import com.google.common.annotations.J2ktIncompatible;
import com.google.common.testing.EqualsTester;
import java.util.Collections;
import java.util.List;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link Range}.
 *
 * @author Kevin Bourrillion
 */

import java.util.AbstractQueue;
import java.util.Collection;
import java.util.Comparator;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.PriorityQueue;
import java.util.Queue;
import java.util.SortedSet;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import org.jspecify.annotations.NullUnmarked;

  }

  public void testEmpty_first() {
    SortedSet<String> set = of();
    assertThrows(NoSuchElementException.class, () -> set.first());
  }

  public void testEmpty_last() {
    SortedSet<String> set = of();
    assertThrows(NoSuchElementException.class, () -> set.last());
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.AbstractQueue;
import java.util.Collection;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**

import java.util.AbstractSet;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutionException;
import org.jspecify.annotations.NullUnmarked;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.RandomAccess;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.function.Predicate;
import org.jspecify.annotations.Nullable;

/**

import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Comparator;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.function.ObjIntConsumer;
import org.jspecify.annotations.Nullable;

/**
 * A multiset which maintains the ordering of its elements, according to either their natural order

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.Set;
import java.util.Spliterator;
import java.util.Spliterators;
import java.util.function.Consumer;
import org.jspecify.annotations.Nullable;

/**

  }

  public void testEmpty_first() {
    SortedSet<String> set = of();
    assertThrows(NoSuchElementException.class, () -> set.first());
  }

  public void testEmpty_last() {
    SortedSet<String> set = of();
    assertThrows(NoSuchElementException.class, () -> set.last());
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester

import com.google.errorprone.annotations.Immutable;
import com.google.errorprone.annotations.InlineMe;
import java.io.Serializable;
import java.util.Comparator;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.SortedSet;
import org.jspecify.annotations.Nullable;

/**
 * A range (or "interval") defines the <i>boundaries</i> around a contiguous span of values of some