def test_empty_list(self):
"""
An edge case.
Checks whether an empty list is correctly processed.
"""
l = list(scan._split([]))
self.assertEqual(l, [])
def test_empty_list(self):
"""
An edge case.
Checks whether an empty list is correctly processed.
"""
l = list(scan._split([]))
self.assertEqual(l, [])
def test_single_element(self):
"""
An edge case.
Checks whether a single element is correctly processed.
"""
l = list(scan._split(['value']))
self.assertEqual(len(l), 1)
self.assertEqual(l[0], ['value'])
def test_single_element(self):
"""
An edge case.
Checks whether a single element is correctly processed.
"""
l = list(scan._split(['value']))
self.assertEqual(len(l), 1)
self.assertEqual(l[0], ['value'])
def test_split_lengths(self):
"""
A normal use case.
Checks whether length of individual chunks does not exceed
resource limits.
"""
rng = int(self._patches['fd_res_lim'].new.return_value[0] * 5)
lim = int(scan._file_descriptor_resource_limit() *
scan._MAGIC_NUMBER_SPLIT_UPPER_THRESHOLD)
for l in scan._split(range(rng)):
self.assertLessEqual(len(l), lim)
def test_split_lengths(self):
"""
A normal use case.
Checks whether length of individual chunks does not exceed
resource limits.
"""
rng = int(self._patches['fd_res_lim'].new.return_value[0] * 5)
lim = int(scan._file_descriptor_resource_limit() *
scan._MAGIC_NUMBER_SPLIT_UPPER_THRESHOLD)
for l in scan._split(range(rng)):
self.assertLessEqual(len(l), lim)
def test_limit_exceeded(self):
"""
A rare case
Checks whether length of individual chunks is always 1
after FD limit is exceeded.
"""
lim_u = int(scan._file_descriptor_resource_limit() *
scan._MAGIC_NUMBER_SPLIT_UPPER_THRESHOLD)
lim_l = int(scan._file_descriptor_resource_limit() *
scan._MAGIC_NUMBER_SPLIT_LOWER_THRESHOLD)
rng = int(self._patches['fd_res_lim'].new.return_value[0] * lim_l)
o_fd_mock = self._patches['o_fds'].new
self.assertLess(o_fd_mock.return_value, lim_l)
for l in scan._split(range(rng)):
if o_fd_mock.return_value < lim_l:
self.assertTrue(1 < len(l) <= lim_u)
o_fd_mock.return_value += 1
else:
self.assertEqual(len(l), 1)
self.assertGreaterEqual(o_fd_mock.return_value, lim_l)
def test_limit_exceeded(self):
"""
A rare case
Checks whether length of individual chunks is always 1
after FD limit is exceeded.
"""
lim_u = int(scan._file_descriptor_resource_limit() *
scan._MAGIC_NUMBER_SPLIT_UPPER_THRESHOLD)
lim_l = int(scan._file_descriptor_resource_limit() *
scan._MAGIC_NUMBER_SPLIT_LOWER_THRESHOLD)
rng = int(self._patches['fd_res_lim'].new.return_value[0] * lim_l)
o_fd_mock = self._patches['o_fds'].new
self.assertLess(o_fd_mock.return_value, lim_l)
for l in scan._split(range(rng)):
if o_fd_mock.return_value < lim_l:
self.assertTrue(1 < len(l) <= lim_u)
o_fd_mock.return_value += 1
else:
self.assertEqual(len(l), 1)
self.assertGreaterEqual(o_fd_mock.return_value, lim_l)
