// Creates a minimal valid CIFS context that does not perform I/O by itself
    private CIFSContext ctx() {
        return SingletonContext.getInstance();
    }

    @Nested
    @DisplayName("Constructor behavior")
    class ConstructorTests {

        @ParameterizedTest
        @DisplayName("Accepts IPC$ URLs (happy path)")
        @ValueSource(strings = { "smb://server/IPC$/foo", "smb://server/IPC$/PIPE/foo" })

    @MethodSource("messages")
    @DisplayName("Message constructor preserves provided messages, including null/edge cases")
    void messageConstructor_preservesMessage(String msg) {
        // Arrange & Act
        SmbUnsupportedOperationException ex = new SmbUnsupportedOperationException(msg);

        // Assert
        assertEquals(msg, ex.getMessage(), "Constructor should preserve the provided message (including null)");

   *     constructor that omits the cause.
   */
  @Deprecated
  protected UncheckedExecutionException() {}

  /**
   * Creates a new instance with the given detail message and no cause.
   *
   * @deprecated Prefer {@linkplain UncheckedExecutionException(String, Throwable)} a constructor

        // We cannot directly access private fields of MsrpcSamrOpenAlias or its superclass
        // Instead, we verify the interaction with the DcerpcHandle and the return value.
        // The fact that the constructor completes without exception and sets 'opened' to true
        // implies the correct parameters were used internally.
    }

    @Test
    void constructor_shouldThrowSmbExceptionOnOpenFailure() throws IOException {

import jcifs.smb1.UniAddress;

/**
 * Unit tests for {@link NtlmChallenge}.
 */
class NtlmChallengeTest {

    @Nested
    @DisplayName("Constructor and Field Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Constructor sets fields correctly")
        void testConstructorSetsFields() {
            byte[] challenge = new byte[] { 1, 2, 3 };
            UniAddress dc = mock(UniAddress.class);

            HMACT64 hmac = new HMACT64(TEST_KEY);
            hmac.engineReset();
            verify(mockMd5, times(2)).reset(); // Once in constructor, once in reset
            verify(mockMd5, times(2)).update(any(byte[].class)); // Once in constructor, once in reset
        }
    }

    @Test
    void testEngineGetDigestLength() throws NoSuchAlgorithmException {
        // Test engineGetDigestLength()

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;

import org.junit.jupiter.api.Test;

class AvChannelBindingsTest {

    /**
     * Test that the constructor correctly initializes with a valid channel binding hash.
     */
    @Test
    void testConstructorWithValidHash() {
        byte[] testHash = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };

    private final Sync<V> sync = new Sync<V>();

    // The execution list to hold our executors.
    private final ExecutionList executionList = new ExecutionList();

    /** Constructor for use by subclasses. */
    protected OldAbstractFuture() {}

    /*
     * Improve the documentation of when InterruptedException is thrown. Our

        // Assert
        assertEquals(fid, getFieldValue(write, "fid"), "FID should match constructor arg");
        assertEquals(offset, getFieldValue(write, "offset"), "Offset should match constructor arg");
        assertEquals(remaining, getFieldValue(write, "remaining"), "Remaining should match constructor arg");
        assertEquals(buffer, getFieldValue(write, "b"), "Buffer reference should be set");

        // Test constructor with null message
        CommandExecutionException exception = new CommandExecutionException(null);

        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withNullMessageAndCause() {
        // Test constructor with null message and null cause