75 lines
2 KiB
Python
75 lines
2 KiB
Python
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"""Test async/await integration"""
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from distutils.version import LooseVersion as V
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import sys
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import pytest
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import IPython
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from .utils import execute, flush_channels, start_new_kernel, TIMEOUT
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from .test_message_spec import validate_message
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KC = KM = None
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def setup_function():
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"""start the global kernel (if it isn't running) and return its client"""
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global KM, KC
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KM, KC = start_new_kernel()
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flush_channels(KC)
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def teardown_function():
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KC.stop_channels()
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KM.shutdown_kernel(now=True)
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skip_without_async = pytest.mark.skipif(
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sys.version_info < (3, 5) or V(IPython.__version__) < V("7.0"),
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reason="IPython >=7 with async/await required",
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)
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@skip_without_async
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def test_async_await():
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flush_channels(KC)
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msg_id, content = execute("import asyncio; await asyncio.sleep(0.1)", KC)
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assert content["status"] == "ok", content
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@pytest.mark.parametrize("asynclib", ["asyncio", "trio", "curio"])
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@skip_without_async
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def test_async_interrupt(asynclib, request):
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try:
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__import__(asynclib)
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except ImportError:
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pytest.skip("Requires %s" % asynclib)
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request.addfinalizer(lambda: execute("%autoawait asyncio", KC))
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flush_channels(KC)
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msg_id, content = execute("%autoawait " + asynclib, KC)
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assert content["status"] == "ok", content
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flush_channels(KC)
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msg_id = KC.execute(
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"print('begin'); import {0}; await {0}.sleep(5)".format(asynclib)
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)
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busy = KC.get_iopub_msg(timeout=TIMEOUT)
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validate_message(busy, "status", msg_id)
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assert busy["content"]["execution_state"] == "busy"
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echo = KC.get_iopub_msg(timeout=TIMEOUT)
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validate_message(echo, "execute_input")
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stream = KC.get_iopub_msg(timeout=TIMEOUT)
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# wait for the stream output to be sure kernel is in the async block
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validate_message(stream, "stream")
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assert stream["content"]["text"] == "begin\n"
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KM.interrupt_kernel()
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reply = KC.get_shell_msg()["content"]
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assert reply["status"] == "error", reply
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assert reply["ename"] in {"CancelledError", "KeyboardInterrupt"}
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flush_channels(KC)
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