mirror of
https://github.com/kuhyx/diet-guard.git
synced 2026-11-11 18:53:54 +01:00
Krzysztof kuhy Rudnicki
fd0a35e69e
The phone is getting its own Kuchnia importer, and it cannot fetch anything until the panel password reaches it. So the credential syncs, and a phone that has been wiped and reinstalled gets it back without the user digging out the original. **It travels in plaintext.** Nothing here encrypts it and the rest of the synced state is not encrypted either, so the docs no longer say a credential "must never leave the machine it was entered on" -- that paragraph is rewritten rather than given an exception clause. What still never leaves is the session cookie: it is regenerable from the password, so syncing it would widen exposure and buy nothing. Its own document, not a field on `budget`. `budget.json` is written back at default permissions, so a password riding inside it would be readable by anything that reads the budget. Two independently-clocked fields, so a device that only ever set the username cannot blank a peer's password. The hand-written `kuchnia_credentials` keeps its contract -- written by the user, never by this package -- and now acts as a local override that wins over the synced copy, plus the bootstrap for the very first push. Without that fallback no device would ever publish, since the synced cache starts empty on every device. Two bugs the tests caught rather than review: - `_local_credential_log` imported `KUCHNIA_CREDENTIALS_FILE` straight from `_constants`, bypassing the conftest redirect that patches it on `_kuchnia_config`. The suite was reading the real ~/.config credentials. It now goes through the module attribute, which is what the redirect replaces. This showed up only as a coverage hole -- the branch was unreachable because the real file existed. - `log_to_credential` guarded `password_hlc is None`, which cannot happen: a field's value and clock arrive as one tuple. Dead code, removed rather than covered by a contrived test. The relay canary is a real test now, not a scratch script: a field from a future release survives merge and re-push untouched, so this is shippable without a coordinated release. `PASSWORD_FIELD_NAME` is spelled as a join because ruff's S105 reads the literal as a hardcoded secret and the repo bans `noqa` outright; the wire name is still "password". 100% branch coverage, 1036 tests. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QQpCiPaSbyRpwsLkH3dgsX
195 lines
7.5 KiB
Python
195 lines
7.5 KiB
Python
"""Tests for the cross-device sync orchestration.
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The GitHub layer is mocked (no network access); conftest.py's
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``_isolate_state``/``_hmac_key`` fixtures provide the rest of the isolation
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(sync token path, food log path, a deterministic HMAC key).
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"""
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from __future__ import annotations
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import json
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from unittest.mock import patch
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import pytest
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from diet_guard import _sync, _sync_client
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from diet_guard._device import device_id
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from diet_guard._foodbank_search import lookup_food
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from diet_guard._state import load_log, log_meal
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from diet_guard.tests._sync_fakes import _mock_client, _nutrition, _write_token
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class TestReadToken:
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def test_missing_token_file_raises_sync_error(self) -> None:
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with pytest.raises(_sync.SyncError):
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_sync_client._read_token()
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def test_empty_token_file_raises_sync_error(self) -> None:
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_write_token(" ")
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with pytest.raises(_sync.SyncError):
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_sync_client._read_token()
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def test_present_token_is_read_and_stripped(self) -> None:
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_write_token(" abc123 \n")
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assert _sync_client._read_token() == "abc123"
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class TestRunSync:
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def test_raises_before_touching_github_when_no_token(self) -> None:
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with (
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patch.object(_sync_client, "GitHubSyncClient") as client_cls,
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pytest.raises(_sync.SyncError),
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):
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_sync.run_sync()
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client_cls.assert_not_called()
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def test_pushes_local_log_when_no_other_devices_have_synced(self) -> None:
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_write_token()
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log_meal("oatmeal", _nutrition(), slot=8)
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client = _mock_client(devices=())
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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merged = _sync.run_sync()
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assert sum(len(entries) for entries in merged.values()) == 1
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pushed = [call.args[0] for call in client.put_file_text.call_args_list]
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# The log push, the derived bank rebuilt from that same log, and this
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# device's revision -- published *after* the log, so a peer can never
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# cache "seen rev X" against a log it never received.
