05/23 Phase 18,19

tests/test_backup.py

@@ -0,0 +1,104 @@
+"""
+tests/test_backup.py
+---------------------
+Tests for db.database backup_db() and restore_db().
+"""
+
+import os
+import pytest
+from db.database import backup_db, restore_db, DB_PATH, get_connection
+from db.models import insert_draw, get_draws_with_game, get_game_by_name
+
+
+# ── backup_db ─────────────────────────────────────────────────────────────────
+
+def test_backup_creates_file(tmp_db, tmp_path):
+    dest = backup_db(dest_dir=str(tmp_path))
+    assert os.path.isfile(dest)
+
+
+def test_backup_filename_contains_timestamp(tmp_db, tmp_path):
+    dest = backup_db(dest_dir=str(tmp_path))
+    basename = os.path.basename(dest)
+    assert basename.startswith("lottosight_backup_")
+    assert basename.endswith(".db")
+
+
+def test_backup_returns_path_string(tmp_db, tmp_path):
+    result = backup_db(dest_dir=str(tmp_path))
+    assert isinstance(result, str)
+    assert len(result) > 0
+
+
+def test_backup_file_is_valid_sqlite(tmp_db, tmp_path):
+    dest = backup_db(dest_dir=str(tmp_path))
+    import sqlite3
+    conn = sqlite3.connect(dest)
+    cursor = conn.cursor()
+    cursor.execute("SELECT name FROM sqlite_master WHERE type='table'")
+    tables = {r[0] for r in cursor.fetchall()}
+    conn.close()
+    assert "games" in tables
+    assert "draws" in tables
+
+
+def test_backup_preserves_draw_data(tmp_db, tmp_path):
+    game = get_game_by_name("Powerball")
+    insert_draw(game["id"], "2024-06-01", [5, 14, 22, 36, 69], bonus=7)
+    dest = backup_db(dest_dir=str(tmp_path))
+    import sqlite3
+    conn = sqlite3.connect(dest)
+    conn.row_factory = sqlite3.Row
+    cursor = conn.cursor()
+    cursor.execute("SELECT numbers FROM draws WHERE draw_date='2024-06-01'")
+    row = cursor.fetchone()
+    conn.close()
+    assert row is not None
+    assert "5" in row["numbers"]
+
+
+def test_backup_creates_dest_dir_if_missing(tmp_db, tmp_path):
+    nested = str(tmp_path / "a" / "b" / "c")
+    dest = backup_db(dest_dir=nested)
+    assert os.path.isfile(dest)
+
+
+def test_backup_default_dest_dir(tmp_db, monkeypatch, tmp_path):
+    from core.paths import user_data_dir as _udd
+    monkeypatch.setattr("db.database.user_data_dir", lambda: str(tmp_path))
+    dest = backup_db()   # no dest_dir — should use exports/ sub-dir
+    assert os.path.isfile(dest)
+    assert "exports" in dest
+
+
+# ── restore_db ────────────────────────────────────────────────────────────────
+
+def test_restore_missing_file_raises(tmp_db):
+    with pytest.raises(FileNotFoundError):
+        restore_db("/nonexistent/backup.db")
+
+
+def test_restore_replaces_live_db(tmp_db, tmp_path):
+    game = get_game_by_name("Powerball")
+    insert_draw(game["id"], "2024-07-04", [3, 17, 28, 45, 62], bonus=12)
+    backup_path = backup_db(dest_dir=str(tmp_path))
+
+    # Delete the draw from the live DB
+    conn = get_connection()
+    conn.execute("DELETE FROM draws WHERE draw_date='2024-07-04'")
+    conn.commit()
+    conn.close()
+
+    draws_before = get_draws_with_game(game_id=game["id"])
+    assert not any(d["draw_date"] == "2024-07-04" for d in draws_before)
+
+    restore_db(backup_path)
+
+    draws_after = get_draws_with_game(game_id=game["id"])
+    assert any(d["draw_date"] == "2024-07-04" for d in draws_after)
+
+
+def test_restore_returns_none(tmp_db, tmp_path):
+    backup_path = backup_db(dest_dir=str(tmp_path))
+    result = restore_db(backup_path)
+    assert result is None