* use a framework. Frameworks automate the process, often adding features like monitoring,
 * debugging, and cancellation. Examples of frameworks include:
 *
 * <ul>
 *   <li><a href="https://dagger.dev/producers.html">Dagger Producers</a>
 * </ul>
 *
 * <h4>{@link java.util.concurrent.CompletableFuture} / {@link java.util.concurrent.CompletionStage}
 * </h4>
 *

 * inserted by producers and extracted by consumers. Once created, the capacity cannot be increased.
 * Attempts to {@code put} an element into a full queue will result in the operation blocking;
 * attempts to {@code take} an element from an empty queue will similarly block.
 *
 * <p>This class supports an optional fairness policy for ordering waiting producer and consumer

 * monitoring, debugging, and cancellation. Examples of frameworks include:
 *
 * <ul>
 *   <li><a href="https://dagger.dev/producers.html">Dagger Producers</a>
 * </ul>
 *
 * <p>If you do chain your operations manually, you may want to use {@link FluentFuture}.
 *
 * @author Kevin Bourrillion
 * @author Nishant Thakkar
 * @author Sven Mawson

      assertEquals(0, Queues.drain(q, ImmutableList.of(), 1, 10, MILLISECONDS));

      Producer producer = new Producer(q, 1);
      // producing one, will ask for two
      Future<?> producerThread = threadPool.submit(producer);
      producer.beganProducing.await();

      // make sure we time out
      Stopwatch timer = Stopwatch.createStarted();

        // When
        MessageDigest md4 = Crypto.getMD4();
        byte[] hash = md4.digest(data);

        // Then
        assertNotNull(hash);
        assertEquals(16, hash.length); // MD4 produces 128-bit hash
    }

    @Test
    @DisplayName("Should calculate MD5 hash correctly")
    void testMD5Hash() {
        // Given
        String input = "Hello World";
        byte[] data = input.getBytes();

            assertNull(nc.dc);
        }
    }

    @Nested
    @DisplayName("toString() Tests")
    class ToStringTests {

        @Test
        @DisplayName("toString with valid data produces expected format")
        void testToStringWithValidData() {
            byte[] challenge = new byte[] { (byte) 0x01, (byte) 0x02, (byte) 0x03, (byte) 0xFF };
            UniAddress dc = mock(UniAddress.class);

        assertTrue(result.contains("nextEntry="));
        assertTrue(result.contains("action="));
        assertTrue(result.contains("file=" + fileName));
        // Hexdump.toHexString produces 4-character padded uppercase hex
        String expectedHex = String.format("%04X", action);
        assertTrue(result.contains("0x" + expectedHex));
    }

    @Test

        hmac.engineUpdate(TEST_DATA, 0, TEST_DATA.length);
        byte[] result = hmac.engineDigest();

        assertNotNull(result);
        assertEquals(16, result.length); // MD5 produces 16 bytes
    }

    @Test
    void testEngineDigestWithBuffer() {
        // Test engineDigest(byte[] buf, int offset, int len)
        HMACT64 hmac = new HMACT64(TEST_KEY);

   */
  public void testAllPublicInstanceMethods(Object instance) {
    testInstanceMethods(instance, Visibility.PUBLIC);
  }

  /**
   * Verifies that {@code method} produces a {@link NullPointerException} or {@link
   * UnsupportedOperationException} whenever <i>any</i> of its non-nullable parameters are null.
   *

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.util;

/**
 * Functional interface for boolean functions.
 * Represents a function that accepts one argument and produces a boolean result.
 * @param <T> the type of the input to the function
 */
@FunctionalInterface
public interface BooleanFunction<T> {
    /**
     * Applies this function to the given argument.