mirror of https://github.com/python/cpython
515 lines
20 KiB
Python
515 lines
20 KiB
Python
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import unittest
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from test import test_support
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import subprocess
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import sys
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import signal
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import os
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import tempfile
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import time
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mswindows = (sys.platform == "win32")
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#
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# Depends on the following external programs: Python
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#
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if 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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class ProcessTestCase(unittest.TestCase):
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def mkstemp(self):
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"""wrapper for mkstemp, calling mktemp if mkstemp is not available"""
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if hasattr(tempfile, "mkstemp"):
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return tempfile.mkstemp()
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else:
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fname = tempfile.mktemp()
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return os.open(fname, os.O_RDWR|os.O_CREAT), fname
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#
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# Generic tests
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#
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def test_call_seq(self):
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"""call() function with sequence argument"""
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rc = subprocess.call([sys.executable, "-c", "import sys; sys.exit(47)"])
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self.assertEqual(rc, 47)
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def test_call_kwargs(self):
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"""call() function with keyword args"""
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newenv = os.environ.copy()
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newenv["FRUIT"] = "banana"
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rc = subprocess.call([sys.executable, "-c",
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'import sys, os;' \
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'sys.exit(os.getenv("FRUIT")=="banana")'],
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env=newenv)
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self.assertEqual(rc, 1)
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def test_stdin_none(self):
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""".stdin is None when not redirected"""
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p = subprocess.Popen([sys.executable, "-c", 'print "banana"'],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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p.wait()
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self.assertEqual(p.stdin, None)
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def test_stdout_none(self):
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""".stdout is None when not redirected"""
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p = subprocess.Popen([sys.executable, "-c", 'print "banana"'],
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stdin=subprocess.PIPE, stderr=subprocess.PIPE)
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p.wait()
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self.assertEqual(p.stdout, None)
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def test_stderr_none(self):
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""".stderr is None when not redirected"""
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p = subprocess.Popen([sys.executable, "-c", 'print "banana"'],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE)
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p.wait()
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self.assertEqual(p.stderr, None)
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def test_executable(self):
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"""executable"""
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p = subprocess.Popen(["somethingyoudonthave", "-c", "import sys; sys.exit(47)"],
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executable=sys.executable)
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p.wait()
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self.assertEqual(p.returncode, 47)
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def test_stdin_pipe(self):
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"""stdin redirection"""
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=subprocess.PIPE)
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p.stdin.write("pear")
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p.stdin.close()
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdin_filedes(self):
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"""stdin is set to open file descriptor"""
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tf = tempfile.TemporaryFile()
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d = tf.fileno()
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os.write(d, "pear")
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os.lseek(d, 0, 0)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=d)
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdin_fileobj(self):
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"""stdin is set to open file object"""
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tf = tempfile.TemporaryFile()
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tf.write("pear")
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tf.seek(0)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=tf)
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdout_pipe(self):
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"""stdout redirection"""
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("orange")'],
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stdout=subprocess.PIPE)
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self.assertEqual(p.stdout.read(), "orange")
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def test_stdout_filedes(self):
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"""stdout is set to open file descriptor"""
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tf = tempfile.TemporaryFile()
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d = tf.fileno()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("orange")'],
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stdout=d)
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p.wait()
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os.lseek(d, 0, 0)
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self.assertEqual(os.read(d, 1024), "orange")
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def test_stdout_fileobj(self):
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"""stdout is set to open file object"""
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tf = tempfile.TemporaryFile()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("orange")'],
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stdout=tf)
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p.wait()
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tf.seek(0)
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self.assertEqual(tf.read(), "orange")
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def test_stderr_pipe(self):
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"""stderr redirection"""
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=subprocess.PIPE)
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self.assertEqual(p.stderr.read(), "strawberry")
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def test_stderr_filedes(self):
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"""stderr is set to open file descriptor"""
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tf = tempfile.TemporaryFile()
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d = tf.fileno()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=d)
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p.wait()
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os.lseek(d, 0, 0)
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self.assertEqual(os.read(d, 1024), "strawberry")
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def test_stderr_fileobj(self):
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"""stderr is set to open file object"""
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tf = tempfile.TemporaryFile()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=tf)
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p.wait()
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tf.seek(0)
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self.assertEqual(tf.read(), "strawberry")
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def test_stdout_stderr_pipe(self):
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"""capture stdout and stderr to the same pipe"""
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;' \
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'sys.stdout.write("apple");' \
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'sys.stdout.flush();' \
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'sys.stderr.write("orange")'],
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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self.assertEqual(p.stdout.read(), "appleorange")
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def test_stdout_stderr_file(self):
