response.readBytesWireFormat(tooSmallBuffer, 0);
        });

        assertTrue(exception.getMessage().contains("Buffer too small for SMB2 negotiate response"));
        assertTrue(exception.getMessage().contains("minimum 65 bytes required"));
    }

    /**
     * Test validation of excessive negotiate context count.
     */
    @Test

Contributing
============

Keeping the project small and stable limits our ability to accept new contributors. We are not
seeking new committers at this time, but some small contributions are welcome.

If you've found a security problem, please follow our [bug bounty][security] program.

If you've found a bug, please contribute a failing test case so we can study and fix it.

If you have a new feature idea, please build it in an external library. There are

Contributing
============

Keeping the project small and stable limits our ability to accept new contributors. We are not
seeking new committers at this time, but some small contributions are welcome.

If you've found a security problem, please follow our [bug bounty][security] program.

If you've found a bug, please contribute a failing test case so we can study and fix it.

If you have a new feature idea, please build it in an external library. There are

    }

    @Test
    void testEncodeDestinationTooSmall() {
        // Test when destination array is too small
        byte[] data = { 0x01, 0x02, 0x03 };
        ByteEncodable encodable = new ByteEncodable(data, 0, 3);
        byte[] dest = new byte[2]; // Destination is too small

        // Expect IndexOutOfBoundsException from System.arraycopy
        assertThrows(IndexOutOfBoundsException.class, () -> {

import static org.mockito.Mockito.when;

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

/**
 * Unit tests for {@link SmbFileFilter}. The filter interface is small; the
 * tests focus on the contract that implementations should honour and the
 * interaction with {@link SmbFile} instances. The tests make heavy use of
 * Mockito to guarantee that implementation classes do not inadvertently

import java.util.Optional;

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

/**
 * Tests for {@link DosError}.  Since {@link DosError} only contains
 * constants, the tests exercise the data and small helper logic in this
 * test class.
 */
public class DosErrorTest {
    private static Optional<Integer> findNtStatus(int dosErrorCode) {

    }

    @Test
    void testReadDataWireFormat_BufferTooSmall() throws Exception {
        // Test with buffer too small for complete data
        response = new Trans2QueryFSInformationResponse(config, FileSystemInformation.SMB_INFO_ALLOCATION);

        byte[] buffer = new byte[10]; // Too small for SmbInfoAllocation

        // Set dataCount
        setDataCount(response, 10);

    int NT_STATUS_MORE_PROCESSING_REQUIRED = 0xC0000016;
    /** Access is denied */
    int NT_STATUS_ACCESS_DENIED = 0xC0000022;
    /** The data area passed to a system call is too small */
    int NT_STATUS_BUFFER_TOO_SMALL = 0xC0000023;
    /** The object name is invalid */
    int NT_STATUS_OBJECT_NAME_INVALID = 0xC0000033;
    /** The object was not found */

        assertEquals(0xFFFFFFFF, response.getMaximalAccess());
    }

    @Test
    @DisplayName("Should handle buffer too small for reading")
    void testBufferTooSmall() {
        // Given
        byte[] buffer = new byte[15]; // Too small for 16-byte structure
        SMBUtil.writeInt2(16, buffer, 0);

        // When & Then
        assertThrows(ArrayIndexOutOfBoundsException.class, () -> {

@ExtendWith(MockitoExtension.class)
public class SmbAuthExceptionTest {

    /**
     * Provide representative error codes for the int constructor.
     * - NT status code (high bits set)
     * - Success code (0)
     * - Non-NT small code to exercise default mapping to NT_STATUS_UNSUCCESSFUL
     */
    static Stream<Arguments> intErrorCodes() {
        return Stream.of(Arguments.of(NtStatus.NT_STATUS_ACCESS_DENIED, NtStatus.NT_STATUS_ACCESS_DENIED),