@BeforeEach
    void setup() {
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockNegotiate.getServerData()).thenReturn(new ServerDataStub());
    }

    private void setupNegotiateStubs() {
        when(mockNegotiate.getNegotiatedCapabilities()).thenReturn(0x00123456);
        when(mockNegotiate.getNegotiatedSendBufferSize()).thenReturn(65535);
        when(mockNegotiate.getNegotiatedMpxCount()).thenReturn(65535);

        lenient().when(mockNdrBuffer.derive(anyInt())).thenReturn(mockDeferredNdrBuffer);
        lenient().when(mockDeferredNdrBuffer.derive(anyInt())).thenReturn(mockDeferredNdrBuffer);

        // Set up lenient stubs for common operations to avoid unnecessary stubbing exceptions
        lenient().when(mockNdrBuffer.getIndex()).thenReturn(0);
        lenient().when(mockDeferredNdrBuffer.getIndex()).thenReturn(0);

        @DisplayName("Should return root cause when set")
        void testGetRootCause() {
            Exception rootCause = new IllegalStateException("Test root cause");
            TransportException exception = new TransportException("Message", rootCause);

            assertEquals(rootCause, exception.getRootCause());
        }

        @Test
        @DisplayName("Should return null when no root cause")

import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoInteractions;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;

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;

        List<UrlQueueImpl<Long>> newUrlList = new ArrayList<>();
        newUrlList.add(newUrl1);
        newUrlList.add(newUrl2);

        when(dataHelper.getUrlQueueList(sessionId)).thenReturn(existingQueue);
        when(dataHelper.getAccessResultMap(sessionId)).thenReturn(accessResultMap);

        // Execute
        service.offerAll(sessionId, newUrlList);

        // Verify

    }

    // Happy path: overlaps delegates to implementation and returns as stubbed
    @Test
    @DisplayName("overlaps returns true then false as stubbed")
    void overlapsReturnsTrueThenFalse() throws Exception {
        when(locator.overlaps(other)).thenReturn(true, false);

        assertTrue(locator.overlaps(other));
        assertFalse(locator.overlaps(other));

        verify(locator, times(2)).overlaps(other);

        // Ensure environment variables are not set (in real scenario)
        // In this test, we expect IOException when project ID is blank
        try {
            conn.connect();
            fail("Should throw IOException when project ID is not set");
        } catch (IOException e) {
            assertTrue(e.getMessage().contains("GCS_PROJECT_ID is blank"));
        }
    }

        // Assert
        assertEquals(2283323396289696982L, value, "serialVersionUID should be stable");
    }

    // Behavior check: toString contains class name and message when present
    @Test
    @DisplayName("toString contains class name and message when provided")
    void toString_containsClassName_and_Message() {
        // Arrange
        String msg = "signature invalid";

    }

    @Test
    void testHasDefaultCredentials_withNonAnonymous() {
        when(mockCredentials.isAnonymous()).thenReturn(false);
        assertTrue(context.hasDefaultCredentials());
    }

    @Test
    void testHasDefaultCredentials_withAnonymous() {
        when(mockCredentials.isAnonymous()).thenReturn(true);
        assertFalse(context.hasDefaultCredentials());
    }

        byte[] data = { 0x01, 0x02 };
        // This constructor call itself should not throw an error, as it's just storing the values.
        // The error should occur when System.arraycopy is called.
        ByteEncodable encodable = new ByteEncodable(data, 1, 2); // off=1, len=2, data.length=2. 1+2 > 2

        byte[] dest = new byte[5];