java代码覆盖率遗漏了关于测试异常的说明

Question

   @Test
   public void testNullPointerException() {
      thrown = false;
      IntList list = null;
      IntList sublist = new IntList(null);
      IntList newList = new IntList(2, 2, 4);
      try {
         actual = OrderedIntListUtility.replaceAll(list, sublist, newList);
      } catch(NullPointerException e) {
         thrown = true;
      }
   }

Java代码覆盖率表明我在这个特定测试中遗漏了一些指令。我不知道这里遗漏的说明在哪里。请帮忙。谢谢

Answer 1

来自eclemma文档http://www.eclemma.org/jacoco/trunk/doc/counters.html

Instructions (C0 Coverage) - The smallest unit JaCoCo counts are single Java byte code instructions. Instruction coverage   
provides information about the amount of code that has been executed or missed. This metric is 
completely independent from source formatting and always available, even in absence of debug 
information in the class files.