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

/**
 * Tests for the {@link HtmlEscapers} class.
 *
 * @author David Beaumont
 */
@GwtCompatible
@NullUnmarked
public class HtmlEscapersTest extends TestCase {

  public void testHtmlEscaper() throws Exception {
    assertEquals("xxx", htmlEscaper().escape("xxx"));

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

/**
 * Unit test for {@link Defaults}.
 *
 * @author Jige Yu
 */
@GwtIncompatible
@NullUnmarked
public class DefaultsTest extends TestCase {
  public void testGetDefaultValue() {
    assertEquals(false, Defaults.defaultValue(boolean.class).booleanValue());

class JSpecifyNullUnmarkedChangesTest : AbstractBinaryCompatibilityTest() {

    private val nullableAnnotationName = "org.jspecify.annotations.Nullable"
    private val nullUnmarkedAnnotationName = "org.jspecify.annotations.NullUnmarked"

    @Test
    fun `from non-null returning to null-unmarked returning is breaking`() {

        checkNotBinaryCompatibleJava(
            v1 = """
                public class Source {

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

/**
 * Tests relating to automatic cache refreshing.
 *
 * @author Charles Fry
 */
@NullUnmarked
public class CacheRefreshTest extends TestCase {
  public void testAutoRefresh() {
    FakeTicker ticker = new FakeTicker();

import com.google.common.testing.NullPointerTester;
import java.lang.ref.WeakReference;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link Interners}.
 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class InternersTest extends TestCase {

  public void testStrong_simplistic() {
    String canonical = "a";
    String not = new String("a");

import static java.util.Arrays.asList;

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

/**
 * @author Luiz-Otavio "Z" Zorzella
 */
@GwtCompatible
@NullUnmarked
public class TearDownStackTest extends TestCase {

  private final TearDownStack tearDownStack = new TearDownStack();

import java.util.Map.Entry;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test of {@link MutableClassToInstanceMap}.
 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class MutableClassToInstanceMapTest extends TestCase {
  @AndroidIncompatible // test-suite builders
  public static Test suite() {

import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/** Tests for {@link AbstractFuture} with the cancellation cause system property set */
@AndroidIncompatible // custom classloading

@NullUnmarked
public class AbstractFutureCancellationCauseTest extends TestCase {

  private ClassLoader oldClassLoader;

import static org.junit.Assert.assertThrows;

import com.google.common.collect.ImmutableSet;
import java.util.HashSet;
import java.util.Set;
import org.jspecify.annotations.NullUnmarked;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * Abstract base class for testing implementations of {@link Graph} interface. Graph instances

import java.util.List;
import java.util.concurrent.atomic.AtomicReference;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link AbstractCache}.
 *
 * @author Charles Fry
 */
@NullUnmarked
public class AbstractCacheTest extends TestCase {

  public void testGetIfPresent() {