ExceptionRules.java

package example;

import java.util.*;
import java.io.*;

import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

import org.junit.*;
import org.junit.rules.*;

public class ExceptionRules {

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

  @Test
  public void should_throw_exception_with_particular_message () throws Exception {

    thrown.expect ( Exception.class );
    thrown.expectMessage ( "bad data" );

    Foo.someFunctionThatThrowsAnException ();
  }
}

class Foo {
  public static void someFunctionThatThrowsAnException ( ) throws Exception {
    throw new Exception ( "bad data" );
  }
}