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from __future__ import annotations
import contextlib
import re
from operator import add
from unittest import mock
import pytest
from packaging.version import parse as parse_version
from tlz import valmap
from distributed.client import wait
from distributed.utils_test import dec, gen_cluster, gen_tls_cluster, inc, throws
from distributed.worker import dumps_task
ipywidgets = pytest.importorskip("ipywidgets")
from ipykernel.comm import Comm
from ipywidgets import Widget
from distributed.diagnostics.progressbar import (
MultiProgressWidget,
ProgressWidget,
progress,
)
#################
# Utility stuff #
#################
# Taken from ipywidgets/widgets/tests/test_interaction.py
# https://github.com/ipython/ipywidgets
# Licensed under Modified BSD. Copyright IPython Development Team. See:
# https://github.com/ipython/ipywidgets/blob/master/COPYING.md
class DummyComm(Comm):
comm_id = "a-b-c-d"
def open(self, *args, **kwargs):
pass
def send(self, *args, **kwargs):
pass
def close(self, *args, **kwargs):
pass
_DISPLAY_ATTR = (
"_repr_mimebundle_"
if parse_version(ipywidgets.__version__) >= parse_version("8.0.0")
else "_ipython_display_"
)
def _comm_default(self):
return DummyComm()
@contextlib.contextmanager
def mock_widget():
with mock.patch(
f"ipywidgets.Widget.{_DISPLAY_ATTR}", side_effect=NotImplementedError
):
assert not hasattr(Widget, "_comm_default")
Widget._comm_default = _comm_default
try:
yield
finally:
del Widget._comm_default
def f(**kwargs):
pass
# End code taken from ipywidgets
#####################
# Distributed stuff #
#####################
@mock_widget()
@gen_cluster(client=True)
async def test_progressbar_widget(c, s, a, b):
x = c.submit(inc, 1)
y = c.submit(inc, x)
z = c.submit(inc, y)
await wait(z)
progress = ProgressWidget([z.key], scheduler=s.address, complete=True)
await progress.listen()
assert progress.bar.value == 1.0
assert "3 / 3" in progress.bar_text.value
progress = ProgressWidget([z.key], scheduler=s.address)
await progress.listen()
@mock_widget()
@gen_cluster(client=True)
async def test_multi_progressbar_widget(c, s, a, b):
x1 = c.submit(inc, 1)
x2 = c.submit(inc, x1)
x3 = c.submit(inc, x2)
y1 = c.submit(dec, x3)
y2 = c.submit(dec, y1)
e = c.submit(throws, y2)
other = c.submit(inc, 123)
await wait([other, e])
p = MultiProgressWidget([e.key], scheduler=s.address, complete=True)
await p.listen()
assert p.bars["inc"].value == 1.0
assert p.bars["dec"].value == 1.0
assert p.bars["throws"].value == 0.0
assert "3 / 3" in p.bar_texts["inc"].value
assert "2 / 2" in p.bar_texts["dec"].value
assert "0 / 1" in p.bar_texts["throws"].value
assert p.bars["inc"].bar_style == "success"
assert p.bars["dec"].bar_style == "success"
assert p.bars["throws"].bar_style == "danger"
assert p.status == "error"
assert "Exception" in p.elapsed_time.value
try:
throws(1)
except Exception as e:
assert repr(e) in p.elapsed_time.value
capacities = [
int(re.search(r"\d+ / \d+", row.children[0].value).group().split(" / ")[1])
for row in p.bar_widgets.children
]
assert sorted(capacities, reverse=True) == capacities
@mock_widget()
@gen_cluster()
async def test_multi_progressbar_widget_after_close(s, a, b):
s.update_graph(
tasks=valmap(
dumps_task,
{
"x-1": (inc, 1),
"x-2": (inc, "x-1"),
