java - JUnit 4 没有捕获抛出的异常

Question

出于某种原因；尽管我在验证中编码正确，但即使抛出异常，JUnit 4 仍然会引发失败:

代码:

 try {
          if (firstname == null) {
            throw new IllegalArgumentException("First name cannot be null");
          }catch (IllegalArgumentException e) {
      e.getMessage();
      e.printStackTrace();
    }

JUnit:

 @Test(expected=IllegalArgumentException.class)
 public void testUserInvalidConstructions() {
   User user = new User(null);
 }

Answer 1

刚刚意识到捕获异常会覆盖抛出 没关系