assertFalse(Ascii.equalsIgnoreCase("[", "{"));
  }

  @GwtIncompatible // String.toUpperCase() has browser semantics
  public void testEqualsIgnoreCaseUnicodeEquivalence() {
    // Note that it's possible in future that the JDK's idea to toUpperCase() or equalsIgnoreCase()
    // may change and break assumptions in this test [*]. This is not a bug in the implementation of

    assertFalse(Ascii.equalsIgnoreCase("[", "{"));
  }

  @GwtIncompatible // String.toUpperCase() has browser semantics
  public void testEqualsIgnoreCaseUnicodeEquivalence() {
    // Note that it's possible in future that the JDK's idea to toUpperCase() or equalsIgnoreCase()
    // may change and break assumptions in this test [*]. This is not a bug in the implementation of

    assertTrue(concurrentlyMutatedList.getAllStates().contains(copyOfIterable));
  }

  private static void runConcurrentlyMutatedTest(WrapWithIterable wrap) {
    /*
     * TODO: Iterate over many array sizes and all possible operation lists,
     * performing adds and removes in different ways.
     */
    runConcurrentlyMutatedTest(elements(), ops(add(1), add(2)), wrap);

    runConcurrentlyMutatedTest(elements(), ops(add(1), nop()), wrap);

    // Registration state
    private volatile WitnessRegistrationState state;
    private volatile long lastHeartbeat;
    private volatile int heartbeatFailures;
    private int flags;

    /**
     * Enumeration of possible witness registration states.
     */
    public enum WitnessRegistrationState {
        /** Registration is in progress */
        REGISTERING,
        /** Registration is active and confirmed */
        REGISTERED,

         * the JDK against TypeVariables returned by TypeResolver. To work with all JDK versions,
         * TypeResolver must return the appropriate TypeVariable implementation in each of the three
         * possible cases:
         *
         * 1. Under Android, the built-in TypeVariable implementation interoperates with ours.
         * Therefore, we can always create our own TypeVariable.
         *

    return Arrays.copyOfRange(source, from, to, (Class<? extends T[]>) arrayOfType.getClass());
  }

  /**
   * Configures the given map maker to use weak keys, if possible; does nothing otherwise (i.e., in
   * GWT). This is sometimes acceptable, when only server-side code could generate enough volume
   * that reclamation becomes important.
   */
  @J2ktIncompatible

    testClient?.let {
      val connectionPool = it.connectionPool

      connectionPool.evictAll()
      if (connectionPool.connectionCount() > 0) {
        // Minimise test flakiness due to possible race conditions with connections closing.
        // Some number of tests will report here, but not fail due to this delay.
        println("Delaying to avoid flakes")
        Thread.sleep(500L)

 * number.
 *
 * <p>Users of these utilities must be <i>extremely careful</i> not to mix up signed and unsigned
 * {@code int} values. When possible, it is recommended that the {@link UnsignedInteger} wrapper
 * class be used, at a small efficiency penalty, to enforce the distinction in the type system.
 *
 * <p>See the Guava User Guide article on <a

        # o typeMappingMap: (NotRequired - Default map:{NUMERIC=$$AutoMapping$$ ; DECIMAL=$$AutoMapping$$})
        #  If you want to change mappings from default mappings, you can specify your original mappings.
        #  But it is possible that unanticipated problems occurs, so be careful!
        #; typeMappingMap = map:{
        #    # AutoMapping for Numeric and Decimal, (1-9,0): INTEGER, (10-18,0): BIGINT, else: NUMERIC

import java.util.concurrent.atomic.AtomicBoolean;
import org.jspecify.annotations.Nullable;

/**
 * Utilities necessary for working with libraries that supply plain {@link Future} instances. Note
 * that, whenever possible, it is strongly preferred to modify those libraries to return {@code
 * ListenableFuture} directly.
 *
 * <p>For interoperability between {@code ListenableFuture} and <b>{@code CompletableFuture}</b>,