Fix checksum path handling

src/tests/test_entry_management_checksum_path.py

@@ -0,0 +1,41 @@
+import sys
+from pathlib import Path
+from tempfile import TemporaryDirectory
+from cryptography.fernet import Fernet
+
+sys.path.append(str(Path(__file__).resolve().parents[1]))
+
+from password_manager.encryption import EncryptionManager
+from password_manager.vault import Vault
+from password_manager.entry_management import EntryManager
+
+
+def test_update_checksum_writes_to_expected_path():
+    with TemporaryDirectory() as tmpdir:
+        tmp_path = Path(tmpdir)
+        key = Fernet.generate_key()
+        enc_mgr = EncryptionManager(key, tmp_path)
+        vault = Vault(enc_mgr, tmp_path)
+        entry_mgr = EntryManager(vault, tmp_path)
+
+        # create an empty index file
+        vault.save_index({"passwords": {}})
+        entry_mgr.update_checksum()
+
+        expected = tmp_path / "seedpass_passwords_db_checksum.txt"
+        assert expected.exists()
+
+
+def test_backup_index_file_creates_backup_in_directory():
+    with TemporaryDirectory() as tmpdir:
+        tmp_path = Path(tmpdir)
+        key = Fernet.generate_key()
+        enc_mgr = EncryptionManager(key, tmp_path)
+        vault = Vault(enc_mgr, tmp_path)
+        entry_mgr = EntryManager(vault, tmp_path)
+
+        vault.save_index({"passwords": {}})
+        entry_mgr.backup_index_file()
+
+        backups = list(tmp_path.glob("passwords_db_backup_*.json.enc"))
+        assert len(backups) == 1