assertTrue(npe2.getMessage().contains("non-null"));
        verifyNoInteractions(mockDir);
    }

    /**
     * Sanity: implementing via an anonymous class works the same as a lambda.
     */
    @Test
    @DisplayName("anonymous class implementation behaves correctly")
    void anonymousClassImplementation() throws Exception {
        SmbFilenameFilter filter = new SmbFilenameFilter() {

        }

        /**
         * Verifies that isStale returns true for a stale handle.
         */
        @Test
        public void testIsStale_ReturnsTrueWhenStale() {
            when(smbPipeHandle.isStale()).thenReturn(true);
            assertTrue(smbPipeHandle.isStale(), "isStale() should return true for a stale handle.");
        }
    }

    /**
     * Tests the unwrap functionality.
     */

        byte[] buffer2 = new byte[200];
        int encoded2 = request2.encode(buffer2, 0);
        assertEquals(request2.size(), encoded2);
    }

    @Test
    @DisplayName("Test multiple encodes produce same result")
    void testMultipleEncodesProduceSameResult() {
        // Setup
        String pipeName = "RepeatedEncode";
        long timeout = 3000L;

        }

        @Test
        @DisplayName("list propagates SmbUnsupportedOperationException from doEnum")
        void list_propagatesUnsupportedOperationException() throws Exception {
            // Arrange: same setup as above to force doEnum -> SmbUnsupportedOperationException
            SmbFile parent = mock(SmbFile.class, RETURNS_DEEP_STUBS);
            SmbResourceLocator locator = mock(SmbResourceLocator.class);

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      or other liability obligations and/or rights consistent with this
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        // Assert
        assertNull(ex.getCause(), "Null cause should be preserved");
        assertNotNull(ex.toString(), "toString should be safe to call");
    }

    @ParameterizedTest
    @NullAndEmptySource
    @ValueSource(strings = { "oops", "multi word", "中文" })
    @DisplayName("Message+Cause constructor: preserves both values; no interactions with cause")

        RequestData data1 = context.build();
        RequestData data2 = context.build();

        // Should return the same underlying object
        assertSame(data1, data2);
    }

    public void test_modifyAfterBuild() {
        // Test modifying context after build

        assertTrue(reqCap.getValue() instanceof Smb2ChangeNotifyRequest);
    }

    // call() should delegate to watch() and return the same list
    @Test
    @DisplayName("call() delegates to watch() and returns same result")
    void call_delegatesToWatch() throws Exception {
        List<FileNotifyInformation> info = new ArrayList<>();
        NotifyResponse resp = mock(NotifyResponse.class);

            for (int j = i + 1; j < events.length; j++) {
                assertNotEquals(events[i].getValue(), events[j].getValue(),
                        "Event types " + events[i] + " and " + events[j] + " have the same value");
            }
        }
    }

    @Test
    void testWitnessRegistrationStates() {
        assertEquals(5, WitnessRegistration.WitnessRegistrationState.values().length);