How to mock using Mockito and assert a thrown exception and message using Junit5?

Question

I am using Mockito along with Junit5 as well as SpringBootTest. I need to assert a thrown exception as well as its message.

Answer 1

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;


@SpringBootTest
class Sample{

   @Autowired
   TestService service;

   @Test
   void sampleTest(){
      Executable exec = ()-> service.execute();
      Throwable thrown = assertThrows(MyException.class, exec, "Type your message");        
      assertEquals("Dancing stars", thrown.getMessage());
    }
}

Please refer doc here.