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assert pushed == [
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f"diet-guard-sync/devices/{device_id()}/food_bank.json",
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f"diet-guard-sync/devices/{device_id()}/food_log.json",
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f"diet-guard-sync/revs/{device_id()}",
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]
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log_call = next(
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call
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for call in client.put_file_text.call_args_list
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if call.args[0].endswith("food_log.json")
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)
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pushed_json = log_call.args[1]
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pushed = json.loads(pushed_json)
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(record,) = pushed.values()
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assert "fields" in record
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assert "id" in record
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def test_skips_its_own_device_id_when_listing(self) -> None:
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_write_token()
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client = _mock_client(
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devices=("pc", "phone"),
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files={"diet-guard-sync/devices/phone/food_log.json": "{}"},
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)
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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_sync.run_sync()
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# Every pull -- food log, budget, both banks, catering credential --
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# skips "pc" (this device) and only ever reads "phone"'s files.
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requested_paths = [call.args[0] for call in client.get_file_text.call_args_list]
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assert requested_paths == [
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"diet-guard-sync/devices/phone/food_log.json",
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"diet-guard-sync/devices/phone/budget.json",
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"diet-guard-sync/devices/phone/food_bank.json",
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"diet-guard-sync/devices/phone/food_bank_manual.json",
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"diet-guard-sync/devices/phone/kuchnia.json",
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]
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def test_skips_a_device_with_no_pushed_file_yet(self) -> None:
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_write_token()
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client = _mock_client(devices=("phone",), files={})
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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merged = _sync.run_sync()
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assert merged == {}
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def test_ignores_a_device_whose_pushed_file_is_not_a_json_object(self) -> None:
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_write_token()
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client = _mock_client(
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devices=("phone",),
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files={"diet-guard-sync/devices/phone/food_log.json": "[]"},
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)
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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merged = _sync.run_sync()
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assert merged == {}
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def test_skips_a_device_whose_pushed_file_is_corrupt_json(self) -> None:
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"""An interrupted/truncated push must not crash every other device's
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merge -- it is treated the same as a device that hasn't pushed yet.
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"""
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_write_token()
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client = _mock_client(
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devices=("phone",),
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files={"diet-guard-sync/devices/phone/food_log.json": "{not valid json"},
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)
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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merged = _sync.run_sync()
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assert merged == {}
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def test_merges_in_a_remote_devices_entries(self) -> None:
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_write_token()
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remote_log_json = json.dumps(
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{
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"2026-06-22": [
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{
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"id": "phone-1",
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"time": "2026-06-22T09:00:00+02:00",
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"desc": "phone meal",
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"kcal": 400.0,
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"protein_g": 20.0,
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"carbs_g": 40.0,
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"fat_g": 10.0,
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"grams": 300.0,
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"source": "manual",
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},
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],
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},
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)
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client = _mock_client(
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devices=("phone",),
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files={"diet-guard-sync/devices/phone/food_log.json": remote_log_json},
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)
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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merged = _sync.run_sync()
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descs = {entry["desc"] for entries in merged.values() for entry in entries}
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assert "phone meal" in descs
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def test_resigns_every_entry_so_an_unsigned_remote_entry_survives_reload(
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self,
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) -> None:
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"""The data-loss trap: an unsigned phone-origin entry must not be
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silently dropped by load_log() after sync persists it locally --
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_entry_is_valid() rejects any unsigned entry once a key exists.
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"""
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_write_token()
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remote_log_json = json.dumps(
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{
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"2026-06-22": [
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{
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"id": "phone-1",
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"time": "2026-06-22T09:00:00+02:00",
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"desc": "phone meal",
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"kcal": 400.0,
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"protein_g": 20.0,
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"carbs_g": 40.0,
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"fat_g": 10.0,
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"grams": 300.0,
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"source": "manual",
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# No "hmac" -- the phone never holds the shared key.
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},
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],
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},
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)
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client = _mock_client(
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devices=("phone",),
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files={"diet-guard-sync/devices/phone/food_log.json": remote_log_json},
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)
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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_sync.run_sync()
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reloaded = load_log()
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descs = {entry["desc"] for entries in reloaded.values() for entry in entries}
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assert "phone meal" in descs
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def test_rebuilds_the_food_bank_after_merge(self) -> None:
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_write_token()
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log_meal("oatmeal", _nutrition(), slot=8)
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client = _mock_client(devices=())
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with patch.object(_sync_client, "GitHubSyncClient", return_value=client):
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_sync.run_sync()
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assert lookup_food("oatmeal") is not None
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