import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;
import org.lastaflute.core.direction.exception.ConfigPropertyNotFoundException;

public class FessConfigImplTest extends UnitFessTestCase {

    private FessConfigImpl fessConfig;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

        // Create FessConfigImpl with overridden get method for testing

```

### Exception Handling
```java
import org.codelibs.core.exception.*;

// Runtime exception wrappers eliminate try-catch boilerplate
try {
    // Code that might throw checked exceptions
    return ClassUtil.newInstance(className); // Wraps checked exceptions automatically
} catch (ClassNotFoundRuntimeException e) {
    // Handle the wrapped exception

    }
  }

  public void testMakeUninterruptible_untimed_uninterrupted() throws Exception {
    runUntimedInterruptsTest(0);
  }

  public void testMakeUninterruptible_untimed_interrupted() throws Exception {
    runUntimedInterruptsTest(1);
  }

  public void testMakeUninterruptible_untimed_multiplyInterrupted() throws Exception {
    runUntimedInterruptsTest(38);
  }

        assertNotNull(errorHandler, "Error handler should not be null");

        // Test error classification for different exception types
        Exception hardwareError = new RuntimeException("RDMA hardware not supported");
        Exception networkError = new java.io.IOException("Network connection failed");
        Exception timeoutError = new java.net.SocketTimeoutException("Operation timed out");

        // Test fallback logic

    }

    @Test
    public void test_valueOf_invalidName() {
        // Test valueOf with invalid name throws exception
        try {
            SsoResponseType.valueOf("INVALID");
            fail("Expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            // Expected exception
            assertTrue(e.getMessage().contains("INVALID"));
        }
    }

    @Test

        assertEquals("MESSAGE", problem.getMessage());

        problem = new DefaultProblem(null, null, null, -1, -1, new Exception());
        assertEquals("", problem.getMessage());

        problem = new DefaultProblem(null, null, null, -1, -1, new Exception("EXCEPTION MESSAGE"));
        assertEquals("EXCEPTION MESSAGE", problem.getMessage());
    }

    }

    @Test
    void testHelpExecuteReturnsZero() throws Exception {
        UpgradeContext context = createMockContext();

        int result = help.execute(context);

        assertEquals(0, result, "Help goal should return 0 (success)");
    }

    @Test
    void testHelpExecuteDoesNotThrow() throws Exception {
        UpgradeContext context = createMockContext();

    private Artifact projectArtifact;

    @BeforeEach
    @Override
    public void setUp() throws Exception {
        super.setUp();

        projectArtifact = createLocalArtifact("project", "3.0");
    }

    @Override
    protected DefaultRepositorySystemSession initRepoSession() throws Exception {
        DefaultRepositorySystemSession session = super.initRepoSession();

public class SpnegoAuthenticatorTest extends UnitFessTestCase {

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
    }

    @Override
    protected void tearDown(TestInfo testInfo) throws Exception {
        super.tearDown(testInfo);
    }

    @Test
    public void test_authenticatorInstantiation() {

     *
     * @return The location of the problem, never {@code null}.
     */
    String getLocation();

    /**
     * Gets the exception that caused this problem (if any).
     *
     * @return The exception that caused this problem or {@code null} if not applicable.
     */
    Exception getException();

    /**
     * Gets the message that describes this problem.
     *