def test_clear_original_file_does_not_try_to_delete_the_file(
self, get_size_mock, isfile_mock, open_, *remove_func_mocks):
log = Log('file.log')
log.clear_original_file()
# Make sure we actually have the mocks we expect since failure here would corrupt our test.
self.assertTrue(len(remove_func_mocks) > 0)
for func in remove_func_mocks:
func.assert_not_called()
def test_clear_original_file_raises_on_not_a_file(self, *args):
log = Log('file.log')
with self.assertRaises(FileNotFoundError):
log.clear_original_file()
def test__raise_if_not_a_file_raises_on_bad_directory(self, *stubs):
with self.assertRaises(FileNotFoundError):
Log._raise_if_not_a_file('./')
def test_clone_to_a_backup_with_user_defined_path(self, copy2_mock,
*stubs):
log = Log(TEST_LOG_PATH)
log.clone_to_a_backup(TEST_USER_DEFINED_CLONE_PATH)
copy2_mock.assert_called_with(TEST_LOG_PATH,
TEST_USER_DEFINED_CLONE_PATH)
def test_clone_to_a_backup_default(self, copy2_mock, *stubs):
log = Log(TEST_LOG_PATH)
log.clone_to_a_backup()
copy2_mock.assert_called_with(TEST_LOG_PATH, TEST_LOG_PATH + '.prev')
def test__count_lines_in_file_raises_if_file_does_not_exist(self, *stubs):
with self.assertRaises(FileNotFoundError):
Log._count_lines_in_file('file.log')
def test__count_lines_in_file_counts_lines(self, open_):
fix_iteration_in_mock_open(open_)
line_count = Log._count_lines_in_file(TEST_LOG_PATH)
open_.assert_called_with(TEST_LOG_PATH, 'r')
self.assertEqual(line_count, TEST_LOG_DATA_LINE_CNT)
def test_constructor_counts_lines(self, open_, *stubs):
fix_iteration_in_mock_open(open_)
log = Log(TEST_LOG_PATH)
self.assertEqual(TEST_LOG_DATA_LINE_CNT, log.get_line_count())
def test_constructor_computes_size(self, *stubs):
log = Log(TEST_LOG_PATH)
self.assertEqual(TEST_LOG_DATA_SIZE, log.get_file_size_in_bytes())
self.assertEqual(TEST_LOG_DATA_SIZE / BYTES_IN_MEGABYTE,
log.get_file_size_in_megabytes())
def test_constructor_excepts_when_path_is_not_a_file(self, *stubs):
with self.assertRaises(FileNotFoundError):
log = Log('./')
def test_constructor_excepts_on_no_file(self):
with self.assertRaises(FileNotFoundError):
log = Log(TEST_LOG_PATH)
def test__clear_file_contents_raises_and_does_not_open_file(
self, open_, *args):
with self.assertRaises(FileNotFoundError):
Log._clear_file_contents('file.log')
open_.assert_not_called()
def test__clear_file_contents_clears_file(self, open_, *args):
Log._clear_file_contents('file.log')
open_.assert_called_with('file.log', 'w')
open_().close.assert_called()
open_().write.assert_not_called()
def test_clear_original_file_clears_data(self, clear_mock, *args):
log = Log('file.log')
log.clear_original_file()
clear_mock.assert_called_with('file.log')