public class Deferred<RESPONSE extends Response> {
    /**
     * Constructs a new Deferred object.
     */
    public Deferred() {
        // nothing
    }

    private RESPONSE response = null;

    private Throwable error = null;

    private final Promise promise = new Promise();

    private final Queue<Consumer<RESPONSE>> doneCallbacks = new LinkedBlockingQueue<>();

    /**
     * Tests the append method of the DfsReferral class.
     * It verifies that a new DfsReferral object can be successfully appended to an existing one,
     * forming a linked list structure.
     */
    @Test
    void testAppend() {
        // Given
        DfsReferral initialReferral = new DfsReferral();
        DfsReferral appendedReferral = new DfsReferral();

        // When
        initialReferral.append(appendedReferral);

            model = new MavenStaxReader().read(is);
        }
    }

    @Test
    void testV4Model() {
        assertEquals("4.0.0", new MavenModelVersion().getModelVersion(model));
    }

    @Test
    void testV4ModelVersion() {
        Model m = model.withModelVersion("4.1.0");
        assertEquals("4.0.0", new MavenModelVersion().getModelVersion(m));
    }

    @Test

        final File targetDir = new File(userDir, "target");
        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {
            buf.append(cpSeparator);
            buf.append(targetClassesDir.getAbsolutePath());
        }
        // WEB-INF/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/lib")),

    private final AtomicLong connectionsCreated = new AtomicLong();
    private final AtomicLong connectionsActive = new AtomicLong();
    private final AtomicLong memoryRegionsAllocated = new AtomicLong();
    private final AtomicLong memoryRegionsActive = new AtomicLong();

    // Timing statistics (in nanoseconds)
    private final AtomicLong totalReadTime = new AtomicLong();

  @AndroidIncompatible // depends on details of GC
  public void testFreesNextReference() {
    Iterator<Object> itr =
        new AbstractIterator<Object>() {
          @Override
          public Object computeNext() {
            return new Object();
          }
        };
    WeakReference<Object> ref = new WeakReference<>(itr.next());
    GcFinalization.awaitClear(ref);
  }

        if (keyLength == 16) {
            // AES-128 CCM
            cipher = new CCMBlockCipher(new AESEngine());
        } else if (keyLength == 32) {
            // AES-256 CCM - Bouncy Castle supports AES-256 with same AESEngine
            cipher = new CCMBlockCipher(new AESEngine());
        } else {
            throw new IllegalArgumentException("Unsupported key length for CCM: " + keyLength);
        }

        CrawlingInfoParamCQ cq = new CrawlingInfoParamCQ();
        if (queryLambda != null) {
            queryLambda.callback(cq);
        }
        FilterAggregationBuilder builder = regFilterA(name, cq.getQuery());
        if (opLambda != null) {
            opLambda.callback(builder);
        }
        if (aggsLambda != null) {
            CrawlingInfoParamCA ca = new CrawlingInfoParamCA();

    TestService service = new TestService();
    assertEquals(0, service.startUpCalled);
    service.startAsync().awaitRunning();
    assertEquals(1, service.startUpCalled);
    assertEquals(Service.State.RUNNING, service.state());
    assertThat(service.transitionStates).containsExactly(Service.State.STARTING);
  }

  public void testStart_failed() {
    Exception exception = new Exception("deliberate");

        FileBasicInfo original =
                new FileBasicInfo(TEST_CREATE_TIME, TEST_LAST_ACCESS_TIME, TEST_LAST_WRITE_TIME, TEST_CHANGE_TIME, TEST_ATTRIBUTES);

        // Encode to buffer
        byte[] buffer = new byte[50];
        int encodedBytes = original.encode(buffer, 0);

        // Decode to new instance (decode reads 36 bytes, encode writes 40)
        FileBasicInfo decoded = new FileBasicInfo();