assertSame(tz1, tz2);
        assertSame(FessUserTimeZoneProcessProvider.centralTimeZone, tz1);
    }

    // Test with null RequestManager (edge case)
    public void test_getRequestedTimeZone_withNullRequestManager() {
        // Execute with null request manager
        TimeZone result = provider.getRequestedTimeZone(null);

        SSPContext ctx1 = creds.createContext(mockContext, null, "", null, false);
        assertNotNull(ctx1);
    }

    @Nested
    @DisplayName("getSubject edge cases")
    class SubjectTests {
        @Test
        @DisplayName("returns provided subject")
        void subject_non_null() {
            Subject s = new Subject();

        // Service accessors
        assertEquals("cifs", auth.getService());
        auth.setService("");
        assertEquals("", auth.getService());

        // Lifetime accessors (edge: zero/negative)
        auth.setUserLifeTime(0);
        assertEquals(0, auth.getUserLifeTime());
        auth.setUserLifeTime(-1);
        assertEquals(-1, auth.getUserLifeTime());

        auth.setLifeTime(0);

            assertEquals("smb://server/share/path/filetxt", loc.getCanonicalURL());
            assertFalse(loc.isRoot());
        }
    }

    @Nested
    @DisplayName("Invalid inputs and edge cases")
    class Invalid {
        @Test
        void nullUrlThrows() {
            assertThrows(IllegalArgumentException.class, () -> new DummySmbResourceLocator(null));
        }

        @Test

        // Third invocation
        curtainFinallyHook.hook(assistantDirector);

        // All invocations should complete successfully
        assertTrue(true);
    }

    // Test with null assistant director (edge case)
    public void test_hook_withNullAssistantDirector() {
        // Hook should handle null parameter gracefully
        curtainFinallyHook.hook(null);

        // Verify no NullPointerException is thrown

        assertEquals(0L, response.getOffset(), "Offset should be initialized to 0");
    }

    /* ------------------------------------------------------------------ */
    /* 2. Parameter word reading - happy path & edge cases                */
    /* ------------------------------------------------------------------ */

    /**
     * Provides test cases for {@link SmbComSeekResponse#readParameterWordsWireFormat(byte[], int)}.

        auth.handle(new Callback[] { pc });
        assertEquals("secret", new String(pc.getPassword()));
    }

    @Test
    @DisplayName("handle: empty user/domain edge yields '@' and null password")
    void testHandleWithEmptyUserAndDomainEdge() throws Exception {
        // Default constructor results in empty strings for user and domain, null for password

 * @since 20.0
 */
@Beta
@DoNotMock
public final class GraphBuilder<N> extends AbstractGraphBuilder<N> {

  /** Creates a new instance with the specified edge directionality. */
  private GraphBuilder(boolean directed) {
    super(directed);
  }

  /** Returns a {@link GraphBuilder} for building directed graphs. */
  public static GraphBuilder<Object> directed() {

            assertFalse((writeOnly & ACE.FILE_READ_DATA) != 0, "Write should not include FILE_READ_DATA");
        }
    }

    @Nested
    @DisplayName("Boundary Conditions and Edge Cases")
    class BoundaryConditionsTests {

        @Test
        @DisplayName("Should handle signed/unsigned integer boundaries")
        void shouldHandleSignedUnsignedBoundaries() {

/**
 * Tests for StaticJAASConfiguration.
 *
 * Coverage goals:
 * - Happy path with default and custom options.
 * - Null/empty/ignored name parameter handling.
 * - Null options edge case.
 * - Repeated calls equivalence and instance separation.
 * - Interaction check that passed options are not mutated.
 */
@ExtendWith(MockitoExtension.class)
class StaticJAASConfigurationTest {