Added automatic nightly SQLite backups

Resolves #22

tests_integration/tests/test_backup.py

@@ -0,0 +1,18 @@
+"""Integration tests for the Vendor API endpoint."""
+
+import httpx
+
+from .conftest import DbType, get_db_type
+
+URL = "http://spoolman:8000"
+
+
+def test_backup():
+    """Test triggering an automatic database backup."""
+    if get_db_type() != DbType.SQLITE:
+        return
+
+    # Trigger backup
+    result = httpx.post(f"{URL}/api/v1/backup")
+    result.raise_for_status()
+    assert result.json()["success"] is True