import java.util.Comparator;
import java.util.List;
import junit.framework.TestCase;

/**
 * Tests for {@code TopKSelector}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
public class TopKSelectorTest extends TestCase {

  public void testNegativeK() {
    try {
      TopKSelector.<String>least(-1);
      fail();
    } catch (IllegalArgumentException expected) {
    }
    try {

 * methods that they depend on are thread-safe.
 *
 * @author Mike Bostock
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public abstract class ForwardingMapEntry<K extends @Nullable Object, V extends @Nullable Object>
    extends ForwardingObject implements Map.Entry<K, V> {
  // TODO(lowasser): identify places where thread safety is actually lost

/**
 * Test cases for a {@link Table} implementation supporting reads and writes.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public abstract class AbstractTableTest<C extends @Nullable Character>
    extends AbstractTableReadTest<C> {

  protected void populate(Table<String, Integer, C> table, @Nullable Object... data) {
    checkArgument(data.length % 3 == 0);

/**
 * Test cases for {@link Table} read operations.
 *
 * @author Jared Levy
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public abstract class AbstractTableReadTest<C extends @Nullable Character> extends TestCase {
  protected Table<String, Integer, C> table;

  /**
   * Creates a table with the specified data.
   *

/**
 * Test cases for {@link Table} read operations.
 *
 * @author Jared Levy
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public abstract class AbstractTableReadTest<C extends @Nullable Character> extends TestCase {
  protected Table<String, Integer, C> table;

  /**
   * Creates a table with the specified data.
   *

    assertEquals(String[].class, empty.getClass());
    assertThat(empty).isEmpty();
  }

  @GwtIncompatible // ObjectArrays.newArray(Class, int)
  public void testNewArray_fromClass_Nonempty() {
    String[] array = ObjectArrays.newArray(String.class, 2);
    assertEquals(String[].class, array.getClass());
    assertThat(array).hasLength(2);
    assertNull(array[0]);
  }

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for repeated node and edge addition and removal in a {@link Network}. */
@RunWith(JUnit4.class)

public final class NetworkMutationTest {
  private static final int NUM_TRIALS = 5;
  private static final int NUM_NODES = 20;
  private static final int NUM_EDGES = 100;

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Tests for {@code Comparators}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class ComparatorsTest extends TestCase {
  public void testLexicographical() {
    Comparator<String> comparator = Ordering.natural();
    Comparator<Iterable<String>> lexy = Comparators.lexicographical(comparator);

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Tests for {@code Comparators}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class ComparatorsTest extends TestCase {
  public void testLexicographical() {
    Comparator<String> comparator = Ordering.natural();
    Comparator<Iterable<String>> lexy = Comparators.lexicographical(comparator);

 *
 * @author Kevin Bourrillion
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible(serializable = true, emulated = true)
@ElementTypesAreNonnullByDefault
public final class HashMultiset<E extends @Nullable Object> extends AbstractMapBasedMultiset<E> {

  /** Creates a new, empty {@code HashMultiset} using the default initial capacity. */