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519 lines
20 KiB
Python
519 lines
20 KiB
Python
5 years ago
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import sys
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import os
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import errno
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import unittest
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import time
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import tempfile
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import gevent.testing as greentest
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import gevent
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from gevent.testing import mock
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from gevent import subprocess
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if not hasattr(subprocess, 'mswindows'):
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# PyPy3, native python subprocess
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subprocess.mswindows = False
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PYPY = hasattr(sys, 'pypy_version_info')
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PY3 = sys.version_info[0] >= 3
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if subprocess.mswindows:
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SETBINARY = 'import msvcrt; msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY);'
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else:
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SETBINARY = ''
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python_universal_newlines = hasattr(sys.stdout, 'newlines')
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# The stdlib of Python 3 on Windows doesn't properly handle universal newlines
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# (it produces broken results compared to Python 2)
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# See gevent.subprocess for more details.
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python_universal_newlines_broken = PY3 and subprocess.mswindows
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@greentest.skipWithoutResource('subprocess')
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class TestPopen(greentest.TestCase):
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# Use the normal error handling. Make sure that any background greenlets
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# subprocess spawns propagate errors as expected.
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error_fatal = False
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def test_exit(self):
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popen = subprocess.Popen([sys.executable, '-c', 'import sys; sys.exit(10)'])
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self.assertEqual(popen.wait(), 10)
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def test_wait(self):
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popen = subprocess.Popen([sys.executable, '-c', 'import sys; sys.exit(11)'])
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gevent.wait([popen])
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self.assertEqual(popen.poll(), 11)
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def test_child_exception(self):
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with self.assertRaises(OSError) as exc:
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subprocess.Popen(['*']).wait()
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self.assertEqual(exc.exception.errno, 2)
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def test_leak(self):
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num_before = greentest.get_number_open_files()
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p = subprocess.Popen([sys.executable, "-c", "print()"],
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stdout=subprocess.PIPE)
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p.wait()
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p.stdout.close()
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del p
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num_after = greentest.get_number_open_files()
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self.assertEqual(num_before, num_after)
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@greentest.skipOnLibuvOnPyPyOnWin("hangs")
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def test_communicate(self):
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p = subprocess.Popen([sys.executable, "-W", "ignore",
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"-c",
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'import sys,os;'
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'sys.stderr.write("pineapple");'
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'sys.stdout.write(sys.stdin.read())'],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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(stdout, stderr) = p.communicate(b"banana")
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self.assertEqual(stdout, b"banana")
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if sys.executable.endswith('-dbg'):
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assert stderr.startswith(b'pineapple')
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else:
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self.assertEqual(stderr, b"pineapple")
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@greentest.skipIf(subprocess.mswindows,
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"Windows does weird things here")
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@greentest.skipOnLibuvOnCIOnPyPy("Sometimes segfaults")
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def test_communicate_universal(self):
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# Native string all the things. See https://github.com/gevent/gevent/issues/1039
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p = subprocess.Popen(
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[
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sys.executable,
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"-W", "ignore",
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"-c",
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'import sys,os;'
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'sys.stderr.write("pineapple\\r\\n\\xff\\xff\\xf2\\xf9\\r\\n");'
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'sys.stdout.write(sys.stdin.read())'
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],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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universal_newlines=True
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)
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(stdout, stderr) = p.communicate('banana\r\n\xff\xff\xf2\xf9\r\n')
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self.assertIsInstance(stdout, str)
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self.assertIsInstance(stderr, str)
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self.assertEqual(stdout,
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'banana\n\xff\xff\xf2\xf9\n')
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self.assertEqual(stderr,
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'pineapple\n\xff\xff\xf2\xf9\n')
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@greentest.skipOnWindows("Windows IO is weird; this doesn't raise")
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@greentest.skipOnPy2("Only Python 2 decodes")
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def test_communicate_undecodable(self):
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# If the subprocess writes non-decodable data, `communicate` raises the
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# same UnicodeDecodeError that the stdlib does, instead of
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# printing it to the hub. This only applies to Python 3, because only it
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# will actually use text mode.
