【转】Jmockit 修改final静态变量

• publicstatic class ClassWithConstant {

          privatestatic final Integer ANSWER = 42;

   

          publicstatic final int getAnswer() {

              returnANSWER;

          }

      }
• 单元测试类清单
  publicclass ClassWithConstantTest {

   

   

      @Test

      publicvoid test() {

          killThreadLocal(ClassWithConstant.class.getName(),"ANSWER");

          Deencapsulation.setField(ClassWithConstant.class,43);

          assertEquals(43,newClassWithConstant().getAnswer());

      }

   

      //use reflection to remove the final modifier first

      privatevoid killThreadLocal(String klazzName, String fieldName) {

          try{

          Field field = Class.forName(klazzName).getDeclaredField(fieldName);

          field.setAccessible(true);

          Field modifiersField = Field.class.getDeclaredField("modifiers");

          modifiersField.setAccessible(true);

          intmodifiers = modifiersField.getInt(field);

          modifiers &= ~Modifier.FINAL;

          modifiersField.setInt(field, modifiers);

          field.set(null,null);

          }catch(Exception e){

   

          }

  }

  }

  作者：陈潮州