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import sys
import time
import eventlet
from eventlet.green import subprocess
import eventlet.patcher
import tests
original_subprocess = eventlet.patcher.original('subprocess')
def test_subprocess_wait():
# https://bitbucket.org/eventlet/eventlet/issue/89
# In Python 3.3 subprocess.Popen.wait() method acquired `timeout`
# argument.
# RHEL backported it to their Python 2.6 package.
cmd = [sys.executable, "-c", "import time; time.sleep(0.5)"]
p = subprocess.Popen(cmd)
ok = False
t1 = time.time()
try:
p.wait(timeout=0.1)
except subprocess.TimeoutExpired as e:
str(e) # make sure it doesn't throw
assert e.cmd == cmd
assert e.timeout == 0.1
ok = True
tdiff = time.time() - t1
assert ok, 'did not raise subprocess.TimeoutExpired'
assert 0.1 <= tdiff <= 0.2, 'did not stop within allowed time'
def test_communicate_with_poll():
# This test was being skipped since git 25812fca8, I don't there's
# a need to do this. The original comment:
#
# https://github.com/eventlet/eventlet/pull/24
# `eventlet.green.subprocess.Popen.communicate()` was broken
# in Python 2.7 because the usage of the `select` module was moved from
# `_communicate` into two other methods `_communicate_with_select`
# and `_communicate_with_poll`. Link to 2.7's implementation:
# http://hg.python.org/cpython/file/2145593d108d/Lib/subprocess.py#l1255
p = subprocess.Popen(
[sys.executable, '-c', 'import time; time.sleep(0.5)'],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
t1 = time.time()
eventlet.with_timeout(0.1, p.communicate, timeout_value=True)
tdiff = time.time() - t1
assert 0.1 <= tdiff <= 0.2, 'did not stop within allowed time'
def test_close_popen_stdin_with_close_fds():
p = subprocess.Popen(
['ls'],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
close_fds=True,
shell=False,
cwd=None,
env=None)
p.communicate(None)
try:
p.stdin.close()
except Exception as e:
assert False, "Exception should not be raised, got %r instead" % e
def test_universal_lines():
p = subprocess.Popen(
[sys.executable, '--version'],
shell=False,
stdout=subprocess.PIPE,
universal_newlines=True)
p.communicate(None)
def test_patched_communicate_290():
# https://github.com/eventlet/eventlet/issues/290
# Certain order of import and monkey_patch breaks subprocess communicate()
# with AttributeError module `select` has no `poll` on Linux
# unpatched methods are removed for safety reasons in commit f63165c0e3
tests.run_isolated('subprocess_patched_communicate.py')
def test_check_call_without_timeout_works():
# There was a regression that'd result in the following exception:
# TypeError: check_call() missing 1 required keyword-only argument: 'timeout'
subprocess.check_call(
['ls'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
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