/*
 * Copyright 2026 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

import com.google.common.annotations.J2ktIncompatible;
import java.io.Serializable;
import org.jspecify.annotations.Nullable;

/**
 * Simple base class to verify that we handle generics correctly.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
public class BaseComparable implements Comparable<BaseComparable>, Serializable {
  private final String s;

  public BaseComparable(String s) {
    this.s = s;
  }

import com.google.common.annotations.J2ktIncompatible;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link Defaults}.
 *
 * @author Jige Yu
 */
@J2ktIncompatible
@GwtIncompatible
@NullUnmarked
public class DefaultsTest extends TestCase {
  public void testGetDefaultValue() {

 * after the garbage collector reclaims the referent. This is a simpler alternative to using a
 * {@link ReferenceQueue}.
 *
 * <p>Unlike a normal phantom reference, this reference will be cleared automatically.
 *
 * @author Bob Lee
 * @since 2.0
 */
@J2ktIncompatible
@GwtIncompatible
public abstract class FinalizablePhantomReference<T> extends PhantomReference<T>
    implements FinalizableReference {
  /**

import com.google.caliper.Param;
import java.security.MessageDigest;
import org.jspecify.annotations.NullUnmarked;

/**
 * Benchmarks for comparing instance creation of {@link MessageDigest}s.
 *
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
public class MessageDigestCreationBenchmark {

  @Param({"MD5", "SHA-1", "SHA-256", "SHA-384", "SHA-512"})
  private String algorithm;

  private MessageDigest md;

import com.google.common.annotations.J2ktIncompatible;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link Defaults}.
 *
 * @author Jige Yu
 */
@J2ktIncompatible
@GwtIncompatible
@NullUnmarked
public class DefaultsTest extends TestCase {
  public void testGetDefaultValue() {

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.AbstractCollectionTester;
import java.util.Set;
import org.junit.Ignore;

/**
 * @author George van den Driessche
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")

/**
 * Utility class for being able to seed a {@link Random} value with a passed in seed from a
 * benchmark parameter.
 *
 * <p>TODO: Remove this class once Caliper has a better way.
 *
 * @author Nicholaus Shupe
 */
@NullUnmarked
public final class SpecialRandom extends Random {
  public static SpecialRandom valueOf(String s) {
    return s.isEmpty() ? new SpecialRandom() : new SpecialRandom(parseLong(s));
  }

import java.lang.reflect.Method;
import java.lang.reflect.TypeVariable;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link TypeParameter}.
 *
 * @author Ben Yu
 */
@NullUnmarked
public class TypeParameterTest extends TestCase {

  public <T> void testCaptureTypeParameter() throws Exception {
    TypeVariable<?> variable = new TypeParameter<T>() {}.typeVariable;

import com.google.common.collect.ForwardingObject;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@link ForwardingObjectTester}.
 *
 * @author Ben Yu
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class ForwardingObjectTesterTest extends TestCase {

  public void testFailsToForward() {
    try {