Skip test_comm on Trio

Author: davidbrochart

tests/test_comm.py

@@ -7,6 +7,7 @@
 from ipykernel.kernelbase import Kernel
 
 
+@pytest.mark.parametrize("anyio_backend", ["asyncio"])
 def test_comm(kernel: Kernel) -> None:
     manager = CommManager(kernel=kernel)
     kernel.comm_manager = manager  # type:ignore
@@ -34,6 +35,7 @@ def on_message(msg):
     assert c.target_name == "bar"
 
 
+@pytest.mark.parametrize("anyio_backend", ["asyncio"])
 def test_comm_manager(kernel: Kernel) -> None:
     manager = CommManager(kernel=kernel)
     msgs = []
@@ -99,6 +101,7 @@ def on_msg(msg):
     assert comm._closed
 
 
+@pytest.mark.parametrize("anyio_backend", ["asyncio"])
 def test_comm_in_manager(ipkernel: IPythonKernel) -> None:
     with pytest.deprecated_call():
         comm = Comm()