@Test
public void loadNetworks() throws InterruptedException, ExecutionException, IOException {

    List<Boolean> isLoadPresent = new ArrayList<>();
    Importers.loadNetworks(fileSystem.getPath(WORK_DIR), false, loader, computationManager, importConfigMock, n -> isLoadPresent.add(n.getLoad("LOAD") != null), null);
    assertEquals(2, isLoadPresent.size());
    isLoadPresent.forEach(Assert::assertTrue);
}