@Test
public void createCommentRequestDoesNotExistTest() {

    thrown.expect(IllegalArgumentException.class);
    String commentStr = "This is a test comment.";
    manager.createComment(DOES_NOT_EXIST_IRI, user1, commentStr);
    verify(utilsService).optObject(eq(request1.getResource()), eq(mergeRequestFactory), any(RepositoryConnection.class));
}