// Arrange: configure the mock to throw
        doThrow(new CIFSException("DFS resolution failed")).when(handle).ensureDFSResolved();

        // Act + Assert: exception is propagated with message
        CIFSException ex = assertThrows(CIFSException.class, () -> handle.ensureDFSResolved());
        assertEquals("DFS resolution failed", ex.getMessage());
        verify(handle, times(1)).ensureDFSResolved();

        assertTrue(n > 0);
        // Note: In actual implementation, uid is NOT propagated for non-AndX SMBs
        // uid is only set for AndXServerMessageBlock instances (line 167 in AndXServerMessageBlock.java)
        // Only useUnicode is set before the instanceof check (line 149)
        assertEquals(block.useUnicode, next.useUnicode, "useUnicode must be propagated");

        // Assert
        assertSame(tree, result, "ensureTreeConnected should return handle's tree");
        verify(handle, times(1)).ensureTreeConnected();
    }

    @Test
    @DisplayName("ensureTreeConnected propagates CIFSException from handle")
    void ensureTreeConnected_propagatesException() throws Exception {
        // Arrange
        SmbPipeOutputStream out = newStream();
        CIFSException boom = new CIFSException("tree-fail");

        // Act
        tree.connectLogon(null);

        // Assert - even null should be passed through to implementation
        verify(tree).connectLogon(null);
    }

    @Test
    @DisplayName("connectLogon propagates SmbException from implementation")
    void connectLogon_throws_propagates() throws Exception {
        // Arrange
        doThrow(new SmbException("login failed")).when(tree).connectLogon(context);

        // Act + Assert

   * Object#toString}.
   *
   * <p>If the target method call finishes before the limit is reached, the return value or
   * exception is propagated to the caller exactly as-is. If, on the other hand, the time limit is
   * reached, the proxy will attempt to abort the call to the target, and will throw an {@link
   * UncheckedTimeoutException} to the caller.
   *

        verify(mockBuffer).dec_ndr_long();
    }

    /**
     * Test case for the encode method when it throws an NdrException.
     * Verifies that the exception is correctly propagated.
     */
    @Test
    void testEncodeThrowsNdrException() {
        // Given
        ndrObject.setThrowOnEncode(true);

        // When & Then
        assertThrows(NdrException.class, () -> {

        TestIterator iterator = new TestIterator(null);
        iterator.close();

        verify(delegate).close();
    }

    @Test
    @DisplayName("Close propagates exception")
    void closeException() throws CIFSException {
        when(delegate.hasNext()).thenReturn(false);
        doThrow(new CIFSException("Close failed")).when(delegate).close();

import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Flushables}.
 *
 * <p>Checks proper flushing behavior, and ensures that IOExceptions on Flushable.flush() are not
 * propagated out from the {@link Flushables#flush} method if {@code swallowException} is true.
 *
 * @author Michael Lancaster
 */
@NullUnmarked
public class FlushablesTest extends TestCase {
  private Flushable mockFlushable;

/**
 * Tests for {@link SmbFilenameFilter}. Since the interface only defines
 * a single method, the tests simply ensure that the lambda expression
 * correctly implements the method and that any exception is propagated.
 */
class SmbFilenameFilterTest {

    @Test
    void acceptReturnsTrueWhenNameMatches() throws Exception {
        SmbFile dir = Mockito.mock(SmbFile.class);

        verify(treeConnection).ensureDFSResolved(resourceLoc);
    }

    @Test
    @DisplayName("hasCapability delegates and propagates exceptions")
    void hasCapabilityDelegates() throws Exception {
        // Happy path delegates; invalid case propagates SmbException
        when(treeConnection.hasCapability(123)).thenReturn(true);
        assertTrue(handle.hasCapability(123));