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"""capture stdout and stderr to the same open file"""
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tf = tempfile.TemporaryFile()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;' \
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'sys.stdout.write("apple");' \
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'sys.stdout.flush();' \
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'sys.stderr.write("orange")'],
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stdout=tf,
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stderr=tf)
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p.wait()
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tf.seek(0)
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self.assertEqual(tf.read(), "appleorange")
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def test_cwd(self):
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"""cwd"""
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tmpdir = os.getenv("TEMP", "/tmp")
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tmpdir = os.path.realpath(tmpdir)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;' \
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'sys.stdout.write(os.getcwd())'],
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stdout=subprocess.PIPE,
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cwd=tmpdir)
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self.assertEqual(p.stdout.read(), tmpdir)
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def test_env(self):
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"""env"""
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newenv = os.environ.copy()
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newenv["FRUIT"] = "orange"
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;' \
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'sys.stdout.write(os.getenv("FRUIT"))'],
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stdout=subprocess.PIPE,
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env=newenv)
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self.assertEqual(p.stdout.read(), "orange")
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def test_communicate(self):
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"""communicate()"""
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p = subprocess.Popen([sys.executable, "-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, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(stdout, stderr) = p.communicate("banana")
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self.assertEqual(stdout, "banana")
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self.assertEqual(stderr, "pineapple")
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def test_communicate_returns(self):
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"""communicate() should return None if no redirection is active"""
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p = subprocess.Popen([sys.executable, "-c", "import sys; sys.exit(47)"])
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(stdout, stderr) = p.communicate()
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self.assertEqual(stdout, None)
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self.assertEqual(stderr, None)
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def test_communicate_pipe_buf(self):
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"""communicate() with writes larger than pipe_buf"""
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# This test will probably deadlock rather than fail, if
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# communicate() does not work properly.
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x, y = os.pipe()
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if mswindows:
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pipe_buf = 512
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else:
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pipe_buf = os.fpathconf(x, "PC_PIPE_BUF")
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os.close(x)
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os.close(y)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stdout.write(sys.stdin.read(47));' \
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'sys.stderr.write("xyz"*%d);' \
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'sys.stdout.write(sys.stdin.read())' % pipe_buf],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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string_to_write = "abc"*pipe_buf
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(stdout, stderr) = p.communicate(string_to_write)
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self.assertEqual(stdout, string_to_write)
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def test_writes_before_communicate(self):
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"""stdin.write before communicate()"""
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;' \
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'sys.stdout.write(sys.stdin.read())'],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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p.stdin.write("banana")
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(stdout, stderr) = p.communicate("split")
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self.assertEqual(stdout, "bananasplit")
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self.assertEqual(stderr, "")
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def test_universal_newlines(self):
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"""universal newlines"""
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p = subprocess.Popen([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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stdout=subprocess.PIPE,
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universal_newlines=1)
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stdout = p.stdout.read()
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if hasattr(open, 'newlines'):
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# Interpreter with universal newline support
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self.assertEqual(stdout, "line1\nline2\nline3\nline4\nline5\nline6")
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else:
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# Interpreter without universal newline support
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self.assertEqual(stdout, "line1\nline2\rline3\r\nline4\r\nline5\nline6")
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def test_universal_newlines_communicate(self):
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"""universal newlines through communicate()"""
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p = subprocess.Popen([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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stdout=subprocess.PIPE, stderr=subprocess.PIPE,
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universal_newlines=1)
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(stdout, stderr) = p.communicate()
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if hasattr(open, 'newlines'):
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# Interpreter with universal newline support
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self.assertEqual(stdout, "line1\nline2\nline3\nline4\nline5\nline6")
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else:
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# Interpreter without universal newline support
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self.assertEqual(stdout, "line1\nline2\rline3\r\nline4\r\nline5\nline6")
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def test_no_leaking(self):
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"""Make sure we leak no resources"""
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for i in range(1026):
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p = subprocess.Popen([sys.executable, "-c", "import sys;sys.stdout.write(sys.stdin.read())"],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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data = p.communicate("lime")[0]
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self.assertEqual(data, "lime")
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def test_list2cmdline(self):
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"""list2cmdline"""
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self.assertEqual(subprocess.list2cmdline(['a b c', 'd', 'e']),
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'"a b c" d e')
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self.assertEqual(subprocess.list2cmdline(['ab"c', '\\', 'd']),
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'ab\\"c \\ d')
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self.assertEqual(subprocess.list2cmdline(['a\\\\\\b', 'de fg', 'h']),
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'a\\\\\\b "de fg" h')
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self.assertEqual(subprocess.list2cmdline(['a\\"b', 'c', 'd']),
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'a\\\\\\"b c d')
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self.assertEqual(subprocess.list2cmdline(['a\\\\b c', 'd', 'e']),
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'"a\\\\b c" d e')
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self.assertEqual(subprocess.list2cmdline(['a\\\\b\\ c', 'd', 'e']),
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'"a\\\\b\\ c" d e')
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def test_poll(self):
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"""poll"""
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p = subprocess.Popen([sys.executable,
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"-c", "import time; time.sleep(4)"])
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while p.poll() == None:
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sys.stdout.write(".")
