def test_fileno(self, mock_splice):
"""Test handling of file-descriptors"""
splice(1, None, 2, None, 3, 0)
self.assertEqual(mock_splice.call_args, ((1, None, 2, None, 3, 0), {}))
mock_splice.reset_mock()
with open("/dev/zero", "r") as fd:
splice(fd, None, fd, None, 3, 0)
self.assertEqual(mock_splice.call_args, ((fd.fileno(), None, fd.fileno(), None, 3, 0), {}))
def test_flags_list(self, mock_splice):
"""Test handling of flag lists"""
splice(1, None, 2, None, 3, [splice.SPLICE_F_MOVE, splice.SPLICE_F_NONBLOCK])
flags = splice.SPLICE_F_MOVE | splice.SPLICE_F_NONBLOCK
self.assertEqual(mock_splice.call_args, ((1, None, 2, None, 3, flags), {}))
mock_splice.reset_mock()
splice(1, None, 2, None, 3, [])
self.assertEqual(mock_splice.call_args, ((1, None, 2, None, 3, 0), {}))
def test_fileno(self, mock_splice):
'''Test handling of file-descriptors'''
splice(1, None, 2, None, 3, 0)
self.assertEqual(mock_splice.call_args, ((1, None, 2, None, 3, 0), {}))
mock_splice.reset_mock()
with open('/dev/zero', 'r') as fd:
splice(fd, None, fd, None, 3, 0)
self.assertEqual(
mock_splice.call_args,
((fd.fileno(), None, fd.fileno(), None, 3, 0), {}))
def test_flags_list(self, mock_splice):
'''Test handling of flag lists'''
splice(1, None, 2, None, 3,
[splice.SPLICE_F_MOVE, splice.SPLICE_F_NONBLOCK])
flags = splice.SPLICE_F_MOVE | splice.SPLICE_F_NONBLOCK
self.assertEqual(mock_splice.call_args,
((1, None, 2, None, 3, flags), {}))
mock_splice.reset_mock()
splice(1, None, 2, None, 3, [])
self.assertEqual(mock_splice.call_args, ((1, None, 2, None, 3, 0), {}))
def test_errno(self):
'''Test handling of failures'''
# Invoke EBADF by using a read-only FD as fd_out
with open('/dev/null', 'r') as fd:
err = errno.EBADF
msg = r'\[Errno %d\] splice: %s' % (err, os.strerror(err))
try:
splice(fd, None, fd, None, 3, 0)
except IOError as e:
self.assertTrue(re.match(msg, str(e)))
else:
self.fail('Expected IOError was not raised')
self.assertEqual(ctypes.get_errno(), 0)
def test_errno(self):
"""Test handling of failures"""
# Invoke EBADF by using a read-only FD as fd_out
with open("/dev/null", "r") as fd:
err = errno.EBADF
msg = r"\[Errno %d\] splice: %s" % (err, os.strerror(err))
try:
splice(fd, None, fd, None, 3, 0)
except IOError as e:
self.assertTrue(re.match(msg, str(e)))
else:
self.fail("Expected IOError was not raised")
self.assertEqual(ctypes.get_errno(), 0)
def test_splice_pipe_to_file(self):
'''Test `splice` from a pipe to a file'''
with tempfile.NamedTemporaryFile(bufsize=0) as fd, pipe() as (pa, pb):
os.write(pb, 'abcdef')
res = splice(pa, None, fd, None, 3, 0)
self.assertEqual(res, (3, None, None))
self.assertEqual(fd.tell(), 3)
fd.seek(0, os.SEEK_SET)
res = splice(pa, None, fd, 3, 3, 0)
self.assertEqual(res, (3, None, 6))
self.assertEqual(fd.tell(), 0)
self.assertEqual(fd.read(6), 'abcdef')
def test_splice_pipe_to_file(self):
'''Test `splice` from a pipe to a file'''
with NamedTemporaryFile() as fd:
with pipe() as (pa, pb):
os.write(pb, b'abcdef')
res = splice(pa, None, fd, None, 3, 0)
self.assertEqual(res, (3, None, None))
self.assertEqual(fd.tell(), 3)
fd.seek(0, os.SEEK_SET)
res = splice(pa, None, fd, 3, 3, 0)
self.assertEqual(res, (3, None, 6))
self.assertEqual(fd.tell(), 0)
self.assertEqual(fd.read(6), b'abcdef')
def test_splice_file_to_pipe(self):
'''Test `splice` from a file to a pipe'''
with tempfile.NamedTemporaryFile(bufsize=0) as fd, pipe() as (pa, pb):
fd.write('abcdef')
fd.seek(0, os.SEEK_SET)
res = splice(fd, None, pb, None, 3, 0)
self.assertEqual(res, (3, None, None))
# `fd.tell()` isn't updated...
self.assertEqual(os.lseek(fd.fileno(), 0, os.SEEK_CUR), 3)
fd.seek(0, os.SEEK_SET)
res = splice(fd, 3, pb, None, 3, 0)
self.assertEqual(res, (3, 6, None))
self.assertEqual(os.lseek(fd.fileno(), 0, os.SEEK_CUR), 0)
self.assertEquals(os.read(pa, 6), 'abcdef')
def test_splice_pipe_to_pipe(self):
'''Test `splice` from a pipe to a pipe'''
with pipe() as (p1a, p1b), pipe() as (p2a, p2b):
os.write(p1b, 'abcdef')
res = splice(p1a, None, p2b, None, 3, 0)
self.assertEqual(res, (3, None, None))
self.assertEqual(os.read(p2a, 3), 'abc')
self.assertEqual(os.read(p1a, 3), 'def')
def test_splice_pipe_to_pipe(self):
'''Test `splice` from a pipe to a pipe'''
with pipe() as (p1a, p1b):
with pipe() as (p2a, p2b):
os.write(p1b, b'abcdef')
res = splice(p1a, None, p2b, None, 3, 0)
self.assertEqual(res, (3, None, None))
self.assertEqual(os.read(p2a, 3), b'abc')
self.assertEqual(os.read(p1a, 3), b'def')
def test_splice_file_to_pipe(self):
'''Test `splice` from a file to a pipe'''
with NamedTemporaryFile() as fd:
with pipe() as (pa, pb):
fd.write(b'abcdef')
fd.seek(0, os.SEEK_SET)
res = splice(fd, None, pb, None, 3, 0)
self.assertEqual(res, (3, None, None))
# `fd.tell()` isn't updated...
self.assertEqual(os.lseek(fd.fileno(), 0, os.SEEK_CUR), 3)
fd.seek(0, os.SEEK_SET)
res = splice(fd, 3, pb, None, 3, 0)
self.assertEqual(res, (3, 6, None))
self.assertEqual(os.lseek(fd.fileno(), 0, os.SEEK_CUR), 0)
self.assertEqual(os.read(pa, 6), b'abcdef')
def test_splice_pipe_to_pipe(self):
"""Test `splice` from a pipe to a pipe"""
with pipe() as (p1a, p1b):
with pipe() as (p2a, p2b):
os.write(p1b, "abcdef")
res = splice(p1a, None, p2b, None, 3, 0)
self.assertEqual(res, (3, None, None))
self.assertEqual(os.read(p2a, 3), "abc")
self.assertEqual(os.read(p1a, 3), "def")