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from __future__ import annotations
import sys
from unittest import mock
import pytest
from packaging.version import Version
from tornado.httpclient import AsyncHTTPClient
from distributed import Scheduler
from distributed.utils_test import gen_test
@gen_test()
async def test_missing_bokeh():
with mock.patch.dict(sys.modules, {"bokeh": None}):
# NOTE: mocking here is fiddly; if any of these get refactored or import order
# changes, this may break.
sys.modules.pop("distributed.dashboard.scheduler", None)
sys.modules.pop("distributed.dashboard.core", None)
sys.modules.pop("distributed.dashboard.utils", None)
async with Scheduler(dashboard_address=":0") as s:
http_client = AsyncHTTPClient()
response = await http_client.fetch(
f"http://localhost:{s.http_server.port}/status"
)
assert response.code == 200
body = response.body.decode()
assert "Dask needs bokeh" in body
@gen_test()
async def test_bokeh_version_too_low():
pytest.importorskip("bokeh")
with mock.patch.dict(sys.modules):
# Remove these imports, so when the scheduler imports
# `distributed.dashboard.scheduler`, it has to re-import `dashboard.core`, which
# is where the bokeh version detection happens at import time, via
# `dashboard.utils.BOKEH_VERSION`.
sys.modules.pop("distributed.dashboard.scheduler", None)
sys.modules.pop("distributed.dashboard.core", None)
with mock.patch("distributed.dashboard.utils.BOKEH_VERSION", Version("1.4.0")):
with pytest.warns(UserWarning, match="1.4.0"):
async with Scheduler(dashboard_address=":0") as s:
http_client = AsyncHTTPClient()
response = await http_client.fetch(
f"http://localhost:{s.http_server.port}/status"
)
assert response.code == 200
body = response.body.decode()
assert "Dask needs bokeh" in body
@gen_test()
async def test_bokeh_version_too_high():
pytest.importorskip("bokeh")
with mock.patch.dict(sys.modules):
sys.modules.pop("distributed.dashboard.scheduler", None)
sys.modules.pop("distributed.dashboard.core", None)
with mock.patch("distributed.dashboard.utils.BOKEH_VERSION", Version("3.0.1")):
with pytest.warns(UserWarning, match="3.0.1"):
async with Scheduler(dashboard_address=":0") as s:
http_client = AsyncHTTPClient()
response = await http_client.fetch(
f"http://localhost:{s.http_server.port}/status"
)
assert response.code == 200
body = response.body.decode()
assert "Dask needs bokeh" in body
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