Update checked in version of gsutil to version 4.6

gslib/tests/test_file_part.py

+# -*- coding: utf-8 -*-
 # Copyright 2013 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+"""Unit tests for FilePart class."""
 
-import gslib.tests.testcase as testcase
+from __future__ import absolute_import
+
 import os
 
 from gslib.file_part import FilePart
+import gslib.tests.testcase as testcase
 
+
+# pylint: disable=protected-access
 class TestFilePart(testcase.GsUtilUnitTestCase):
-  """Unit tests for file_part.py"""
+  """Unit tests for FilePart class."""
 
   def test_tell(self):
     filename = 'test_tell'
     contents = 100 * 'x'
     fpath = self.CreateTempFile(file_name=filename, contents=contents)
     part_length = 23
     start_pos = 50
     fp = FilePart(fpath, start_pos, part_length)
     self.assertEqual(start_pos, fp._fp.tell())
     self.assertEqual(0, fp.tell())
 
   def test_seek(self):
+    """Tests seeking in a FilePart."""
     filename = 'test_seek'
     contents = 100 * 'x'
     part_length = 23
     start_pos = 50
     fpath = self.CreateTempFile(file_name=filename, contents=contents)
     fp = FilePart(fpath, start_pos, part_length)
     offset = 10
 
     # Absolute positioning.
     fp.seek(offset)
     self.assertEqual(start_pos + offset, fp._fp.tell())
     self.assertEqual(offset, fp.tell())
 
     # Relative positioning.
     fp.seek(offset, whence=os.SEEK_CUR)
     self.assertEqual(start_pos + 2 * offset, fp._fp.tell())
     self.assertEqual(2 * offset, fp.tell())
 
     # Absolute positioning from EOF.
     fp.seek(-offset, whence=os.SEEK_END)
     self.assertEqual(start_pos + part_length - offset, fp._fp.tell())
     self.assertEqual(part_length - offset, fp.tell())
 
     # Seek past EOF.
     fp.seek(1, whence=os.SEEK_END)
     self.assertEqual(start_pos + part_length + 1, fp._fp.tell())
     self.assertEqual(part_length + 1, fp.tell())
 
   def test_read(self):
+    """Tests various reaad operations with FilePart."""
     filename = 'test_read'
-    contents = ""
+    contents = ''
     for i in range(1, 256):
       contents += str(i)
     part_length = 23
     start_pos = 50
     fpath = self.CreateTempFile(file_name=filename, contents=contents)
 
     # Read in the whole file.
     fp = FilePart(fpath, start_pos, part_length)
     whole_file = fp.read()
     self.assertEqual(contents[start_pos:(start_pos + part_length)], whole_file)
@@ skipping 14 matching lines @@
     self.assertEqual(
         contents[start_pos:(start_pos + part_length)],
         partial_file + remaining_file)
 
     # Try to read after reaching EOF.
     empty_file = fp.read(100)
     self.assertEqual('', empty_file)
 
     empty_file = fp.read()
     self.assertEqual('', empty_file)