def check_close_std_fds(self, fds):
# Issue #9905: test that subprocess pipes still work properly with
# some standard fds closed
stdin = 0
newfds = []
for a in fds:
b = os.dup(a)
newfds.append(b)
if a == 0:
stdin = b
try:
for fd in fds:
os.close(fd)
out, err = subprocess.Popen([sys.executable, "-c",
'import sys;'
'sys.stdout.write("apple");'
'sys.stdout.flush();'
'sys.stderr.write("orange")'],
stdin=stdin,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE).communicate()
err = test_support.strip_python_stderr(err)
self.assertEqual((out, err), (b'apple', b'orange'))
finally:
for b, a in zip(newfds, fds):
os.dup2(b, a)
for b in newfds:
os.close(b)
def _assert_python(expected_success, *args, **env_vars):
cmd_line = [sys.executable]
if not env_vars:
cmd_line.append('-E')
cmd_line.extend(args)
# Need to preserve the original environment, for in-place testing of
# shared library builds.
env = os.environ.copy()
env.update(env_vars)
p = subprocess.Popen(cmd_line,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env)
try:
out, err = p.communicate()
finally:
subprocess._cleanup()
p.stdout.close()
p.stderr.close()
rc = p.returncode
err = strip_python_stderr(err)
if (rc and expected_success) or (not rc and not expected_success):
raise AssertionError("Process return code is %d, "
"stderr follows:\n%s" %
(rc, err.decode('ascii', 'ignore')))
return rc, out, err
def check_close_std_fds(self, fds):
# Issue #9905: test that subprocess pipes still work properly with
# some standard fds closed
stdin = 0
newfds = []
for a in fds:
b = os.dup(a)
newfds.append(b)
if a == 0:
stdin = b
try:
for fd in fds:
os.close(fd)
out, err = subprocess.Popen([
sys.executable, "-c", 'import sys;'
'sys.stdout.write("apple");'
'sys.stdout.flush();'
'sys.stderr.write("orange")'
],
stdin=stdin,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE).communicate()
err = test_support.strip_python_stderr(err)
self.assertEqual((out, err), (b'apple', b'orange'))
finally:
for b, a in zip(newfds, fds):
os.dup2(b, a)
for b in newfds:
os.close(b)
def _assert_python(expected_success, *args, **env_vars):
cmd_line = [sys.executable]
if not env_vars:
cmd_line.append('-E')
cmd_line.extend(args)
# Need to preserve the original environment, for in-place testing of
# shared library builds.
env = os.environ.copy()
env.update(env_vars)
p = subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
env=env)
try:
out, err = p.communicate()
finally:
subprocess._cleanup()
p.stdout.close()
p.stderr.close()
rc = p.returncode
err = strip_python_stderr(err)
if (rc and expected_success) or (not rc and not expected_success):
raise AssertionError(
"Process return code is %d, "
"stderr follows:\n%s" % (rc, err.decode('ascii', 'ignore')))
return rc, out, err
def get_hash(self, repr_, seed=None):
env = os.environ.copy()
if seed is not None:
env['PYTHONHASHSEED'] = str(seed)
else:
env.pop('PYTHONHASHSEED', None)
cmd_line = [sys.executable, '-c', self.get_hash_command(repr_)]
p = subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
env=env)
out, err = p.communicate()
out = test_support.strip_python_stderr(out)
return int(out.strip())
def get_hash(self, repr_, seed=None):
env = os.environ.copy()
if seed is not None:
env['PYTHONHASHSEED'] = str(seed)
else:
env.pop('PYTHONHASHSEED', None)
cmd_line = [sys.executable, '-c', self.get_hash_command(repr_)]
p = subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
env=env)
out, err = p.communicate()
