public void testClose() throws CIFSException {
            assertDoesNotThrow(() -> smbPipeHandle.close(), "close() should not throw an exception on a mock object.");
            // Verify that the close method was called
            Mockito.verify(smbPipeHandle).close();
        }

        /**
         * Verifies that the isOpen method returns true for an open handle.
         */
        @Test

import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

    void testPasswordStoredAsCharArray() throws Exception {
        authenticator = new NtlmPasswordAuthenticator("DOMAIN", "username", "password123");

        // Use reflection to verify password is stored as char[]
        Field passwordField = NtlmPasswordAuthenticator.class.getDeclaredField("password");
        passwordField.setAccessible(true);
        Object passwordValue = passwordField.get(authenticator);

        // Verify wrong pattern does NOT match (demonstrates the bug)
        assertFalse(svgMimetype.matches(svgPatternWrong));

        // Verify correct pattern DOES match (demonstrates the fix)
        assertTrue(svgMimetype.matches(svgPatternCorrect));

        // Verify other common MIME types still work (no special chars)

            assertEquals("fuzzy", fuzzyQueryBuilder.value());
            assertEquals(1.8f, fuzzyQueryBuilder.boost());
        } else {
            // For DefaultQueryBuilder or DisMaxQueryBuilder, we just verify it was created
            assertTrue(result instanceof DefaultQueryBuilder || result instanceof DisMaxQueryBuilder);
        }
    }

    @Test
    public void test_execute_withNestedBoostQuery() {

import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import java.lang.reflect.Method;
import java.util.stream.Stream;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

        assertTrue(doneLatch.await(5, TimeUnit.SECONDS), "Threads did not complete in time");
        executor.shutdown();

        // Verify hash is not null
        byte[] hash = transport.getPreauthIntegrityHash();
        assertNotNull(hash);

        // Verify hash is a copy, not the original
        byte[] hash2 = transport.getPreauthIntegrityHash();
        assertNotSame(hash, hash2);

        // Test setting different max group depths
        authenticator.setMaxGroupDepth(5);
        authenticator.setMaxGroupDepth(20);
        authenticator.setMaxGroupDepth(1);

        // Verify method accepts valid values without exception
        assertTrue(true);
    }

    @Test
    public void test_setGroupCacheExpiry() {
        EntraIdAuthenticator authenticator = new EntraIdAuthenticator();

        UnsupportedSearchException exception = new UnsupportedSearchException("test message");

        assertNotNull(exception.getStackTrace());
        assertTrue(exception.getStackTrace().length > 0);

        // Verify the stack trace contains this test method
        boolean foundTestMethod = false;
        for (StackTraceElement element : exception.getStackTrace()) {

        assertFalse(filter.accept(mockDir, "image.png"), "Should reject non-.txt files");
        assertFalse(filter.accept(mockDir, null), "Should reject null names");

        // Verify getPath was called three times (once for each accept call)
        verify(mockDir, times(3)).getPath();
        verifyNoMoreInteractions(mockDir);
    }

    /**
     * Defensive behavior: implementation throws NPE on null inputs by design.
     */