import java.io.IOException;

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

/**
 * Unit tests for TransportException class
 */
public class TransportExceptionTest {

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create exception with no arguments")

        smbInfoAllocation = new SmbInfoAllocation();
    }

    @Test
    @DisplayName("Test getFileSystemInformationClass returns SMB_INFO_ALLOCATION")
    void testGetFileSystemInformationClass() {
        assertEquals(FileSystemInformation.SMB_INFO_ALLOCATION, smbInfoAllocation.getFileSystemInformationClass());
    }

    @Test
    @DisplayName("Test decode with typical values")

        when(mockContext.getConfig()).thenReturn(mockConfig);
        echoRequest = new Smb2EchoRequest(mockConfig);
    }

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create echo request with correct command")
        void testConstructor() throws Exception {
            Smb2EchoRequest request = new Smb2EchoRequest(mockConfig);

    }

    @Test
    @DisplayName("getResponse before initResponse returns null")
    void getResponseInitiallyNull() {
        SmbComNTCreateAndX req = createRequest(0, 0);
        assertNull(req.getResponse(), "Before init, response is null");
    }

    @Test
    @DisplayName("toString representation contains expected fields")
    void toStringContainsKeyData() {

        }
    }

    @Test
    @DisplayName("getDefaultPort returns SMB default port 445")
    void testGetDefaultPort() {
        // Act
        int port = handler.getDefaultPort();

        // Assert
        assertEquals(445, port);
        assertEquals(SmbConstants.DEFAULT_PORT, port);
    }

    @Test
    @DisplayName("openConnection creates SmbFile for valid URL")

        }
    }

    @Nested
    @DisplayName("Constructor and initialization")
    class ConstructorTests {

        @Test
        @DisplayName("Should create MimeMap instance successfully")
        void testConstructor() {
            assertDoesNotThrow(() -> new MimeMap());
        }

        @Test
        @DisplayName("Should load mime.map resource properly")

import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;

import java.lang.reflect.Method;
import java.util.Arrays;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

        assertEquals("remove", ex.getMessage());
    }

    @Nested
    @DisplayName("Invalid constructor inputs")
    class InvalidInputs {
        @Test
        @DisplayName("Null delegate causes NullPointerException during construction")
        void nullDelegate_throwsNPE() throws Exception {
            SmbFile parent = newParent();

    @Nested
    class InvalidConstruction {
        @Test
        @DisplayName("Negative maxBuffers throws immediately in constructor")
        void negativeMaxBuffersThrows() {
            assertThrows(NegativeArraySizeException.class, () -> new BufferCacheImpl(-1, 10));
        }

        @Test
        @DisplayName("Negative maxSize throws when allocating a new buffer")

        when(mockData.getDomain()).thenReturn("DOMAIN");
        return (DfsReferralDataImpl) base.combine(mockData);
    }

    @Nested
    @DisplayName("Interface Method Contract Tests")
    class InterfaceMethodTests {

        @Test
        @DisplayName("Should fixup host with FQDN")
        void testFixupHost() {
            String fqdn = "server.example.com";

            // Test with mock