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sys.stdout.flush()
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time.sleep(0.5)
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# Subsequent invocations should just return the returncode
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self.assertEqual(p.poll(), 0)
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def test_wait(self):
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"""wait"""
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p = subprocess.Popen([sys.executable,
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"-c", "import time; time.sleep(2)"])
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self.assertEqual(p.wait(), 0)
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# Subsequent invocations should just return the returncode
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self.assertEqual(p.wait(), 0)
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#
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# POSIX tests
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#
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if not mswindows:
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def test_exceptions(self):
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"""catched & re-raised exceptions"""
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try:
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p = subprocess.Popen([sys.executable, "-c", ""],
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cwd="/this/path/does/not/exist")
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except OSError, e:
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# The attribute child_traceback should contain "os.chdir"
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# somewhere.
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self.assertNotEqual(e.child_traceback.find("os.chdir"), -1)
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else:
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self.fail("Expected OSError")
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def test_run_abort(self):
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"""returncode handles signal termination"""
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p = subprocess.Popen([sys.executable, "-c", "import os; os.abort()"])
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p.wait()
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self.assertEqual(-p.returncode, signal.SIGABRT)
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def test_preexec(self):
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"""preexec function"""
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;' \
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'sys.stdout.write(os.getenv("FRUIT"))'],
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stdout=subprocess.PIPE,
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preexec_fn=lambda: os.putenv("FRUIT", "apple"))
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self.assertEqual(p.stdout.read(), "apple")
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def test_close_fds(self):
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"""close_fds"""
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# Make sure we have some fds open
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os.pipe()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;' \
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'sys.stdout.write(str(os.dup(0)))'],
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stdout=subprocess.PIPE, close_fds=1)
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# When all fds are closed, the next free fd should be 3.
|
||
|
self.assertEqual(p.stdout.read(), "3")
|
||
|
|
||
|
def test_args_string(self):
|
||
|
"""args is a string"""
|
||
|
f, fname = self.mkstemp()
|
||
|