out = test_support.strip_python_stderr(out)
return int(out.strip())
def check_swap_fds(self, stdin_no, stdout_no, stderr_no):
# open up some temporary files
temps = [mkstemp() for i in range(3)]
temp_fds = [fd for fd, fname in temps]
try:
# unlink the files -- we won't need to reopen them
for fd, fname in temps:
os.unlink(fname)
# save a copy of the standard file descriptors
saved_fds = [os.dup(fd) for fd in range(3)]
try:
# duplicate the temp files over the standard fd's 0, 1, 2
for fd, temp_fd in enumerate(temp_fds):
os.dup2(temp_fd, fd)
# write some data to what will become stdin, and rewind
os.write(stdin_no, b"STDIN")
os.lseek(stdin_no, 0, 0)
# now use those files in the given order, so that subprocess
# has to rearrange them in the child
p = subprocess.Popen(
[
sys.executable,
"-c",
"import sys; got = sys.stdin.read();" 'sys.stdout.write("got %s"%got); sys.stderr.write("err")',
],
stdin=stdin_no,
stdout=stdout_no,
stderr=stderr_no,
)
p.wait()
for fd in temp_fds:
os.lseek(fd, 0, 0)
out = os.read(stdout_no, 1024)
err = test_support.strip_python_stderr(os.read(stderr_no, 1024))
finally:
for std, saved in enumerate(saved_fds):
os.dup2(saved, std)
os.close(saved)
self.assertEqual(out, b"got STDIN")
self.assertEqual(err, b"err")
finally:
for fd in temp_fds:
os.close(fd)
def check_swap_fds(self, stdin_no, stdout_no, stderr_no):
# open up some temporary files
temps = [mkstemp() for i in range(3)]
temp_fds = [fd for fd, fname in temps]
try:
# unlink the files -- we won't need to reopen them
for fd, fname in temps:
os.unlink(fname)
# save a copy of the standard file descriptors
saved_fds = [os.dup(fd) for fd in range(3)]
try:
# duplicate the temp files over the standard fd's 0, 1, 2
for fd, temp_fd in enumerate(temp_fds):
os.dup2(temp_fd, fd)
# write some data to what will become stdin, and rewind
os.write(stdin_no, b"STDIN")
os.lseek(stdin_no, 0, 0)
# now use those files in the given order, so that subprocess
# has to rearrange them in the child
p = subprocess.Popen([
sys.executable, "-c", 'import sys; got = sys.stdin.read();'
'sys.stdout.write("got %s"%got); sys.stderr.write("err")'
],
stdin=stdin_no,
stdout=stdout_no,
stderr=stderr_no)
p.wait()
for fd in temp_fds:
os.lseek(fd, 0, 0)
out = os.read(stdout_no, 1024)
err = test_support.strip_python_stderr(os.read(
stderr_no, 1024))
finally:
for std, saved in enumerate(saved_fds):
os.dup2(saved, std)
os.close(saved)
self.assertEqual(out, b"got STDIN")
self.assertEqual(err, b"err")
finally:
for fd in temp_fds:
os.close(fd)
+ self.assertEqual(len(os.urandom(10)), 10)
+ self.assertEqual(len(os.urandom(100)), 100)
+ self.assertEqual(len(os.urandom(1000)), 1000)
+
+ def test_urandom_value(self):
+ data1 = os.urandom(16)
+ data2 = os.urandom(16)
+ self.assertNotEqual(data1, data2)
+
+ def get_urandom_subprocess(self, count):
+ code = '\n'.join((
+ 'import os, sys',
+ 'data = os.urandom(%s)' % count,
+ 'sys.stdout.write(data)',
+ 'sys.stdout.flush()'))
+ cmd_line = [sys.executable, '-c', code]
+ p = subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
+ stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+ out, err = p.communicate()
+ out = test_support.strip_python_stderr(out)
+ self.assertEqual(len(out), count)
+ return out
+
+ def test_urandom_subprocess(self):
+ data1 = self.get_urandom_subprocess(16)
+ data2 = self.get_urandom_subprocess(16)
+ self.assertNotEqual(data1, data2)
class Win32ErrorTests(unittest.TestCase):
def test_rename(self):
