@Test
public void testNotInjected() throws Exception {

  final String program = "void foo(int x) { switch(x) { case 0: default: break; } }";
  final TranslationUnit tu = ParseHelper.parse(program);
  List<UnswitchifyReductionOpportunity> ops = UnswitchifyReductionOpportunities
          .findOpportunities(MakeShaderJobFromFragmentShader.make(tu),
            new ReducerContext(false,
            ShadingLanguageVersion.GLSL_130,
                  new RandomWrapper(0),
                  new IdGenerator()));
  assertEquals(0, ops.size());
}