@Test
public void verifyErrorOnInvalidLastUpdatedAtClientDate()
{

    event.setEvent( event.getUid() );
    event.setLastUpdatedAtClient( "111-12-122" );
    ImportSummary importSummary = rule.check( new ImmutableEvent( event ), workContext );
    assertHasError( importSummary, event, null );
    assertHasConflict( importSummary, event,
        "Invalid event last updated at client date: " + event.getLastUpdatedAtClient() );
}