"x-3": (inc, "x-2"),
"y-1": (dec, "x-3"),
"y-2": (dec, "y-1"),
"e": (throws, "y-2"),
"other": (inc, 123),
},
),
keys=["e"],
dependencies={
"x-2": {"x-1"},
"x-3": {"x-2"},
"y-1": {"x-3"},
"y-2": {"y-1"},
"e": {"y-2"},
},
)
p = MultiProgressWidget(["x-1", "x-2", "x-3"], scheduler=s.address)
await p.listen()
assert "x" in p.bars
@mock_widget()
def test_values(client):
L = [client.submit(inc, i) for i in range(5)]
wait(L)
p = MultiProgressWidget(L)
client.sync(p.listen)
assert set(p.bars) == {"inc"}
assert p.status == "finished"
assert p.comm.closed()
assert "5 / 5" in p.bar_texts["inc"].value
assert p.bars["inc"].value == 1.0
x = client.submit(throws, 1)
p = MultiProgressWidget([x])
client.sync(p.listen)
assert p.status == "error"
@mock_widget()
def test_progressbar_done(client):
L = [client.submit(inc, i) for i in range(5)]
wait(L)
p = ProgressWidget(L)
client.sync(p.listen)
assert p.status == "finished"
assert p.bar.value == 1.0
assert p.bar.bar_style == "success"
assert "Finished" in p.elapsed_time.value
f = client.submit(throws, L)
wait([f])
p = ProgressWidget([f])
client.sync(p.listen)
assert p.status == "error"
assert p.bar.value == 0.0
assert p.bar.bar_style == "danger"
assert "Exception" in p.elapsed_time.value
try:
throws(1)
except Exception as e:
assert repr(e) in p.elapsed_time.value
@mock_widget()
def test_progressbar_cancel(client):
import time
L = [client.submit(lambda: time.sleep(0.3), i) for i in range(5)]
p = ProgressWidget(L)
client.sync(p.listen)
L[-1].cancel()
wait(L[:-1])
assert p.status == "error"
assert p.bar.value == 0 # no tasks finish before cancel is called
@mock_widget()
@gen_cluster()
async def test_multibar_complete(s, a, b):
s.update_graph(
tasks=valmap(
dumps_task,
{
"x-1": (inc, 1),
"x-2": (inc, "x-1"),
"x-3": (inc, "x-2"),
"y-1": (dec, "x-3"),
"y-2": (dec, "y-1"),
"e": (throws, "y-2"),
"other": (inc, 123),
},
),
keys=["e"],
dependencies={
"x-2": {"x-1"},
"x-3": {"x-2"},
"y-1": {"x-3"},
"y-2": {"y-1"},
"e": {"y-2"},
},
)
p = MultiProgressWidget(["e"], scheduler=s.address, complete=True)
await p.listen()
assert p._last_response["all"] == {"x": 3, "y": 2, "e": 1}
assert all(b.value == 1.0 for k, b in p.bars.items() if k != "e")
assert "3 / 3" in p.bar_texts["x"].value
assert "2 / 2" in p.bar_texts["y"].value
@mock_widget()
def test_fast(client):
L = client.map(inc, range(100))
L2 = client.map(dec, L)
L3 = client.map(add, L, L2)
p = progress(L3, multi=True, complete=True, notebook=True)
client.sync(p.listen)
assert set(p._last_response["all"]) == {"inc", "dec", "add"}
@mock_widget()
@gen_cluster(client=True, client_kwargs={"serializers": ["msgpack"]})
async def test_serializers(c, s, a, b):
x = c.submit(inc, 1)
y = c.submit(inc, x)
z = c.submit(inc, y)
await wait(z)
progress = ProgressWidget([z], scheduler=s.address, complete=True)
await progress.listen()
assert progress.bar.value == 1.0
assert "3 / 3" in progress.bar_text.value
@mock_widget()
@gen_tls_cluster(client=True)
async def test_tls(c, s, a, b):
x = c.submit(inc, 1)
y = c.submit(inc, x)
z = c.submit(inc, y)
await wait(z)
progress = ProgressWidget([z], scheduler=s.address, complete=True)
await progress.listen()
assert progress.bar.value == 1.0
assert "3 / 3" in progress.bar_text.value
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