feat: standardize timeout values to floats in seconds (#1766)

tests/client/test_session_group.py

@@ -273,7 +273,7 @@ class TestClientSessionGroup:
                 "mcp.client.session_group.mcp.stdio_client",
             ),
             (
-                SseServerParameters(url="http://test.com/sse", timeout=10),
+                SseServerParameters(url="http://test.com/sse", timeout=10.0),
                 "sse",
                 "mcp.client.session_group.sse_client",
             ),  # url, headers, timeout, sse_read_timeout

tests/issues/test_88_random_error.py

@@ -1,7 +1,6 @@
 """Test to reproduce issue #88: Random error thrown on response."""
 
 from collections.abc import Sequence
-from datetime import timedelta
 from pathlib import Path
 from typing import Any
 
@@ -93,11 +92,9 @@ async def test_notification_validation_error(tmp_path: Path):
             assert not slow_request_lock.is_set()
 
             # Second call should timeout (slow operation with minimal timeout)
-            # Use 10ms timeout to trigger quickly without waiting
+            # Use very small timeout to trigger quickly without waiting
             with pytest.raises(McpError) as exc_info:
-                await session.call_tool(
-                    "slow", read_timeout_seconds=timedelta(microseconds=1)
-                )  # artificial timeout that always fails
+                await session.call_tool("slow", read_timeout_seconds=0.000001)  # artificial timeout that always fails
             assert "Timed out while waiting" in str(exc_info.value)
 
             # release the slow request not to have hanging process

tests/shared/test_session.py

@@ -270,12 +270,10 @@ async def test_response_id_non_numeric_string_no_match():
         async def make_request(client_session: ClientSession):
             try:
                 # Use a short timeout since we expect this to fail
-                from datetime import timedelta
-
                 await client_session.send_request(
                     ClientRequest(types.PingRequest()),
                     types.EmptyResult,
-                    request_read_timeout_seconds=timedelta(seconds=0.5),
+                    request_read_timeout_seconds=0.5,
                 )
                 pytest.fail("Expected timeout")  # pragma: no cover
             except McpError as e:

tests/shared/test_streamable_http.py

@@ -9,7 +9,6 @@ import multiprocessing
 import socket
 import time
 from collections.abc import Generator
-from datetime import timedelta
 from typing import Any
 from unittest.mock import MagicMock
 
@@ -2370,8 +2369,8 @@ async def test_streamable_http_transport_deprecated_params_ignored(basic_server:
         transport = StreamableHTTPTransport(  # pyright: ignore[reportDeprecated]
             url=f"{basic_server_url}/mcp",
             headers={"X-Should-Be-Ignored": "ignored"},
-            timeout=999,
-            sse_read_timeout=timedelta(seconds=999),
+            timeout=999.0,
+            sse_read_timeout=999.0,
             auth=None,
         )