@Test
public void testCleanLarger() throws Exception {

  final String program =
      "#version 440\n"
          + "void main() {"
          + "  int x;"
          + "  const int y = x + 2;"
          + "  const int z = 2 + y;"
          + "}";
  final String expectedProgram =
      "#version 440\n"
          + "void main() {"
          + "  int x;"
          + "  int y = x + 2;"
          + "  int z = 2 + y;"
          + "}";
  final TranslationUnit tu = ParseHelper.parse(program);
  ConstCleaner.clean(tu);
  CompareAsts.assertEqualAsts(expectedProgram, tu);
}