allow spaces on the per-file directives in OWNERS files

tests/owners_unittest.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 owners.py."""
 
 import os
 import sys
 import unittest
@@ skipping 136 matching lines @@
                                     [])
 
     # tom is allowed to approve ugly.cc, but not froboz.h
     self.assert_dirs_not_covered_by(['content/baz/ugly.cc'],
                                     [tom],
                                     [])
     self.assert_dirs_not_covered_by(['content/baz/froboz.h'],
                                     [tom],
                                     ['content/baz'])
 
+  def test_per_file_with_spaces(self):
+    # This is the same as test_per_file(), except that we include spaces
+    # on the per-file line. brett isn't allowed to approve ugly.cc;
+    # tom is allowed to approve ugly.cc, but not froboz.h
+    self.files['/content/baz/OWNERS'] = owners_file(brett,
+        lines=['per-file ugly.* = tom@example.com'])
+    self.assert_dirs_not_covered_by(['content/baz/ugly.cc'],
+                                    [brett],
+                                    [])
+
+    self.assert_dirs_not_covered_by(['content/baz/ugly.cc'],
+                                    [tom],
+                                    [])
+    self.assert_dirs_not_covered_by(['content/baz/froboz.h'],
+                                    [tom],
+                                    ['content/baz'])
+
   def test_per_file__set_noparent(self):
     self.files['/content/baz/OWNERS'] = owners_file(brett,
         lines=['per-file ugly.*=tom@example.com',
                'per-file ugly.*=set noparent'])
 
     # brett isn't allowed to approve ugly.cc
     self.assert_dirs_not_covered_by(['content/baz/ugly.cc'],
                                     [brett],
                                     ['content/baz/ugly.cc'])
 
@@ skipping 87 matching lines @@
 
   def test_syntax_error__unknown_set(self):
     self.assert_syntax_error('set myfatherisbillgates\n')
 
   def test_syntax_error__bad_email(self):
     self.assert_syntax_error('ben\n')
 
 
 if __name__ == '__main__':
   unittest.main()