test: align MCP transient reconnect coverage

maintainer edit: update the existing transient retry tests for reconnect-first behavior and keep structured retry-failure coverage in the focused MCP transient suite.

tests/tools/test_mcp_tool.py

@@ -478,61 +478,6 @@ async def test_execute_handles_generic_exception() -> None:
     assert is_tool_error_result(wrapper.name, result)
 
 
-@pytest.mark.asyncio
-async def test_execute_reconnects_on_transient_failure() -> None:
-    class ClosedResourceError(Exception):
-        pass
-
-    reconnects = 0
-
-    async def stale_call_tool(_name: str, arguments: dict) -> object:
-        raise ClosedResourceError("stream closed")
-
-    async def fresh_call_tool(_name: str, arguments: dict) -> object:
-        return SimpleNamespace(content=[_FakeTextContent("ok")])
-
-    wrapper = _make_wrapper(SimpleNamespace(call_tool=stale_call_tool))
-
-    async def reconnect(_server_name: str, _tool_name: str, _stale_tool: object) -> object:
-        nonlocal reconnects
-        reconnects += 1
-        return SimpleNamespace(_session=SimpleNamespace(call_tool=fresh_call_tool))
-
-    wrapper.set_reconnect_handler(reconnect)
-
-    result = await wrapper.execute()
-
-    assert result == "ok"
-    assert reconnects == 1
-
-
-@pytest.mark.asyncio
-async def test_execute_marks_transient_retry_failure_as_tool_error(
-    monkeypatch: pytest.MonkeyPatch,
-) -> None:
-    class ClosedResourceError(Exception):
-        pass
-
-    calls = 0
-
-    async def call_tool(_name: str, arguments: dict) -> object:
-        nonlocal calls
-        calls += 1
-        raise ClosedResourceError("closed")
-
-    async def fast_sleep(_delay: float) -> None:
-        return None
-
-    monkeypatch.setattr(mcp_mod.asyncio, "sleep", fast_sleep)
-    wrapper = _make_wrapper(SimpleNamespace(call_tool=call_tool))
-
-    result = await wrapper.execute()
-
-    assert calls == 2
-    assert result == "(MCP tool call failed after retry: ClosedResourceError)"
-    assert is_tool_error_result(wrapper.name, result)
-
-
 def _make_tool_def(name: str) -> SimpleNamespace:
     return SimpleNamespace(
         name=name,