TreeMap<Integer, Integer> map = Maps.newTreeMap(SOME_COMPARATOR);
    assertEquals(emptyMap(), map);
    assertSame(SOME_COMPARATOR, map.comparator());
  }

  public void testTreeMapWithInitialMap() {
    SortedMap<Integer, Integer> map = Maps.newTreeMap();
    map.put(5, 10);
    map.put(3, 20);
    map.put(1, 30);
    TreeMap<Integer, Integer> copy = Maps.newTreeMap(map);
    assertEquals(copy, map);

    assertThat(map.concurrencyLevel).isEqualTo(4);

    // concurrency level
    assertThat(map.segments).hasLength(4);
    // initial capacity / concurrency level
    assertThat(map.segments[0].table.length()).isEqualTo(16 / map.segments.length);

    assertThat(map.evictsBySize()).isFalse();
    assertThat(map.expires()).isFalse();
    assertThat(map.expiresAfterWrite()).isFalse();

import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Map.Entry;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;
import org.junit.Ignore;

/**
 * Base class for map testers.
 *
 * <p>TODO: see how much of this is actually needed once Map testers are written. (It was cloned
 * from AbstractCollectionTester.)
 *

   * putAll()}.
   *
   * @return a map view from each row key to a secondary map from column keys to values
   */
  Map<R, Map<C, V>> rowMap();

  /**
   * Returns a view that associates each column key with the corresponding map from row keys to
   * values. Changes to the returned map will update this table. The returned map does not support

    assertThat(map.concurrencyLevel).isEqualTo(4);

    // concurrency level
    assertThat(map.segments).hasLength(4);
    // initial capacity / concurrency level
    assertThat(map.segments[0].table.length()).isEqualTo(16 / map.segments.length);

    assertThat(map.evictsBySize()).isFalse();
    assertThat(map.expires()).isFalse();
    assertThat(map.expiresAfterWrite()).isFalse();

     * Returns {@literal true} if the given {@link Map} is {@literal null} or empty.
     *
     * @param map the map
     * @return {@literal true} if the map is {@literal null} or empty
     */
    public static boolean isEmpty(final Map<?, ?> map) {
        return map == null || map.isEmpty();
    }

    /**
     * Returns {@literal true} if the given {@link Map} is not {@literal null} and not empty.
     *

        /**
         * @param param
         * @return 戻り値
         */
        @SuppressWarnings("rawtypes")
        Map rawMap(Map param);

        /**
         * @param param
         * @return 戻り値
         */
        Map<String, Class<?>> genericMap(Map<Integer, String> param);

    }

 */
public class MemoryDataHelper {
    /** Map of session IDs to URL queues for managing crawling queues. */
    protected volatile Map<String, Queue<UrlQueueImpl<Long>>> urlQueueMap = new HashMap<>();

    /** Map of session IDs to access result maps for storing crawling results. */
    protected volatile Map<String, Map<String, AccessResultImpl<Long>>> sessionMap = new HashMap<>();

                  @Override
                  protected Map<String, String> create(Entry<String, String>[] entries) {
                    Map<String, String> map = new HashMap<>();
                    putEntries(map, entries);
                    map.putAll(ENTRIES_TO_FILTER);
                    map = Maps.filterEntries(map, FILTER_ENTRIES_1);
                    return Maps.filterEntries(map, FILTER_ENTRIES_2);
                  }

        Map<EventType, Long> stats = logger.getStatistics();
        assertEquals(Long.valueOf(1), stats.get(EventType.AUTHENTICATION_FAILURE), "Should have 1 authentication failure event");
    }

    @Test
    @DisplayName("Test log file access")
    void testLogFileAccess() {
        logger.logFileAccess("READ", "/path/to/file.txt", true, "testuser");

        Map<EventType, Long> stats = logger.getStatistics();