a CRDT union never shrinks.
Without the log staying authoritative for membership, a peer's stale
copy of a food whose entries were all undone out-clocks the local
absence, gets written back AND re-pushed -- permanently un-deletable.
"""
_write_token()
# This device's log knows nothing of "skyr" (its entries were undone).
log_meal("apple", Nutrition(95, 0.5, 25, 0.3, 180, "manual"), 8)
remote = json.dumps(
{
rid: rec.to_dict()
for rid, rec in food_bank_to_log(
{"skyr": {"desc": "Skyr", "kcal": 120.0, "count": 3}},
).items()
},
)
client = _mock_client(
devices=("phone",),
files={"diet-guard-sync/devices/phone/food_bank.json": remote},
)
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
assert lookup_food("Skyr") is None
pushed = [
call.args[1]
for call in client.put_file_text.call_args_list
if call.args[0].endswith("food_bank.json")
]
assert pushed
assert "skyr" not in pushed[0]
def test_a_higher_remote_count_still_refines_a_known_food(self) -> None:
"""Membership defers to the log; content still takes the better count."""
_write_token()
log_meal("apple", Nutrition(95, 0.5, 25, 0.3, 180, "manual"), 8)
remote = json.dumps(
{
rid: rec.to_dict()
for rid, rec in food_bank_to_log(
{"apple": {"desc": "Apple", "kcal": 95.0, "count": 99}},
).items()
},
)
client = _mock_client(
devices=("phone",),
files={"diet-guard-sync/devices/phone/food_bank.json": remote},
)
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
assert read_food_bank()["apple"]["count"] == 99
def test_unparsable_remote_food_bank_is_skipped(self) -> None:
_write_token()
log_meal("apple", Nutrition(95, 0.5, 25, 0.3, 180, "manual"), 8)
client = _mock_client(
devices=("phone",),
files={"diet-guard-sync/devices/phone/food_bank.json": "{not json"},
)
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
assert lookup_food("apple") is not None
def test_nothing_pushed_when_no_device_has_a_bank(self) -> None:
_write_token()
client = _mock_client(devices=())
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
pushed = [call.args[0] for call in client.put_file_text.call_args_list]
assert f"diet-guard-sync/devices/{device_id()}/food_bank.json" not in pushed
class TestSyncManualBank:
"""The hand-curated food bank's cross-device merge."""
def test_nothing_pushed_when_no_device_has_curated_anything(self) -> None:
_write_token()
client = _mock_client(devices=())
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
pushed = [call.args[0] for call in client.put_file_text.call_args_list]
assert not any("food_bank_manual" in path for path in pushed)
def test_local_curated_entry_is_pushed(self) -> None:
_write_token()
add_manual_entry("Skyr", {"desc": "Skyr", "kcal": 120.0, "count": 0})
client = _mock_client(devices=())
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
pushed = [call.args[0] for call in client.put_file_text.call_args_list]
assert f"diet-guard-sync/devices/{device_id()}/food_bank_manual.json" in pushed
def test_a_remote_curated_entry_is_adopted_locally(self) -> None:
"""The point of the whole feature: a food added on the phone is usable
on the PC, in the gate's autocomplete, without ever being eaten."""
_write_token()
remote = json.dumps(
{
record_id: record.to_dict()
for record_id, record in manual_bank_to_log(
{
"skyr": {
"desc": "Skyr",
"kcal": 120.0,
"protein_g": 20.0,
"carbs_g": 5.0,
"fat_g": 0.5,
"grams": 150.0,
"count": 0,
"t": "2026-07-26T10:00:00+02:00",
},
},
).items()
},
)
client = _mock_client(
devices=("phone",),
files={"diet-guard-sync/devices/phone/food_bank_manual.json": remote},
)
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
assert "skyr" in read_manual_bank()
found = lookup_food("Skyr")
assert found is not None
assert found.kcal == 120.0
def test_a_newer_remote_edit_wins(self) -> None:
_write_token()
add_manual_entry("Skyr", {"desc": "Skyr", "kcal": 120.0, "count": 0})
remote = json.dumps(
{
record_id: record.to_dict()
for record_id, record in manual_bank_to_log(
{
"skyr": {
"desc": "Skyr",
"kcal": 999.0,
"count": 0,
"t": "2999-01-01T00:00:00+02:00",
},
},
).items()
},
)
client = _mock_client(
devices=("phone",),
files={"diet-guard-sync/devices/phone/food_bank_manual.json": remote},
)
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
assert read_manual_bank()["skyr"]["kcal"] == 999.0
def test_unparsable_remote_curated_bank_is_skipped(self) -> None:
_write_token()
add_manual_entry("Skyr", {"desc": "Skyr", "kcal": 120.0, "count": 0})
client = _mock_client(
devices=("phone",),
files={
"diet-guard-sync/devices/phone/food_bank_manual.json": "{not json",
},
)
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
assert read_manual_bank()["skyr"]["kcal"] == 120.0
def test_a_device_with_no_pushed_curated_bank_is_skipped(self) -> None:
_write_token()
add_manual_entry("Skyr", {"desc": "Skyr", "kcal": 120.0, "count": 0})
client = _mock_client(devices=("phone",))
with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
_sync.run_sync()
assert read_manual_bank()["skyr"]["kcal"] == 120.0