NoopELEngine implements ELEngine { @Override public String resolve(String expression) { return expression; }  @Override void setVariable(String key, T value); @Override void setVariable(String key, T value, Class<? extends T> type); @Override void setFunction(String prefix, Method method); @Override void setFunction(String prefix, String name, Method method); @Override String resolve(String expression);  }
@Test public void canResolve() { ELEngine elEngine = new NoopELEngine(); assertEquals("same", elEngine.resolve("same")); }