[Extension API Extern Generation] Fix comment indentation

tools/json_schema_compiler/code_test.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.
 
 from code import Code
 import unittest
 
 class CodeTest(unittest.TestCase):
   def testAppend(self):
@@ skipping 99 matching lines @@
     c.Append('%(var1)s')
     self.assertRaises(KeyError, c.Substitute, {'clearlynotvar1': 'one'})
 
   def testIsEmpty(self):
     c = Code()
     self.assertTrue(c.IsEmpty())
     c.Append('asdf')
     self.assertFalse(c.IsEmpty())
 
   def testComment(self):
-    long_comment = ('This comment is eighty nine characters in longness, '
-        'that is, to use another word, length')
+    long_comment = ('This comment is ninety one characters in longness, '
+        'that is, using a different word, length.')
     c = Code()
     c.Comment(long_comment)
     self.assertEquals(
-        '// This comment is eighty nine characters '
-        'in longness, that is, to use another\n'
-        '// word, length',
+        '// This comment is ninety one characters '
+        'in longness, that is, using a different\n'
+        '// word, length.',
         c.Render())
     c = Code()
     c.Sblock('sblock')
     c.Comment(long_comment)
     c.Eblock('eblock')
     c.Comment(long_comment)
     self.assertEquals(
         'sblock\n'
-        '  // This comment is eighty nine characters '
-        'in longness, that is, to use\n'
-        '  // another word, length\n'
+        '  // This comment is ninety one characters '
+        'in longness, that is, using a\n'
+        '  // different word, length.\n'
         'eblock\n'
-        '// This comment is eighty nine characters in '
-        'longness, that is, to use another\n'
-        '// word, length',
+        '// This comment is ninety one characters in '
+        'longness, that is, using a different\n'
+        '// word, length.',
         c.Render())
     long_word = 'x' * 100
     c = Code()
     c.Comment(long_word)
     self.assertEquals(
         '// ' + 'x' * 77 + '\n'
         '// ' + 'x' * 23,
         c.Render())
+    c = Code(indent_size=2, comment_length=40)
+    c.Comment('Pretend this is a Closure Compiler style comment, which should '
+        'both wrap and indent', comment_prefix=' * ', wrap_indent=4)
+    self.assertEquals(
+        ' * Pretend this is a Closure Compiler\n'
+        ' *     style comment, which should both\n'
+        ' *     wrap and indent',
+        c.Render())
 
   def testCommentWithSpecialCharacters(self):
     c = Code()
     c.Comment('20% of 80%s')
     c.Substitute({})
     self.assertEquals('// 20% of 80%s', c.Render())
     d = Code()
     d.Append('90')
     d.Concat(c)
     self.assertEquals('90\n'
         '// 20% of 80%s',
         d.Render())
 
 if __name__ == '__main__':
   unittest.main()