os.write(f, "#!/bin/sh\n")
|
||
|
os.write(f, "exec %s -c 'import sys; sys.exit(47)'\n" % sys.executable)
|
||
|
os.close(f)
|
||
|
os.chmod(fname, 0700)
|
||
|
p = subprocess.Popen(fname)
|
||
|
p.wait()
|
||
|
self.assertEqual(p.returncode, 47)
|
||
|
os.remove(fname)
|
||
|
|
||
|
def test_invalid_args(self):
|
||
|
"""invalid arguments should raise ValueError"""
|
||
|
self.assertRaises(ValueError, subprocess.call,
|
||
|
[sys.executable, "-c", "import sys; sys.exit(47)"],
|
||
|
startupinfo=47)
|
||
|
self.assertRaises(ValueError, subprocess.call,
|
||
|
[sys.executable, "-c", "import sys; sys.exit(47)"],
|
||
|
creationflags=47)
|
||
|
|
||
|
def test_shell_sequence(self):
|
||
|
"""Run command through the shell (sequence)"""
|
||
|
newenv = os.environ.copy()
|
||
|
newenv["FRUIT"] = "apple"
|
||
|
p = subprocess.Popen(["echo $FRUIT"], shell=1,
|
||
|
stdout=subprocess.PIPE,
|
||
|
env=newenv)
|
||
|
self.assertEqual(p.stdout.read().strip(), "apple")
|
||
|
|
||
|
def test_shell_string(self):
|
||
|
"""Run command through the shell (string)"""
|
||
|
newenv = os.environ.copy()
|
||
|
newenv["FRUIT"] = "apple"
|
||
|
p = subprocess.Popen("echo $FRUIT", shell=1,
|
||
|
stdout=subprocess.PIPE,
|
||
|
env=newenv)
|
||
|
self.assertEqual(p.stdout.read().strip(), "apple")
|
||
|
|
||
|
def test_call_string(self):
|
||
|
"""call() function with string argument on UNIX"""
|
||
|
f, fname = self.mkstemp()
|
||
|
os.write(f, "#!/bin/sh\n")
|
||
|
os.write(f, "exec %s -c 'import sys; sys.exit(47)'\n" % sys.executable)
|
||
|
os.close(f)
|
||
|
os.chmod(fname, 0700)
|
||
|
rc = subprocess.call(fname)
|
||
|
self.assertEqual(rc, 47)
|
||
|
|
||
|
|
||
|
#
|
||
|
# Windows tests
|
||
|
#
|
||
|
if mswindows:
|
||
|
def test_startupinfo(self):
|
||
|
"""startupinfo argument"""
|
||
|
# We uses hardcoded constants, because we do not want to
|
||
|
# depend on win32all.
|
||
|
STARTF_USESHOWWINDOW = 1
|
||
|
SW_MAXIMIZE = 3
|
||
|
startupinfo = subprocess.STARTUPINFO()
|
||
|
startupinfo.dwFlags = STARTF_USESHOWWINDOW
|
||
|
startupinfo.wShowWindow = SW_MAXIMIZE
|
||
|
# Since Python is a console process, it won't be affected
|
||
|
# by wShowWindow, but the argument should be silently
|
||
|
# ignored
|
||
|
subprocess.call([sys.executable, "-c", "import sys; sys.exit(0)"],
|
||
|
startupinfo=startupinfo)
|
||
|
|
||
|
def test_creationflags(self):
|
||
|
"""creationflags argument"""
|
||
|
CREATE_NEW_CONSOLE = 16
|
||
|
subprocess.call(sys.executable + ' -c "import time; time.sleep(2)"',
|
||
|
creationflags=CREATE_NEW_CONSOLE)
|
||
|
|
||
|
def test_invalid_args(self):
|
||
|
"""invalid arguments should raise ValueError"""
|
||
|
self.assertRaises(ValueError, subprocess.call,
|
||
|
[sys.executable, "-c", "import sys; sys.exit(47)"],
|
||
|
preexec_fn=lambda: 1)
|
||
|
self.assertRaises(ValueError, subprocess.call,
|
||
|
[sys.executable, "-c", "import sys; sys.exit(47)"],
|
||
|
close_fds=True)
|
||
|
|
||
|
def test_shell_sequence(self):
|
||
|
"""Run command through the shell (sequence)"""
|
||
|
newenv = os.environ.copy()
|
||
|
newenv["FRUIT"] = "physalis"
|
||
|
p = subprocess.Popen(["set"], shell=1,
|
||
|
stdout=subprocess.PIPE,
|
||
|
env=newenv)
|
||
|
self.assertNotEqual(p.stdout.read().find("physalis"), -1)
|
||
|
|
||
|
def test_shell_string(self):
|
||
|
"""Run command through the shell (string)"""
|
||
|
newenv = os.environ.copy()
|
||
|
newenv["FRUIT"] = "physalis"
|
||
|
p = subprocess.Popen("set", shell=1,
|
||
|
stdout=subprocess.PIPE,
|
||
|
env=newenv)
|
||
|
self.assertNotEqual(p.stdout.read().find("physalis"), -1)
|
||
|
|
||
|
def test_call_string(self):
|
||
|
"""call() function with string argument on Windows"""
|
||
|
rc = subprocess.call(sys.executable + ' -c "import sys; sys.exit(47)"')
|
||
|
self.assertEqual(rc, 47)
|
||
|
|
||
|
|
||
|
|
||
|
def test_main():
|
||
|
test_support.run_unittest(ProcessTestCase)
|
||
|
|
||
|
if __name__ == "__main__":
|
||
|
test_main()
|
||
|
|