code: @Test public void shouldBeFasterWhenRunningProcessingInParallel() throws Exception {
    final long begin=System.currentTimeMillis();
    victim.setParallelProcessing(false);
    testMojoWithConfigurableWroManagerFactoryWithValidConfigFileSet();
    final long endSerial=System.currentTimeMillis();
    victim.setParallelProcessing(true);
    testMojoWithConfigurableWroManagerFactoryWithValidConfigFileSet();
    final long endParallel=System.currentTimeMillis();
    final long serial=endSerial - begin;
    final long parallel=endParallel - endSerial;
    LOG.info("serial took: {}ms",serial);
    LOG.info("parallel took: {}ms",parallel);
    assertTrue(serial > parallel);
  }
  