import static com.google.common.collect.Comparators.max;
import static com.google.common.collect.Comparators.min;
import static com.google.common.collect.testing.Helpers.testComparator;
import static com.google.common.truth.Truth.assertThat;
import static java.util.Arrays.asList;
import static java.util.Collections.singleton;
import static java.util.Comparator.comparing;

import static com.google.common.collect.testing.Helpers.assertEmpty;
import static com.google.common.collect.testing.Helpers.assertEqualInOrder;
import static com.google.common.collect.testing.Helpers.testComparator;
import static java.util.Arrays.asList;
import static java.util.Collections.emptyIterator;
import static java.util.Collections.singleton;

import com.google.common.annotations.GwtCompatible;

import static com.google.common.collect.testing.Helpers.assertEmpty;
import static com.google.common.collect.testing.Helpers.assertEqualInOrder;
import static com.google.common.collect.testing.Helpers.testComparator;
import static java.util.Arrays.asList;
import static java.util.Collections.emptyIterator;
import static java.util.Collections.singleton;

import com.google.common.annotations.GwtCompatible;

    assertTrue(
        SortedIterables.hasSameComparator(
            Ordering.natural().reverse(), Sets.newTreeSet(Ordering.natural().reverse())));
  }

  public void testComparator() {
    assertEquals(Ordering.natural(), SortedIterables.comparator(Sets.newTreeSet()));
  }

            new byte[] {GREATEST, GREATEST},
            new byte[] {GREATEST, GREATEST, GREATEST});

    Comparator<byte[]> comparator = SignedBytes.lexicographicalComparator();
    Helpers.testComparator(comparator, ordered);
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testLexicographicalComparatorSerializable() {

            new byte[] {GREATEST, GREATEST},
            new byte[] {GREATEST, GREATEST, GREATEST});

    Comparator<byte[]> comparator = SignedBytes.lexicographicalComparator();
    Helpers.testComparator(comparator, ordered);
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testLexicographicalComparatorSerializable() {

    TreeMultimap<@Nullable String, @Nullable Integer> multimap = createPopulate();
    assertThat(multimap.values()).containsExactly(7, 3, 1, null, 0, 6, 2).inOrder();
  }

  public void testComparator() {
    TreeMultimap<@Nullable String, @Nullable Integer> multimap = createPopulate();
    assertEquals(DECREASING_INT_COMPARATOR, multimap.get("foo").comparator());