@Test
public void t1()
{

    WorkContext ctx = WorkContext.builder()
        .importOptions( ImportOptions.getDefaultImportOptions() )
        .build();
    Event event = new Event();
    event.setDataValues( Sets.newHashSet( new DataValue( "aaa", "one" ), new DataValue( "bbb", "two" ) ) );
    preProcessor.process( event, ctx );
    assertThat( event.getStoredBy(), is( FALLBACK_USERNAME ) );
    assertThat( event.getDataValues(),
        hasItems( allOf( Matchers.hasProperty( "storedBy", is( FALLBACK_USERNAME ) ) ) ) );
}