testers.add(SetEqualsTester.class);
    testers.add(SetRemoveTester.class);
    // SetRemoveAllTester doesn't exist because, Sets not permitting
    // duplicate elements, there are no tests for Set.removeAll() that aren't
    // covered by CollectionRemoveAllTester.
    return testers;
  }

  @Override
  protected List<TestSuite> createDerivedSuites(

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

/**
 * Unit test for {@link FinalizableReferenceQueue}.
 *
 * @author Bob Lee
 */
// - depends on details of GC and classloading
// - .class files aren't available
// - possibly no real concept of separate ClassLoaders?
@AndroidIncompatible
@GwtIncompatible
public class FinalizableReferenceQueueTest extends TestCase {

  private @Nullable FinalizableReferenceQueue frq;

    String s = "\0\n\t\\az09~\uD800\uDC00\uFFFF";
    assertEquals("null escaper should have no effect", s, escaper.escape(s));
  }

  public void testBuilderInitialStateNoReplacement() {
    // Unsafe characters aren't modified by default (unsafeReplacement == null).
    Escaper escaper = Escapers.builder().setSafeRange('a', 'z').build();
    assertEquals("The Quick Brown Fox", escaper.escape("The Quick Brown Fox"));
  }

    } finally {
      Thread.currentThread().setContextClassLoader(oldContextLoader);
    }
  }

  @AndroidIncompatible // .class files aren't available
  public void testNulls() {
    new NullPointerTester()
        .setDefault(URL.class, classfile(ResourcesTest.class))
        .testAllPublicStaticMethods(Resources.class);
  }

    Method[] methods = getMostConcreteMethods(interfaceType);
    AccessibleObject.setAccessible(methods, true);
    for (Method method : methods) {
      // Under java 8, interfaces can have default methods that aren't abstract.
      // No need to verify them.
      // Can't check isDefault() for JDK 7 compatibility.
      if (!Modifier.isAbstract(method.getModifiers())) {
        continue;
      }

    Method[] methods = getMostConcreteMethods(interfaceType);
    AccessibleObject.setAccessible(methods, true);
    for (Method method : methods) {
      // Under java 8, interfaces can have default methods that aren't abstract.
      // No need to verify them.
      // Can't check isDefault() for JDK 7 compatibility.
      if (!Modifier.isAbstract(method.getModifiers())) {
        continue;
      }

    return buffer.capacity() - buffer.limit();
  }

  /**
   * Flips the buffer output buffer so we can start reading bytes from it. If we are starting to
   * drain because there was overflow, and there aren't actually any characters to drain, then the
   * overflow must be due to a small output buffer.
   */
  private void startDraining(boolean overflow) {
    Java8Compatibility.flip(byteBuffer);

        return;
      }

      /*
       * Almost everything in GWT is an AbstractFuture (which is as good as TrustedFuture under
       * GWT). But ImmediateFuture and UncheckedThrowingFuture aren't, so we still need this case.
       */
      try {
        forceSet(getDone(delegate));
      } catch (ExecutionException exception) {
        forceSetException(exception.getCause());

  public long evictionCount() {
    return evictionCount;
  }

  /**
   * Returns a new {@code CacheStats} representing the difference between this {@code CacheStats}
   * and {@code other}. Negative values, which aren't supported by {@code CacheStats} will be
   * rounded up to zero.
   */
  public CacheStats minus(CacheStats other) {
    return new CacheStats(
        Math.max(0, saturatedSubtract(hitCount, other.hitCount)),

  public long evictionCount() {
    return evictionCount;
  }

  /**
   * Returns a new {@code CacheStats} representing the difference between this {@code CacheStats}
   * and {@code other}. Negative values, which aren't supported by {@code CacheStats} will be
   * rounded up to zero.
   */
  public CacheStats minus(CacheStats other) {
    return new CacheStats(
        Math.max(0, saturatedSubtract(hitCount, other.hitCount)),