您可以将
@Rule注释与一起使用
ExpectedException，如下所示：
@Rulepublic ExpectedException expectedEx = ExpectedException.none();@Testpublic void shouldThrowRuntimeExceptionWhenEmployeeIDisNull() throws Exception { expectedEx.expect(RuntimeException.class); expectedEx.expectMessage("Employee ID is null"); // do something that should throw the exception... System.out.println("=======Starting Exception process======="); throw new NullPointerException("Employee ID is null");}请注意，
ExpectedException文档中的示例（当前）是错误的-
没有公共构造函数，因此您必须使用
ExpectedException.none()。
