Clean up revert.py and fixes an issue when only one file is reverted in a subdirectory.

tests/revert_unittest.py

Index: tests/revert_unittest.py
diff --git a/tests/revert_unittest.py b/tests/revert_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..3b2fd2c9293ef67bcedfa4e947f1dabab61d728f
--- /dev/null
+++ b/tests/revert_unittest.py
@@ -0,0 +1,50 @@
+#!/usr/bin/python
+# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Unit tests for revert.py."""
+
+import os
+import unittest
+
+# Local imports
+import revert
+
+
+class RevertTestsBase(unittest.TestCase):
+  """Setups and tear downs the mocks but doesn't test anything as-is."""
+  def setUp(self):
+    pass
+
+  def tearDown(self):
+    pass
+
+  def compareMembers(self, object, members):
+    """If you add a member, be sure to add the relevant test!"""
+    # Skip over members starting with '_' since they are usually not meant to
+    # be for public use.
+    actual_members = [x for x in sorted(dir(object))
+                      if not x.startswith('_')]
+    expected_members = sorted(members)
+    if actual_members != expected_members:
+      diff = ([i for i in actual_members if i not in expected_members] +
+              [i for i in expected_members if i not in actual_members])
+      print diff
+    self.assertEqual(actual_members, expected_members)
+
+
+class RevertUnittest(RevertTestsBase):
+  """General revert.py tests."""
+  def testMembersChanged(self):
+    members = [
+      'CaptureSVNLog', 'GetRepoBase', 'Main', 'ModifiedFile', 'NoBlameList',
+      'NoModifiedFile', 'OutsideOfCheckout', 'Revert', 'UniqueFast',
+      'exceptions', 'gcl', 'gclient', 'optparse', 'os', 'sys', 'xml'
+    ]
+    # If this test fails, you should add the relevant test.
+    self.compareMembers(revert, members)
+
+
+if __name__ == '__main__':
+  unittest.main()