server.processNextFrame() // Ping.
    client.processNextFrame() // Pong.

    // After 1000ms the client will attempt a ping 2, but we don't process it. That'll cause the
    // client to fail at 1500ms when it's time to send ping 3 because pong 2 hasn't been received.
    taskFaker.advanceUntil(ns(1000L))
    taskFaker.advanceUntil(ns(1500L))
    client.listener.assertFailure(

        when(ctx2.getCredentials()).thenReturn(creds2);
        when(ctx2.getNameServiceClient()).thenReturn(nsc2);
        when(nsc2.getAllByName(anyString(), anyBoolean())).thenThrow(new UnknownHostException("fail"));

        SmbResourceLocatorImpl l3 = new SmbResourceLocatorImpl(ctx2, smbUrl("smb://host/share/file"));
        SmbResourceLocatorImpl l4 = new SmbResourceLocatorImpl(ctx2, smbUrl("smb://HOST/share/file"));

// message) to `output_graph_def` (allocated by TF_NewBuffer()).
// `output_graph_def`'s underlying buffer will be freed when TF_DeleteBuffer()
// is called.
//
// May fail on very large graphs in the future.
TF_CAPI_EXPORT extern void TF_GraphToGraphDef(TF_Graph* graph,
                                              TF_Buffer* output_graph_def,

        // Try to write a different item with same ID
        ProtwordsItem differentItem = new ProtwordsItem(1, "differentValue");

        try {
            updater.write(differentItem);
            fail("Should throw DictionaryException");
        } catch (DictionaryException e) {
            assertTrue(e.getMessage().contains("Protwords file was updated"));
        }

        updater.close();
    }

            // When/Then - Expect NPE due to UUID.encode() limitations
            assertThrows(NullPointerException.class, () -> {
                bindWithParams.encode_in(mockBuffer);
            }, "Should fail on UUID encoding");
        }
    }

    @Nested
    @DisplayName("Decoding Tests")
    class DecodingTests {

        @Test
        @DisplayName("decode_out should read bind response data correctly")

    static final int O_RDWR = 0x03;
    static final int O_APPEND = 0x04;

    // Open Function Encoding
    // create if the file does not exist
    static final int O_CREAT = 0x0010;
    // fail if the file exists
    static final int O_EXCL = 0x0020;
    // truncate if the file exists
    static final int O_TRUNC = 0x0040;

    // share access
    /**

    /** If true, the user requested a shutdown while the service was still starting up. */
    final boolean shutdownWhenStartupFinishes;

    /**
     * The exception that caused this service to fail. This will be {@code null} unless the service
     * has failed.
     */
    final @Nullable Throwable failure;

    StateSnapshot(State internalState) {
      this(internalState, false, null);
    }

    try {
      Files.move(from, to);
      if (success) {
        assertFalse(from.exists());
        assertTrue(to.exists());
      } else {
        fail("expected exception");
      }
    } catch (IOException possiblyExpected) {
      if (success) {
        throw possiblyExpected;
      }
    }
  }

  private static class UnmovableFile extends File {

	if debugPrint {
		fmt.Printf("mux %d: got msg seqid %d, payload length: %d, err:%v\n", m.MuxID, seq, len(r.Msg), r.Err)
	}
	if !m.checkSeq(seq) {
		if debugReqs {
			fmt.Println(m.MuxID, m.parent.String(), "CHECKSEQ FAIL", m.RecvSeq, seq)
		}
		PutByteBuffer(r.Msg)
		r.Msg = nil
		r.Err = ErrIncorrectSequence
		m.addResponse(r)
		return
	}
	atomic.StoreInt64(&m.LastPong, time.Now().UnixNano())
	ok := m.addResponse(r)

    // it's shared to avoid using too much memory in tests
    double[] sharedArray = new double[arraysDim2];
    Arrays.fill(arrays, sharedArray);

    try {
      Doubles.concat(arrays);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testEnsureCapacity() {
    assertThat(Doubles.ensureCapacity(EMPTY, 0, 1)).isSameInstanceAs(EMPTY);