springboot-junit-rule

ExpectedExceptionTest.java

public class ExpectedExceptionTest {

   @Rule
   public ExpectedException exp = ExpectedException.none();

   @Test
   public void test() {
      exp.expect(NullPointerException.class);
      String value = null;
      value.split("");
      fail();
   }

   @Test
   public void test2() {
      exp.expect(ArithmeticException.class);
      exp.expectMessage("/ by zero");
      int val1 = 3, val2 = 0;
      val1 = val1 / val2;
      fail();
   }
}