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"""Tests `tqdm.asyncio`."""
import asyncio
from functools import partial
from sys import platform
from time import time
from tqdm.asyncio import tarange, tqdm_asyncio
from .tests_tqdm import StringIO, closing, mark
tqdm = partial(tqdm_asyncio, miniters=0, mininterval=0)
trange = partial(tarange, miniters=0, mininterval=0)
as_completed = partial(tqdm_asyncio.as_completed, miniters=0, mininterval=0)
gather = partial(tqdm_asyncio.gather, miniters=0, mininterval=0)
def count(start=0, step=1):
i = start
while True:
new_start = yield i
if new_start is None:
i += step
else:
i = new_start
async def acount(*args, **kwargs):
for i in count(*args, **kwargs):
yield i
@mark.asyncio
async def test_break():
"""Test asyncio break"""
pbar = tqdm(count())
async for _ in pbar:
break
pbar.close()
@mark.asyncio
async def test_generators(capsys):
"""Test asyncio generators"""
with tqdm(count(), desc="counter") as pbar:
async for i in pbar:
if i >= 8:
break
_, err = capsys.readouterr()
assert '9it' in err
with tqdm(acount(), desc="async_counter") as pbar:
async for i in pbar:
if i >= 8:
break
_, err = capsys.readouterr()
assert '9it' in err
@mark.asyncio
async def test_range():
"""Test asyncio range"""
with closing(StringIO()) as our_file:
async for _ in tqdm(range(9), desc="range", file=our_file):
pass
assert '9/9' in our_file.getvalue()
our_file.seek(0)
our_file.truncate()
async for _ in trange(9, desc="trange", file=our_file):
pass
assert '9/9' in our_file.getvalue()
@mark.asyncio
async def test_nested():
"""Test asyncio nested"""
with closing(StringIO()) as our_file:
async for _ in tqdm(trange(9, desc="inner", file=our_file),
desc="outer", file=our_file):
pass
assert 'inner: 100%' in our_file.getvalue()
assert 'outer: 100%' in our_file.getvalue()
@mark.asyncio
async def test_coroutines():
"""Test asyncio coroutine.send"""
with closing(StringIO()) as our_file:
with tqdm(count(), file=our_file) as pbar:
async for i in pbar:
if i == 9:
pbar.send(-10)
elif i < 0:
assert i == -9
break
assert '10it' in our_file.getvalue()
@mark.slow
@mark.asyncio
@mark.parametrize("tol", [0.2 if platform.startswith("darwin") else 0.1])
async def test_as_completed(capsys, tol):
"""Test asyncio as_completed"""
for retry in range(3):
t = time()
skew = time() - t
for i in as_completed([asyncio.sleep(0.01 * i) for i in range(30, 0, -1)]):
await i
t = time() - t - 2 * skew
try:
assert 0.3 * (1 - tol) < t < 0.3 * (1 + tol), t
_, err = capsys.readouterr()
assert '30/30' in err
except AssertionError:
if retry == 2:
raise
async def double(i):
return i * 2
@mark.asyncio
async def test_gather(capsys):
"""Test asyncio gather"""
res = await gather(*map(double, range(30)))
_, err = capsys.readouterr()
assert '30/30' in err
assert res == list(range(0, 30 * 2, 2))
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