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Python

"""Tests for the contextvars-carrying memory-stream wrappers."""
import anyio
import pytest
from mcp.shared._context_streams import create_context_streams
pytestmark = pytest.mark.anyio
async def test_sync_close_closes_the_underlying_streams() -> None:
"""The wrappers mirror anyio's memory streams: close() is the sync form of aclose()."""
send, receive = create_context_streams[str](1)
await send.send("queued")
send.close()
receive.close()
with pytest.raises(anyio.ClosedResourceError):
await send.send("after close")
with pytest.raises(anyio.ClosedResourceError):
await receive.receive()