diff --git a/src/tests/test_backup_restore.py b/src/tests/test_backup_restore.py
new file mode 100644
index 0000000..56d9329
--- /dev/null
+++ b/src/tests/test_backup_restore.py
@@ -0,0 +1,57 @@
+import os
+import sys
+import time
+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.backup import BackupManager
+
+
+def test_backup_restore_workflow(monkeypatch):
+    with TemporaryDirectory() as tmpdir:
+        fp_dir = Path(tmpdir)
+        key = Fernet.generate_key()
+        enc_mgr = EncryptionManager(key, fp_dir)
+        vault = Vault(enc_mgr, fp_dir)
+        backup_mgr = BackupManager(fp_dir)
+
+        index_file = fp_dir / "seedpass_passwords_db.json.enc"
+
+        data1 = {"passwords": {"0": {"website": "a", "length": 10}}}
+        vault.save_index(data1)
+        os.utime(index_file, (1, 1))
+
+        monkeypatch.setattr(time, "time", lambda: 1111)
+        backup_mgr.create_backup()
+        backup1 = fp_dir / "backups" / "passwords_db_backup_1111.json.enc"
+        assert backup1.exists()
+        assert backup1.stat().st_mode & 0o777 == 0o600
+
+        data2 = {"passwords": {"0": {"website": "b", "length": 12}}}
+        vault.save_index(data2)
+        os.utime(index_file, (2, 2))
+
+        monkeypatch.setattr(time, "time", lambda: 2222)
+        backup_mgr.create_backup()
+        backup2 = fp_dir / "backups" / "passwords_db_backup_2222.json.enc"
+        assert backup2.exists()
+        assert backup2.stat().st_mode & 0o777 == 0o600
+
+        vault.save_index({"passwords": {"temp": {}}})
+        backup_mgr.restore_latest_backup()
+        assert vault.load_index() == data2
+
+        vault.save_index({"passwords": {}})
+        backup_mgr.restore_backup_by_timestamp(1111)
+        assert vault.load_index() == data1
+
+        backup1.unlink()
+        current = vault.load_index()
+        backup_mgr.restore_backup_by_timestamp(1111)
+        assert vault.load_index() == current