throw new SmbEndOfFileException();
        });
        assertEquals("Unexpectedly reached end of file", thrown.getMessage());
    }

    /**
     * toString should include both the class name and the default message.
     */
    @ParameterizedTest
    @ValueSource(strings = { "SmbEndOfFileException", "Unexpectedly reached end of file" })
    void toStringContainsKeyInfo(String expectedSubstring) {
        // Arrange

     *
     */
    private static final long serialVersionUID = 298752101881244000L;

    /**
     * Constructs an end-of-file exception.
     */
    public SmbEndOfFileException() {
        super("Unexpectedly reached end of file");
    }

import java.util.Iterator;
import java.util.Set;

/**
 * A {@link Set} implementation that stores its elements in a {@link LruHashMap}.
 * <p>
 * This set has a fixed maximum capacity. When the capacity is reached and a new element is added,
 * the least recently used element is removed.
 * </p>
 * @author shinsuke
 * @param <E> the type of elements maintained by this set
 */

        if (buf == null || buf.length != SmbComTransaction.TRANSACTION_BUF_SIZE) {
            return; // Silently ignore invalid buffers
        }

        // Only cache if we haven't reached the limit - O(1) check
        if (queueSize.get() < MAX_BUFFERS) {
            if (bufferQueue.offer(buf)) { // O(1) operation
                queueSize.incrementAndGet();
            }
        }

 * It maintains a list of ReadingConverter instances and iterates through them, applying each converter to the input text and accumulating the results.
 * The chain stops processing when the maximum number of readings is reached.
 */
public class ReadingConverterChain implements ReadingConverter {
    /**
     * Constructs a new {@link ReadingConverterChain}.
     */
    public ReadingConverterChain() {
        // nothing
    }

     *
     * @param reader
     *            the {@link BufferedReader} (must not be {@literal null})
     * @return a line of text, or {@literal null} if the end of the stream has been reached
     * @see BufferedReader#readLine()
     */
    public static String readLine(final BufferedReader reader) {
        assertArgumentNotNull("reader", reader);

        try {

        SmbFileFilter filter = f -> {
            if (f == null) {
                throw new NullPointerException("file must not be null");
            }
            return true; // not reached in this test
        };

        // Act + Assert
        NullPointerException npe = assertThrows(NullPointerException.class, () -> filter.accept(null));
        assertEquals("file must not be null", npe.getMessage());

        return inputStream.markSupported();
    }

    /**
     * Reads the next byte of data from the input stream.
     *
     * @return the next byte of data, or -1 if the end of the stream is reached
     * @throws IOException if an I/O error occurs
     */
    @Override
    public int read() throws IOException {
        return inputStream.read();
    }

    /**

        state.incrementRetry(); // Retry 2
        assertTrue(state.shouldRetry());

        state.incrementRetry(); // Retry 3
        assertFalse(state.shouldRetry()); // Max retries reached
    }

    @Test
    void testFailoverStateBackoff() {
        ChannelFailover.FailoverState state = new ChannelFailover.FailoverState("test-channel");

        long firstRetry = state.getNextRetryTime();

                if (is == null) {
                    throw new IOException("Resource not found: non/existent/resource.json");
                }
                // This line should not be reached
                new String(is.readAllBytes(), StandardCharsets.UTF_8);
                fail("Should throw IOException for missing resource");
            }
        } catch (IOException e) {