[Extension API Extern Generation] Fix comment indentation

tools/json_schema_compiler/code_test.py

Index: tools/json_schema_compiler/code_test.py
diff --git a/tools/json_schema_compiler/code_test.py b/tools/json_schema_compiler/code_test.py
index ca3652420f9018e391e2eca1f1b0f0ec9f6f13b4..fd55ad21bde04cb373ceed7ff7963a2662409f8b 100755
--- a/tools/json_schema_compiler/code_test.py
+++ b/tools/json_schema_compiler/code_test.py
@@ -148,6 +148,14 @@ class CodeTest(unittest.TestCase):
         '// ' + '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()