@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class CollectionEqualsTester<E> extends AbstractCollectionTester<E> {

  // TODO(cpovirk): Consider using EqualsTester from Guava.
  @SuppressWarnings("SelfEquals")
  public void testEquals_self() {
    assertTrue("An Object should be equal to itself.", collection.equals(collection));
  }

  public void testEquals_null() {

    toBeGCed = null;
    GcFinalization.awaitClear(ref);
  }

  private static Callable<String> toStringCallable(final Object object) {
    return new Callable<String>() {
      @Override
      public String call() {
        return object.toString();
      }
    };
  }

  public void testCancellationDuringReentrancy() throws Exception {

    /**
     * JDBCドライバを登録します。
     *
     * @param driverClassName
     *            登録するJDBCドライバのクラス名。{@literal null}や空文字列であってはいけません
     */
    public static void registerDriver(final String driverClassName) {
        assertArgumentNotEmpty("driverClassName", driverClassName);

        final Class<Driver> clazz = ClassUtil.forName(driverClassName);
        registerDriver(clazz);
    }

    /**

@GwtIncompatible
@SuppressWarnings("serial") // using writeReplace instead of standard serialization
@ElementTypesAreNonnullByDefault
public final class MutableClassToInstanceMap<B extends @Nullable Object>
    extends ForwardingMap<Class<? extends @NonNull B>, B>
    implements ClassToInstanceMap<B>, Serializable {

  /**
   * Returns a new {@code MutableClassToInstanceMap} instance backed by a {@link HashMap} using the

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o targetContainer: (Required)
    #  The target DI container.
    #  Your possible choices are:
    #
    #       spring, guice, seasar, cdi, lasta_di
    #
    ; targetContainer = spring
    # - - - - - - - - - -/

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o packageBase: (Required)
    #  The base directory of package for generated class.

      client.newCall(
        Request.Builder()
          .url(server!!.url("/"))
          .build(),
      )
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")
    response.body.close()
    assertThat(listener.recordedEventTypes()).containsExactly(
      "ConnectStart",
      "ConnectEnd",
      "ConnectionAcquired",
      "ConnectionReleased",
    )

   *
   * While intuitively, using CharsetEncoder to encode the CharSequence directly to the buffer (or
   * even to an intermediate buffer) should be considerably more efficient than potentially
   * copying the CharSequence to a String and then calling getBytes(Charset) on that String, in
   * reality there are optimizations that make the getBytes(Charset) approach considerably faster,

   * the call to {@code contains(null)} is permitted to throw a {@code NullPointerException}.
   *
   * @param message message to use upon assertion failure
   */
  protected void expectNullKeyMissingWhenNullKeysUnsupported(String message) {
    try {
      assertFalse(message, getMap().containsKey(null));
    } catch (NullPointerException tolerated) {
      // Tolerated
    }
  }

  /**

  // that are considered authoritative for the behavior of that escaper.

  /**
   * Returns an {@link Escaper} instance that escapes special characters in a string so it can
   * safely be included in an XML document as element content. See section <a
   * href="http://www.w3.org/TR/2008/REC-xml-20081126/#syntax">2.4</a> of the XML specification.
   *

    }
    return false;
  }

  @Override
  public int hashCode() {
    return presentFeatures.hashCode() * 31 + absentFeatures.hashCode();
  }

  @Override
  public String toString() {
    return "{TesterRequirements: present=" + presentFeatures + ", absent=" + absentFeatures + "}";
  }

  private static final long serialVersionUID = 0;