assertNull(navigableMap.floorKey(k0()));
    assertNull(navigableMap.ceilingEntry(k0()));
    assertNull(navigableMap.ceilingKey(k0()));
    assertNull(navigableMap.higherEntry(k0()));
    assertNull(navigableMap.higherKey(k0()));
  }

  @CollectionSize.Require(ZERO)
  public void testEmptyMapLast() {
    assertNull(navigableMap.lastEntry());
  }

  @MapFeature.Require(SUPPORTS_REMOVE)

            assertNotNull(ex1);
            assertNull(ex1.getMessage());
            assertNull(ex1.getCause());
        });

        assertDoesNotThrow(() -> {
            SpnegoException ex2 = new SpnegoException("msg", null);
            assertNotNull(ex2);
            assertEquals("msg", ex2.getMessage());
            assertNull(ex2.getCause());
        });

        assertDoesNotThrow(() -> {

        assertNull(dfsResolver.getDc(mockContext, "anyDomain"));
    }

    // Test for resolve method
    @Test
    void testResolve_DfsDisabled() throws CIFSException {
        when(mockConfig.isDfsDisabled()).thenReturn(true);
        assertNull(dfsResolver.resolve(mockContext, "anyDomain", "anyRoot", "anyPath"));
    }

    @Test

        // Expect null message and null cause
        assertNull(e.getMessage());
        assertNull(e.getCause());
    }

    /**
     * Test the constructor with a message.
     */
    @Test
    void testMessageConstructor() {
        String errorMessage = "This is a test error message.";
        PACDecodingException e = new PACDecodingException(errorMessage);

        assertNotNull(queue);
        assertNull(queue.getId());
        assertNull(queue.getSessionId());
        assertNull(queue.getMethod());
        assertNull(queue.getUrl());
        assertNull(queue.getMetaData());
        assertNull(queue.getEncoding());
        assertNull(queue.getParentUrl());
        assertNull(queue.getDepth());
        assertNull(queue.getLastModified());

        assertNotNull(result);
        assertNull(result.getId());
        assertNull(result.getSessionId());
        assertNull(result.getRuleId());
        assertNull(result.getUrl());
        assertNull(result.getParentUrl());
        assertEquals(Constants.OK_STATUS, result.getStatus());
        assertNull(result.getHttpStatusCode());
        assertNull(result.getMethod());
        assertNull(result.getMimeType());

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertNull;

class RepositoryUtilsTest {

    @Test
    void testToArtifactMethodsReturnNullWhenInputParameterIsNull() {
        assertNull(RepositoryUtils.toArtifact((Dependency) null));
        assertNull(RepositoryUtils.toArtifact((Artifact) null));
        assertNull(RepositoryUtils.toArtifact((org.apache.maven.artifact.Artifact) null));
    }

        TransportException exception = new TransportException();

        // Verify the exception is created and has no message
        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());

        // Verify it's an instance of CIFSException
        assertTrue(exception instanceof CIFSException);
    }

    @Test

        Smb2LeaseKey key = leaseManager.requestLease(path, requestedState);
        assertNotNull(leaseManager.getLease(key));

        leaseManager.releaseLease(key);

        assertNull(leaseManager.getLease(key));
        assertNull(leaseManager.getLeaseByPath(path));
    }

    @Test
    @DisplayName("Should get lease by path")
    void testGetLeaseByPath() {
        String path = "/share/document.doc";

        assertEquals(expectedStatus, ex.getNtStatus(), "status should map based on code");
        assertNull(ex.getCause(), "cause must be null for int constructor");
        assertNull(ex.getRootCause(), "rootCause must be null for int constructor");
    }

    /**
     * Validate message-only constructor with both null and empty messages.
     */