chore: fix mypy findings in scval decoding and the server fixture

Author: RaoulSchaffranek

src/komet_node/scval.py

@@ -253,7 +253,8 @@ def scvalue_from_xdr(xdr: SCVal) -> SCValue:
 
         case SCValType.SCV_VEC:
             assert xdr.vec is not None
-            return SCVec(tuple(scvalue_from_xdr(v) for v in xdr.vec.sc_vec))
+            # komet annotates SCVec.val as tuple[SCValue] instead of tuple[SCValue, ...]
+            return SCVec(tuple(scvalue_from_xdr(v) for v in xdr.vec.sc_vec))  # type: ignore[arg-type]
 
         case SCValType.SCV_MAP:
             assert xdr.map is not None

src/tests/integration/test_server.py

@@ -8,14 +8,17 @@
 import time
 import urllib.request
 from pathlib import Path
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
 import pytest
 from stellar_sdk import Account, Address, Keypair, Network, StrKey, TransactionBuilder, xdr
 from stellar_sdk.xdr.sc_val_type import SCValType
 
 from komet_node.server import StellarRpcServer
 
+if TYPE_CHECKING:
+    from collections.abc import Iterator
+
 EMPTY_CONTRACT_WAT = (Path(__file__).parent / 'data' / 'wasm' / 'empty.wat').resolve(strict=True)
 ARGS_CONTRACT_WAT = (Path(__file__).parent / 'data' / 'wasm' / 'args.wat').resolve(strict=True)
 ADDER_CONTRACT_WAT = (Path(__file__).parent / 'data' / 'wasm' / 'adder.wat').resolve(strict=True)
@@ -60,7 +63,7 @@ def _post(port: int, body: bytes) -> dict[str, Any]:
 
 
 @pytest.fixture
-def server(tmp_path: Path):
+def server(tmp_path: Path) -> Iterator[StellarRpcServer]:
     port = _find_free_port()
     srv = StellarRpcServer(
         host='localhost',