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# See https://github.com/gevent/gevent/issues/1510
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with subprocess.Popen(
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[
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sys.executable,
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'-W', 'ignore',
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'-c',
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"import os, sys; "
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r'os.write(sys.stdout.fileno(), b"\xff")'
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],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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text=True, universal_newlines=True
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) as p:
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with self.assertRaises(UnicodeDecodeError):
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p.communicate()
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@greentest.skipOnLibuvOnPyPyOnWin("hangs")
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def test_universal1(self):
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with subprocess.Popen(
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[
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sys.executable, "-c",
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'import sys,os;' + SETBINARY +
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'sys.stdout.write("line1\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line2\\r");'
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'sys.stdout.flush();'
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'sys.stdout.write("line3\\r\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line4\\r");'
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'sys.stdout.flush();'
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'sys.stdout.write("\\nline5");'
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'sys.stdout.flush();'
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'sys.stdout.write("\\nline6");'
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],
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stdout=subprocess.PIPE,
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universal_newlines=1,
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bufsize=1
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) as p:
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stdout = p.stdout.read()
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if python_universal_newlines:
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# Interpreter with universal newline support
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if not python_universal_newlines_broken:
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self.assertEqual(stdout,
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"line1\nline2\nline3\nline4\nline5\nline6")
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else:
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# Note the extra newline after line 3
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self.assertEqual(stdout,
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'line1\nline2\nline3\n\nline4\n\nline5\nline6')
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else:
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# Interpreter without universal newline support
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self.assertEqual(stdout,
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"line1\nline2\rline3\r\nline4\r\nline5\nline6")
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@greentest.skipOnLibuvOnPyPyOnWin("hangs")
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def test_universal2(self):
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with subprocess.Popen(
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[
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sys.executable, "-c",
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'import sys,os;' + SETBINARY +
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'sys.stdout.write("line1\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line2\\r");'
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'sys.stdout.flush();'
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'sys.stdout.write("line3\\r\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line4\\r\\nline5");'
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'sys.stdout.flush();'
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'sys.stdout.write("\\nline6");'
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],
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stdout=subprocess.PIPE,
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universal_newlines=1,
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bufsize=1
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) as p:
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stdout = p.stdout.read()
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if python_universal_newlines:
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# Interpreter with universal newline support
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if not python_universal_newlines_broken:
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self.assertEqual(stdout,
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"line1\nline2\nline3\nline4\nline5\nline6")
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else:
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# Note the extra newline after line 3
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self.assertEqual(stdout,
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'line1\nline2\nline3\n\nline4\n\nline5\nline6')
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else:
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# Interpreter without universal newline support
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self.assertEqual(stdout,
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"line1\nline2\rline3\r\nline4\r\nline5\nline6")
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@greentest.skipOnWindows("Uses 'grep' command")
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def test_nonblock_removed(self):
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# see issue #134
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r, w = os.pipe()
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stdin = subprocess.FileObject(r)
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with subprocess.Popen(['grep', 'text'], stdin=stdin) as p:
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try:
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# Closing one half of the pipe causes Python 3 on OS X to terminate the
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# child process; it exits with code 1 and the assert that p.poll is None
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# fails. Removing the close lets it pass under both Python 3 and 2.7.
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# If subprocess.Popen._remove_nonblock_flag is changed to a noop, then
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# the test fails (as expected) even with the close removed
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#os.close(w)
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time.sleep(0.1)
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self.assertEqual(p.poll(), None)
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finally:
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if p.poll() is None:
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p.kill()
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stdin.close()
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os.close(w)
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def test_issue148(self):
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for _ in range(7):
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with self.assertRaises(OSError) as exc:
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with subprocess.Popen('this_name_must_not_exist'):
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pass
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self.assertEqual(exc.exception.errno, errno.ENOENT)
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@greentest.skipOnLibuvOnPyPyOnWin("hangs")
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def test_check_output_keyword_error(self):
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with self.assertRaises(subprocess.CalledProcessError) as exc: # pylint:disable=no-member
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subprocess.check_output([sys.executable, '-c', 'import sys; sys.exit(44)'])
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self.assertEqual(exc.exception.returncode, 44)
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@greentest.skipOnPy3("The default buffer changed in Py3")
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def test_popen_bufsize(self):
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# Test that subprocess has unbuffered output by default
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# (as the vanilla subprocess module)
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with subprocess.Popen(
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[sys.executable, '-u', '-c',
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'import sys; sys.stdout.write(sys.stdin.readline())'],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE
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) as p:
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p.stdin.write(b'foobar\n')
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r = p.stdout.readline()
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self.assertEqual(r, b'foobar\n')
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@greentest.ignores_leakcheck
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@greentest.skipOnWindows("Not sure why?")
