private Target nonEmptyProperSubset;
  private Target sameElements;
  private Target partialOverlap;
  private Target containsDuplicates;
  private Target nullSingleton;

  @Override
  public void setUp() throws Exception {
    super.setUp();

    empty = new Target(emptyCollection(), "empty");
    /*
     * We test that nullSingleton.retainAll(disjointList) does NOT throw a

import org.codelibs.fess.entity.GeoInfo;
import org.codelibs.fess.entity.QueryContext;
import org.codelibs.fess.entity.SearchRequestParams.SearchRequestType;
import org.codelibs.fess.exception.InvalidQueryException;
import org.codelibs.fess.exception.QueryParseException;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.query.QueryFieldConfig;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.exception.GsaConfigException;
import org.codelibs.fess.opensearch.config.exentity.FileConfig;
import org.codelibs.fess.opensearch.config.exentity.LabelType;
import org.codelibs.fess.opensearch.config.exentity.WebConfig;

import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.coption.CursorSelectOption;
import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.exception.FetchingOverSafetySizeException;
import org.dbflute.exception.IllegalBehaviorStateException;
import org.dbflute.util.DfTypeUtil;
import org.opensearch.action.DocWriteResponse.Result;
import org.opensearch.action.admin.indices.refresh.RefreshResponse;

  }

  private void moveHelper(boolean success, File from, File to) throws IOException {
    try {
      Files.move(from, to);
      if (success) {
        assertFalse(from.exists());
        assertTrue(to.exists());
      } else {
        fail("expected exception");
      }
    } catch (IOException possiblyExpected) {
      if (success) {
        throw possiblyExpected;
      }
    }

      case TERMINATED:
      case FAILED:
        throw new AssertionError();
    }
  }

  private void enqueueFailedEvent(State from, Throwable cause) {
    // can't memoize this one due to the exception
    listeners.enqueue(
        new ListenerCallQueue.Event<Listener>() {
          @Override
          public void call(Listener listener) {
            listener.failed(from, cause);
          }

import java.util.Iterator;
import java.util.Locale;
import java.util.NoSuchElementException;

import org.codelibs.core.collection.MultiIterator;
import org.codelibs.core.exception.ClUnsupportedOperationException;
import org.codelibs.core.exception.ParseRuntimeException;
import org.codelibs.core.misc.LocaleUtil;

/**
 * Utility for converting time-representing objects to {@link Date}, {@link Calendar}, or {@link Time}.
 * <p>

import java.util.Iterator;
import java.util.Locale;
import java.util.NoSuchElementException;

import org.codelibs.core.collection.MultiIterator;
import org.codelibs.core.exception.ClUnsupportedOperationException;
import org.codelibs.core.exception.ParseRuntimeException;
import org.codelibs.core.misc.LocaleUtil;

/**
 * Utility for converting objects representing date and time to {@link Date}, {@link Calendar}, and {@link Timestamp}.

    extends AbstractMapTester<K, V> {
  private List<Entry<K, V>> containsNullKey;
  private List<Entry<K, V>> containsNullValue;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    containsNullKey = singletonList(entry(null, v3()));
    containsNullValue = singletonList(entry(k3(), null));
  }

  @MapFeature.Require(SUPPORTS_PUT)

    assertExpectedLines(source.readLines());
  }

  public void testIsEmpty() throws IOException {
    assertEquals(expected.isEmpty(), source.isEmpty());
  }

  public void testLength() throws IOException {
    assertEquals(expected.length(), source.length());
  }

  public void testLengthIfKnown() throws IOException {