a=0,t=La.length;a<t;a++)if(La[a][1].exec(_[1])){n=La[a][0],s=!1!==La[a][2];break}if(null==n)return void(e._isValid=!1);if(_[3]){for(a=0,t=Ya.length;a<t;a++)if(Ya[a][1].exec(_[3])){r=(_[2]||" ")+Ya[a][0];break}if(null==r)return void(e._isValid=!1)}if(!s&&null!=r)return void(e._isValid=!1);if(_[4]){if(!ca.exec(_[4]))return void(e._isValid=!1);d="Z"}e._f=n+(r||"")+(d||""),va(e)}else e._isValid=!1}function Da(e,a,t,s,n,r){var d=[function(e){var a=parseInt(e,10);{if(a<=49)return 2e3+a;if(a<=999)return...

        assertTrue(validator.isValid(null, context));
    }

    public void test_isValid_blankValue() {
        final ConstraintValidatorContext context = null;
        assertTrue(validator.isValid(" ", context));
        assertTrue(validator.isValid("   ", context));
        assertTrue(validator.isValid("\t", context));
        assertTrue(validator.isValid("\n", context));
    }

    }

    /**
     * Test isValid() when the handle is valid.
     */
    @Test
    void testIsValid_whenValid() {
        when(smbFileHandle.isValid()).thenReturn(true);
        assertTrue(smbFileHandle.isValid(), "isValid should return true when the handle is valid.");
        verify(smbFileHandle, times(1)).isValid();
    }

    /**
     * Test isValid() when the handle is invalid.
     */
    @Test

    }

    @Test
    @DisplayName("Test isValid returns false for invalid negotiation")
    void testIsValidReturnsFalse() {
        // Arrange
        when(negotiationResponse.isValid(cifsContext, negotiationRequest)).thenReturn(false);

        // Act
        boolean result = negotiationResponse.isValid(cifsContext, negotiationRequest);

        // Assert

        when(mockFileHandle.isValid()).thenReturn(false);
        assertFalse(outputStream.isOpen());
    }

    @Test
    void testWriteAfterClose() throws IOException, CIFSException {
        // Given
        when(mockTreeHandle.isSMB2()).thenReturn(true);
        when(mockTreeHandle.getSendBufferSize()).thenReturn(65536);
        when(mockFileHandle.isValid()).thenReturn(true);

utc","getParsingFlags","m","_pf","empty","unusedTokens","unusedInput","overflow","charsLeftOver","nullInput","invalidEra","invalidMonth","invalidFormat","userInvalidated","iso","parsedDateParts","era","meridiem","rfc2822","weekdayMismatch","isValid","_isValid","flags","parsedParts","isNowValid","isNaN","_d","getTime","invalidWeekday","_strict","undefined","bigHour","isFrozen","createInvalid","NaN","fun","t","len","momentProperties","updateInProgress","copyConfig","to","from","prop","val","_isAMo...

        validator.initialize(annotation);

        // Test that the method can be called (even if context handling is complex)
        try {
            final boolean result = validator.isValid("test", null);
            assertNotNull("isValid should return a boolean result", Boolean.valueOf(result));
        } catch (final NullPointerException e) {
            // This is expected if the implementation requires a non-null context

                    this.currentHash = newHash.clone();
                }
            }
        }

        public boolean isValid() {
            return isValid;
        }

        public void invalidate() {
            this.isValid = false;
            // Clear sensitive data
            synchronized (hashLock) {
                Arrays.fill(currentHash, (byte) 0);
            }

        assertTrue(h.isValid());

        // Tree id change makes it invalid
        when(tree.getTreeId()).thenReturn(11L);
        assertFalse(h.isValid());

        // Connected=false makes it invalid
        when(tree.getTreeId()).thenReturn(10L);
        when(tree.isConnected()).thenReturn(false);
        assertFalse(h.isValid());

        // Mark closed makes it invalid

    @Mock
    SmbTreeHandleImpl tree;

    // Prepare SMB2 flow with a given response
    private void setupSmb2(NotifyResponse resp, byte[] fileId) throws Exception {
        when(handle.isValid()).thenReturn(true);
        when(handle.getTree()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true);
        when(tree.getConfig()).thenReturn(mock(Configuration.class));