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def test_subprocess_in_native_thread(self):
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# gevent.subprocess doesn't work from a background
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# native thread. See #688
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from gevent import monkey
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# must be a native thread; defend against monkey-patching
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ex = []
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Thread = monkey.get_original('threading', 'Thread')
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def fn():
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with self.assertRaises(TypeError) as exc:
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gevent.subprocess.Popen('echo 123', shell=True)
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ex.append(exc.exception)
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thread = Thread(target=fn)
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thread.start()
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thread.join()
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self.assertEqual(len(ex), 1)
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self.assertTrue(isinstance(ex[0], TypeError), ex)
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self.assertEqual(ex[0].args[0], 'child watchers are only available on the default loop')
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@greentest.skipOnLibuvOnPyPyOnWin("hangs")
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def __test_no_output(self, kwargs, kind):
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with subprocess.Popen(
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[sys.executable, '-c', 'pass'],
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stdout=subprocess.PIPE,
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**kwargs
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) as proc:
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stdout, stderr = proc.communicate()
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self.assertIsInstance(stdout, kind)
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self.assertIsNone(stderr)
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@greentest.skipOnLibuvOnCIOnPyPy("Sometimes segfaults; "
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"https://travis-ci.org/gevent/gevent/jobs/327357682")
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def test_universal_newlines_text_mode_no_output_is_always_str(self):
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# If the file is in universal_newlines mode, we should always get a str when
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# there is no output.
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# https://github.com/gevent/gevent/pull/939
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self.__test_no_output({'universal_newlines': True}, str)
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@greentest.skipIf(sys.version_info[:2] < (3, 6), "Need encoding argument")
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def test_encoded_text_mode_no_output_is_str(self):
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# If the file is in universal_newlines mode, we should always get a str when
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# there is no output.
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# https://github.com/gevent/gevent/pull/939
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self.__test_no_output({'encoding': 'utf-8'}, str)
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def test_default_mode_no_output_is_always_str(self):
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# If the file is in default mode, we should always get a str when
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# there is no output.
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# https://github.com/gevent/gevent/pull/939
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self.__test_no_output({}, bytes)
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@greentest.skipOnWindows("Testing POSIX fd closing")
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class TestFDs(unittest.TestCase):
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@mock.patch('os.closerange')
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@mock.patch('gevent.subprocess._set_inheritable')
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@mock.patch('os.close')
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def test_close_fds_brute_force(self, close, set_inheritable, closerange):
