feat(skills): add datastore skill (DuckDB engine, JSONL partitioning, Garmin mirror, and view renderers)

skills/datastore/tests/test_garmin_sync.py

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+import json
+import pytest
+import shutil
+import tempfile
+from pathlib import Path
+
+from datastore import DatastoreEngine
+from garmin_sync import GarminSyncClient, GarminMirrorWriter, sync_date_range, generate_date_list
+
+
+@pytest.fixture
+def temp_data_dir():
+    temp_dir = tempfile.mkdtemp(prefix="garmin_test_")
+    data_dir = Path(temp_dir)
+    # create standard dirs
+    (data_dir / "garmin").mkdir(parents=True)
+    yield data_dir
+    shutil.rmtree(temp_dir)
+
+
+def test_garmin_sync_mock_and_idempotency(temp_data_dir):
+    client = GarminSyncClient(token_dir=temp_data_dir, mock=True)
+    writer = GarminMirrorWriter(temp_data_dir)
+
+    dates = ["2026-10-01", "2026-10-02"]
+    sync_date_range(client, writer, dates)
+
+    daily_file = temp_data_dir / "garmin" / "daily" / "2026-10.jsonl"
+    sleep_file = temp_data_dir / "garmin" / "sleep" / "2026-10.jsonl"
+    activities_file = temp_data_dir / "garmin" / "activities" / "2026-10.jsonl"
+
+    assert daily_file.is_file()
+    assert sleep_file.is_file()
+    assert activities_file.is_file()
+
+    # Read daily lines
+    with open(daily_file) as f:
+        daily_lines = [json.loads(line) for line in f if line.strip()]
+    assert len(daily_lines) == 2
+    assert daily_lines[0]["calendarDate"] == "2026-10-01"
+    assert daily_lines[1]["calendarDate"] == "2026-10-02"
+
+    # Re-syncing 2026-10-01 must not create duplicates (idempotent upsert)
+    sync_date_range(client, writer, ["2026-10-01"])
+
+    with open(daily_file) as f:
+        daily_lines_after = [json.loads(line) for line in f if line.strip()]
+    assert len(daily_lines_after) == 2
+
+    # Check activities
+    with open(activities_file) as f:
+        act_lines = [json.loads(line) for line in f if line.strip()]
+    # Mock returns activityId 987654321 for each day, so deduplication keeps 1 record with latest info
+    assert len(act_lines) == 1
+    assert act_lines[0]["activityId"] == 987654321
+
+
+def test_generate_date_list():
+    dates = generate_date_list("2026-09-28", "2026-10-01")
+    assert dates == ["2026-09-28", "2026-09-29", "2026-09-30", "2026-10-01"]
+
+    # Reversed dates should automatically normalize
+    dates_rev = generate_date_list("2026-10-01", "2026-09-28")
+    assert dates_rev == ["2026-09-28", "2026-09-29", "2026-09-30", "2026-10-01"]
+
+
+def test_garmin_auth_error_handling(temp_data_dir):
+    # Non-mock client with empty dir should raise FileNotFoundError
+    with pytest.raises(FileNotFoundError):
+        GarminSyncClient(token_dir=temp_data_dir, mock=False)