* verifying interaction.
     */
    private class RecordingFilter implements SmbFileFilter {
        private SmbFile lastFile;
        private String lastPath;

        @Override
        public boolean accept(SmbFile file) throws SmbException {
            lastFile = file;
            // Actually interact with the file to verify the mock interaction
            if (file != null) {

            assertSame(rp, Enum.valueOf(RequestParam.class, rp.name()));
        }
    }

    // Interaction: Demonstrate no external interactions occur (no collaborators to call)
    // We use Mockito in a minimal, meaningful way: pass the enum to a mocked consumer and verify interaction.
    interface EnumConsumer {
        void accept(RequestParam rp);
    }

    @Mock
    EnumConsumer consumer;

import jcifs.internal.Request;

/**
 * Tests for SmbTreeInternal interface behavior via mocks.
 * Since this is an interface, we validate its public API contract
 * through interaction testing and generic type usage.
 */
@ExtendWith(MockitoExtension.class)
class SmbTreeInternalTest {

    @Mock
    private SmbTreeInternal tree;

    @Mock
    private CIFSContext context;

    @Mock

/**
 * Unit tests for {@link FileEntry}. The interface itself has no
 * implementation, so the tests exercise the contract via Mockito mocks.
 * Each method is exercised for normal inputs, extreme or edge cases, and
 * interaction verification.
 */
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;

    }

    // Simple collaborator to demonstrate interaction verification with Mockito
    interface Handler {
        void handle(int code, String message);
    }

    @Mock
    Handler handler;

    @Test
    @DisplayName("Interaction: handler called with each code/message pair")
    void interaction_with_mock_handler_is_as_expected() {
        // Interaction test: simulate passing each code/message to a collaborator

        assertEquals(0x80, SmbConstants.FLAGS_RESPONSE);
    }

    /**
     * Test interaction with SmbTransport using Mockito.
     * This demonstrates mocking capabilities for testing.
     */
    @Test
    @DisplayName("Mock interaction example with SmbTransport")
    void mockTransportInteraction() {
        // Create a mock of SmbTransport from jcifs package

        Supplier<String> supplier = mock(Supplier.class);
        when(supplier.get()).thenThrow(new RuntimeException(new SmbUnsupportedOperationException("boom")));

        // Act & Assert: the exception is propagated and interaction recorded once
        RuntimeException thrown = assertThrows(RuntimeException.class, supplier::get);
        assertInstanceOf(SmbUnsupportedOperationException.class, thrown.getCause());

    void release_invokedOnce() throws Exception {
        // Arrange: no setup needed; we verify interaction only

        // Act: call release
        handle.release();

        // Assert: verify one invocation and no more
        verify(handle, times(1)).release();
        verifyNoMoreInteractions(handle);
    }

    @Test

        wrapper.release();

        // Assert: delegate interactions occur when usage transitions happen
        verify(delegate, times(1)).acquire();
        verify(delegate, times(1)).release();
    }

    @Test
    @DisplayName("finalize() invokes checkRelease exactly once")
    void finalize_invokes_checkRelease() throws Throwable {
        // Arrange: spy to verify internal interaction with checkRelease()

        assertEquals(url, file.getURL(), "Returned SmbFile should wrap the given URL");
        assertSame(mockCtx, file.getContext(), "SmbFile must use the provided CIFSContext");
        verify(mockCtx, atLeastOnce()).getConfig(); // interaction with dependency
    }

    @Test
    @DisplayName("openConnection with null URL throws NullPointerException")
    void testOpenConnection_NullInput() {
        // Arrange