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keep = (
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4, 5,
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# Leave a hole
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# 6,
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7,
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)
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subprocess.Popen._close_fds_brute_force(keep, None)
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closerange.assert_has_calls([
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mock.call(3, 4),
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mock.call(8, subprocess.MAXFD),
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])
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set_inheritable.assert_has_calls([
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mock.call(4, True),
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mock.call(5, True),
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])
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close.assert_called_once_with(6)
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@mock.patch('gevent.subprocess.Popen._close_fds_brute_force')
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@mock.patch('os.listdir')
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def test_close_fds_from_path_bad_values(self, listdir, brute_force):
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listdir.return_value = 'Not an Integer'
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subprocess.Popen._close_fds_from_path('path', [], 42)
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brute_force.assert_called_once_with([], 42)
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@mock.patch('os.listdir')
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@mock.patch('os.closerange')
|
||
|
|
@mock.patch('gevent.subprocess._set_inheritable')
|
||
|
|
@mock.patch('os.close')
|
||
|
|
def test_close_fds_from_path(self, close, set_inheritable, closerange, listdir):
|
||
|
|
keep = (
|
||
|
|
4, 5,
|
||
|
|
# Leave a hole
|
||
|
|
# 6,
|
||
|
|
7,
|
||
|
|
)
|
||
|
|
listdir.return_value = ['1', '6', '37']
|
||
|
|
|
||
|
|
subprocess.Popen._close_fds_from_path('path', keep, 5)
|
||
|
|
|
||
|
|
self.assertEqual([], closerange.mock_calls)
|
||
|
|
|
||
|
|
set_inheritable.assert_has_calls([
|
||
|
|
mock.call(4, True),
|
||
|
|
mock.call(7, True),
|
||
|
|
])
|
||
|
|
|
||
|
|
close.assert_has_calls([
|
||
|
|
mock.call(6),
|
||
|
|
mock.call(37),
|
||
|
|
])
|
||
|
|
|
||
|
|
@mock.patch('gevent.subprocess.Popen._close_fds_brute_force')
|
||
|
|
@mock.patch('os.path.isdir')
|
||
|
|
def test_close_fds_no_dir(self, isdir, brute_force):
|
||
|
|
isdir.return_value = False
|
||
|
|
|
||
|
|
subprocess.Popen._close_fds([], 42)
|
||
|
|
brute_force.assert_called_once_with([], 42)
|
||
|
|
isdir.assert_has_calls([
|
||
|
|
mock.call('/proc/self/fd'),
|
||
|
|
mock.call('/dev/fd'),
|
||
|
|
])
|
||
|
|
|
||
|
|
@mock.patch('gevent.subprocess.Popen._close_fds_from_path')
|
||
|
|
@mock.patch('gevent.subprocess.Popen._close_fds_brute_force')
|
||
|
|
@mock.patch('os.path.isdir')
|
||
|
|
def test_close_fds_with_dir(self, isdir, brute_force, from_path):
|
||
|
|
isdir.return_value = True
|
||
|
|
|
||
|
|
subprocess.Popen._close_fds([7], 42)
|
||
|
|
|
||
|
|
self.assertEqual([], brute_force.mock_calls)
|
||
|
|
from_path.assert_called_once_with('/proc/self/fd', [7], 42)
|
||
|
|
|
||
|
|
class RunFuncTestCase(greentest.TestCase):
|
||
|
|
# Based on code from python 3.6+
|
||
|
|
|
||
|
|
__timeout__ = greentest.LARGE_TIMEOUT
|
||
|
|
|
||
|
|
@greentest.skipWithoutResource('subprocess')
|
||
|
|
def run_python(self, code, **kwargs):
|
||
|
|
"""Run Python code in a subprocess using subprocess.run"""
|
||
|
|
argv = [sys.executable, "-c", code]
|
||
|
|
return subprocess.run(argv, **kwargs)
|
||
|
|
|
||
|
|
def test_returncode(self):
|
||
|
|
# call() function with sequence argument
|
||
|
|
cp = self.run_python("import sys; sys.exit(47)")
|
||
|
|
self.assertEqual(cp.returncode, 47)
|
||
|
|
with self.assertRaises(subprocess.CalledProcessError): # pylint:disable=no-member
|
||
|
|
cp.check_returncode()
|
||
|
|
|
||
|
|
def test_check(self):
|
||
|
|
with self.assertRaises(subprocess.CalledProcessError) as c: # pylint:disable=no-member
|
||
|
|
self.run_python("import sys; sys.exit(47)", check=True)
|
||
|
|
self.assertEqual(c.exception.returncode, 47)
|
||
|
|
|
||
|
|
def test_check_zero(self):
|
||
|
|
# check_returncode shouldn't raise when returncode is zero
|
||
|
|
cp = self.run_python("import sys; sys.exit(0)", check=True)
|
||
|
|
self.assertEqual(cp.returncode, 0)
|
||
|
|
|
||
|
|
def test_timeout(self):
