SmbException ex = assertThrows(SmbException.class, () -> transport.hasCapability(42));
        assertTrue(ex.getMessage().contains("failed"));
        verify(transport).hasCapability(42);
    }

    // Edge: disconnected status toggles
    @ParameterizedTest
    @DisplayName("isDisconnected reflects current mocked state")
    @ValueSource(booleans = { true, false })
    void isDisconnected_states(boolean disconnected) {

        assertTrue((request.getFlags() & SMB2_FLAGS_ASYNC_COMMAND) != 0, "Async flag should be set for non-zero asyncId");
    }

    @Test
    @DisplayName("Test edge case with maximum values")
    void testMaximumValues() {
        // Given
        long maxMid = Long.MAX_VALUE;
        long maxAsyncId = Long.MAX_VALUE;
        int maxCredits = Integer.MAX_VALUE;

    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

import org.junit.jupiter.params.provider.ValueSource;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

/**
 * Comprehensive test suite for NdrShort class
 * Tests construction, encoding, decoding, and edge cases
 */
@ExtendWith(MockitoExtension.class)
@DisplayName("NdrShort Test Suite")
class NdrShortTest {

    @Mock
    private NdrBuffer mockBuffer;

    @Nested
    @DisplayName("Constructor Tests")

            assertThrows(CIFSException.class, () -> ctx.initSecContext(buf, 2, 2));
        }

        @Test
        @DisplayName("initSecContext null token edge cases")
        void testInitSecContextNullToken() throws Exception {
            DummySSPContext ctx = new DummySSPContext(new byte[] { 1 }, false, null, null, 0, false);
            // len == 0 is allowed and returns empty token

    }

    @Test
    @DisplayName("Test initial credits edge cases")
    void testInitialCreditsEdgeCases() {
        // Test zero credits
        when(negotiationResponse.getInitialCredits()).thenReturn(0);
        assertEquals(0, negotiationResponse.getInitialCredits());

        // Test negative credits (edge case)
        when(negotiationResponse.getInitialCredits()).thenReturn(-1);

        @CsvSource({ "0, 0", "1024, 512", "1048576, 524288", "1073741824, 536870912", "9223372036854775807, 4611686018427387903", // Long.MAX_VALUE and half
                "-1, -1", // Negative values (edge case)
                "100, 200" // Free space greater than capacity (edge case)
        })
        void shouldHandleVariousValues(long capacity, long free) {
            // Given
            TestAllocInfo allocInfo = new TestAllocInfo(capacity, free);

        // Transport wiring - used by most tests
        when(transport.acquire()).thenReturn(transport);
        when(transport.getContext()).thenReturn(cifsContext);
    }

    // Helper to set private fields for targeted edge cases
    private static void setField(Object target, String name, Object value) {
        try {
            Field f = target.getClass().getDeclaredField(name);
            f.setAccessible(true);

            int result = response.readBytesWireFormat(buffer, bufferIndex);
            assertEquals(2, result, "Should consistently return 2 on call " + (i + 1));
        }
    }

    @Test
    @DisplayName("Test edge case with maximum buffer index")
    void testReadBytesWireFormatMaxBufferIndex() throws SMBProtocolDecodingException {
        byte[] buffer = new byte[65536]; // Large buffer
        int bufferIndex = 65534; // Near the end

            // When & Then
            assertEquals(attributes, info.getAttributes());
        }
    }

    @Test
    @DisplayName("Test with edge case time values")
    void testWithEdgeCaseTimeValues() {
        // Test with various time values including edge cases
        long[][] timeValues = { { 0L, 0L, 0L, 0L }, // All zeros
                { Long.MAX_VALUE, Long.MAX_VALUE, Long.MAX_VALUE, Long.MAX_VALUE }, // Max values