public void testPeekingIteratorBehavesLikeIteratorOnThreeElementIterable() {
    actsLikeIteratorHelper(Lists.newArrayList("A", "B", "C"));
  }

  @GwtIncompatible // works but takes 5 minutes to run
  public void testPeekingIteratorAcceptsNullElements() {
    actsLikeIteratorHelper(Lists.<@Nullable String>newArrayList(null, "A", null));
  }

  public void testPeekOnEmptyList() {

    void mock_noInteractions() {
        // Arrange/Act: do nothing
        // Assert: verify no interactions
        verifyNoInteractions(mockEntry);
    }

    // --- Fake implementation tests (happy path and edge cases) ---

    @Test
    @DisplayName("Fake implementation returns provided values (happy path)")
    void fakeImplementation_happyPath() {
        // Arrange

    private Configuration config;

    @Mock
    private Address address;

    @Mock
    private Smb2NegotiateResponse negotiateResponse;

    private SmbTransportImpl transport;

    @BeforeEach
    void setUp() throws Exception {
        when(context.getConfig()).thenReturn(config);
        when(config.isSigningEnforced()).thenReturn(false);
        when(config.getSessionTimeout()).thenReturn(30_000);

  }

  public void testFromStringUnusedDefaultPort() {
    // Default port, but unused.
    checkFromStringCase("gmail.com:81", 77, "gmail.com", 81, true);
    checkFromStringCase("192.0.2.2:83", 77, "192.0.2.2", 83, true);
    checkFromStringCase("[2001::2]:85", 77, "2001::2", 85, true);
  }

  public void testFromStringNonAsciiDigits() {

    class EncodeTests {

        private byte[] buffer;
        private int startIndex;

        @BeforeEach
        void setUp() {
            buffer = new byte[100];
            startIndex = 10;
        }

        @Test
        @DisplayName("Should encode basic values correctly")
        void testEncodeBasicValues() {
            // Given
            long sourceOffset = 1024L;
            long targetOffset = 2048L;

    @Test
    @DisplayName("isIPC is true for IPC$ or no share")
    void testIsIpc() {
        assertTrue(locator("smb://server/IPC$/").isIPC());
        assertTrue(locator("smb://server/").isIPC());
        assertFalse(locator("smb://server/share/").isIPC());
    }

    @Test
    @DisplayName("Type detection covers filesystem/share/IPC/workgroup/server")
    void testGetType() throws Exception {

/**
 * Unit tests for the Help goal.
 */
class HelpTest {

    private Help help;

    @BeforeEach
    void setUp() {
        help = new Help();
    }

    private UpgradeContext createMockContext() {
        return TestUtils.createMockContext();
    }

    @Test
    void testHelpExecuteReturnsZero() throws Exception {
        UpgradeContext context = createMockContext();

        if (extension == null) {
            return type;
        }
        return extension;
    }

    public void setExtension(final String extension) {
        this.extension = extension;
    }

    @Override
    public String getClassifier() {
        return classifier;
    }

    public void setClassifier(final String classifier) {
        this.classifier = classifier;
    }

    @Override

  }

  @Override
  public void write(byte[] b, int off, int len) throws IOException {
    // Override slow FilterOutputStream impl
    out.write(b, off, len);
  }

  @Override
  public void writeBoolean(boolean v) throws IOException {
    ((DataOutputStream) out).writeBoolean(v);
  }

  @Override
  public void writeByte(int v) throws IOException {
    ((DataOutputStream) out).writeByte(v);

  @GwtIncompatible // blocking wait
  public void testToString() throws Exception {
    CountDownLatch enterLatch = new CountDownLatch(1);
    CountDownLatch exitLatch = new CountDownLatch(1);
    TrustedListenableFutureTask<@Nullable Void> task =
        TrustedListenableFutureTask.create(
            new Callable<@Nullable Void>() {
              @Override
              public @Nullable Void call() throws Exception {