|
||
|
|
# run() function with timeout argument; we want to test that the child
|
||
|
|
# process gets killed when the timeout expires. If the child isn't
|
||
|
|
# killed, this call will deadlock since subprocess.run waits for the
|
||
|
|
# child.
|
||
|
|
with self.assertRaises(subprocess.TimeoutExpired):
|
||
|
|
self.run_python("while True: pass", timeout=0.0001)
|
||
|
|
|
||
|
|
@greentest.skipOnLibuvOnPyPyOnWin("hangs")
|
||
|
|
def test_capture_stdout(self):
|
||
|
|
# capture stdout with zero return code
|
||
|
|
cp = self.run_python("print('BDFL')", stdout=subprocess.PIPE)
|
||
|
|
self.assertIn(b'BDFL', cp.stdout)
|
||
|
|
|
||
|
|
@greentest.skipOnLibuvOnPyPyOnWin("hangs")
|
||
|
|
def test_capture_stderr(self):
|
||
|
|
cp = self.run_python("import sys; sys.stderr.write('BDFL')",
|
||
|
|
stderr=subprocess.PIPE)
|
||
|
|
self.assertIn(b'BDFL', cp.stderr)
|
||
|
|
|
||
|
|
@greentest.skipOnLibuvOnPyPyOnWin("hangs")
|
||
|
|
def test_check_output_stdin_arg(self):
|
||
|
|
# run() can be called with stdin set to a file
|
||
|
|
with tempfile.TemporaryFile() as tf:
|
||
|
|
tf.write(b'pear')
|
||
|
|
tf.seek(0)
|
||
|
|
cp = self.run_python(
|
||
|
|
"import sys; sys.stdout.write(sys.stdin.read().upper())",
|
||
|
|
stdin=tf, stdout=subprocess.PIPE)
|
||
|
|
self.assertIn(b'PEAR', cp.stdout)
|
||
|
|
|
||
|
|
@greentest.skipOnLibuvOnPyPyOnWin("hangs")
|
||
|
|
def test_check_output_input_arg(self):
|
||
|
|
# check_output() can be called with input set to a string
|
||
|
|
cp = self.run_python(
|
||
|
|
"import sys; sys.stdout.write(sys.stdin.read().upper())",
|
||
|
|
input=b'pear', stdout=subprocess.PIPE)
|
||
|
|
self.assertIn(b'PEAR', cp.stdout)
|
||
|
|
|
||
|
|
@greentest.skipOnLibuvOnPyPyOnWin("hangs")
|
||
|
|
def test_check_output_stdin_with_input_arg(self):
|
||
|
|
# run() refuses to accept 'stdin' with 'input'
|
||
|
|
with tempfile.TemporaryFile() as tf:
|
||
|
|
tf.write(b'pear')
|
||
|
|
tf.seek(0)
|
||
|
|
with self.assertRaises(ValueError,
|
||
|
|
msg="Expected ValueError when stdin and input args supplied.") as c:
|
||
|
|
self.run_python("print('will not be run')",
|
||
|
|
stdin=tf, input=b'hare')
|
||
|
|
self.assertIn('stdin', c.exception.args[0])
|
||
|
|
self.assertIn('input', c.exception.args[0])
|
||
|
|
|
||
|
|
@greentest.skipOnLibuvOnPyPyOnWin("hangs")
|
||
|
|
def test_check_output_timeout(self):
|
||
|
|
with self.assertRaises(subprocess.TimeoutExpired) as c:
|
||
|
|
self.run_python(
|
||
|
|
(
|
||
|
|
"import sys, time\n"
|
||
|
|
"sys.stdout.write('BDFL')\n"
|
||
|
|
"sys.stdout.flush()\n"
|
||
|
|
"time.sleep(3600)"
|
||
|
|
),
|
||
|
|
# Some heavily loaded buildbots (sparc Debian 3.x) require
|
||
|
|
# this much time to start and print.
|
||
|
|
timeout=3, stdout=subprocess.PIPE)
|
||
|
|
self.assertEqual(c.exception.output, b'BDFL')
|
||
|
|
# output is aliased to stdout
|
||
|
|
self.assertEqual(c.exception.stdout, b'BDFL')
|
||
|
|
|
||
|
|
def test_run_kwargs(self):
|
||
|
|
newenv = os.environ.copy()
|
||
|
|
newenv["FRUIT"] = "banana"
|
||
|
|
cp = self.run_python(('import sys, os;'
|
||
|
|
'sys.exit(33 if os.getenv("FRUIT")=="banana" else 31)'),
|
||
|
|
env=newenv)
|
||
|
|
self.assertEqual(cp.returncode, 33)
|
||
|
|
|
||
|
|
# This test _might_ wind up a bit fragile on loaded build+test machines
|
||
|
|
# as it depends on the timing with wide enough margins for normal situations
|
||
|
|
# but does assert that it happened "soon enough" to believe the right thing
|
||
|
|
# happened.
|
||
|
|
@greentest.skipOnWindows("requires posix like 'sleep' shell command")
|
||
|
|
def test_run_with_shell_timeout_and_capture_output(self):
|
||
|
|
#Output capturing after a timeout mustn't hang forever on open filehandles
|
||
|
|
with self.runs_in_given_time(0.1):
|
||
|
|
with self.assertRaises(subprocess.TimeoutExpired):
|
||
|
|
subprocess.run('sleep 3', shell=True, timeout=0.1,
|
||
|
|
capture_output=True) # New session unspecified.
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
greentest.main()
|