// 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

                "-1, -1, -1", // Negative values (should still create instance)
                "0, 9223372036854775807, 0" // Edge cases
        })
        void testConstructorWithVariousValues(long sourceOffset, long targetOffset, int length) {
            // When
            SrvCopychunk chunk = new SrvCopychunk(sourceOffset, targetOffset, length);

        assertSame(tz1, tz2);
        assertSame(FessUserTimeZoneProcessProvider.centralTimeZone, tz1);
    }

    // Test with null RequestManager (edge case)
    public void test_getRequestedTimeZone_withNullRequestManager() {
        // Execute with null request manager
        TimeZone result = provider.getRequestedTimeZone(null);

        NdrHyper decoded = new NdrHyper(0);
        decoded.decode(buf);
        assertEquals(original, decoded.value, "Decoded value should match encoded value");
    }

    /**
     * Parameterised test for a selection of edge and typical values.
     */
    @ParameterizedTest(name = "Encode and decode {0}")
    @ValueSource(longs = { 0L, 1L, -1L, Long.MAX_VALUE, Long.MIN_VALUE })

 * parameter word (the session identifier) is written in little‑endian form
 * and that the {@code toString} helper contains the expected values.
 *
 * <p>The tests also exercise edge cases such as negative (wrap‑around) session
 * identifiers and confirm that the writer does not alter any internal state.
 *</p>
 */
@ExtendWith(MockitoExtension.class)
class SmbComFindClose2Test {

    @Mock

            assertNotNull(msg);
            assertTrue(msg instanceof samr.SamrConnect2);
            assertTrue(msg instanceof DcerpcMessage);
        }
    }

    @Nested
    @DisplayName("Edge case handling")
    class EdgeCases {

        @Test
        @DisplayName("should handle null system name")
        void testNullSystemNameDoesNotThrow() {
            // Arrange

/**
 * Tests for SMBProtocolDowngradeException covering all constructors and behaviors.
 */
@ExtendWith(MockitoExtension.class)
class SMBProtocolDowngradeExceptionTest {

    /**
     * Provides messages including edge cases (null and empty) for parameterized testing.
     */
    static Stream<Arguments> messages() {
        return Stream.of(Arguments.of((String) null), Arguments.of(""), Arguments.of("unexpected downgrade"));
    }

        assertSame(handle, handle.unwrap(SmbPipeHandle.class), "unwrap should return same instance for interface type");
    }

    @ParameterizedTest
    @DisplayName("getPipeType echoes constructor input (edge values)")
    @ValueSource(ints = { 0, SmbPipeResource.PIPE_TYPE_RDONLY, SmbPipeResource.PIPE_TYPE_WRONLY, SmbPipeResource.PIPE_TYPE_DCE_TRANSACT })
    void getPipeTypeEchoesInput(int pipeType) throws Exception {

            // Then
            assertEquals(443, httpsPort);
            assertEquals(80, httpPort);
            assertNotEquals(httpsPort, httpPort);
        }
    }

    @Nested
    @DisplayName("Edge Cases")
    class EdgeCaseTests {

        @Test
        @DisplayName("Should handle reflection access to protected method")
        void testProtectedMethodAccess() throws Exception {
            // Given

    }

    /**
     * When lastWriteTime is zero the encoded unsigned time must be all 1s.
     */
    @Test
    @DisplayName("edge: writeParameterWordsWireFormat with lastWriteTime=0")
    void testWriteParameterWordsZeroUTime() {
        SmbComClose close = new SmbComClose(42, 0L);
        byte[] buffer = new byte[6];