}

    @Test
    @DisplayName("Test with null buffer in read methods")
    void testReadMethodsWithNullBuffer() {
        trans2SetFileInfo = new Trans2SetFileInformation(config, TEST_FID, mockFileInfo);

        // All read methods should handle null buffer gracefully
        assertEquals(0, trans2SetFileInfo.readSetupWireFormat(null, 0, 0));

    }

    @Test
    @DisplayName("Should handle null negotiate contexts")
    void testNullNegotiateContexts() throws Exception {
        // Given
        setResponseAsReceived(response);
        setPrivateField(response, "dialectRevision", 0x0311);

        NegotiateContextResponse[] contexts = new NegotiateContextResponse[] { null, createValidPreauthResponse(), null };

    }

    // Test validation with valid cron expressions
    public void test_validCronExpressions() {
        TestBean bean = new TestBean();

        // Test null value (should be valid)
        bean.setCronExpression(null);
        Set<ConstraintViolation<TestBean>> violations = validator.validate(bean);
        assertTrue(violations.isEmpty());

        // Test empty string (should be valid)

        assertEquals(0, response.getDataCount());
    }

    @Test
    @DisplayName("Test entry management")
    void testEntryManagement() {
        // Test with null entries
        response.setResults(null);
        assertNull(response.getResults());

        // Test with empty entries
        FileEntry[] emptyEntries = new FileEntry[0];
        response.setResults(emptyEntries);

        default -> "0x" + Hexdump.toHexString(questionType, 4);
        };
        recordTypeString = switch (recordType) {
        case A -> "A";
        case NS -> "NS";
        case NULL -> "NULL";
        case NB -> "NB";
        case NBSTAT -> "NBSTAT";
        default -> "0x" + Hexdump.toHexString(recordType, 4);
        };

      Collection<Subscriber> eventMethodsInListener = entry.getValue();

      CopyOnWriteArraySet<Subscriber> eventSubscribers = subscribers.get(eventType);

      if (eventSubscribers == null) {
        CopyOnWriteArraySet<Subscriber> newSet = new CopyOnWriteArraySet<>();
        eventSubscribers =
            MoreObjects.firstNonNull(subscribers.putIfAbsent(eventType, newSet), newSet);
      }

        default -> "0x" + Hexdump.toHexString(this.questionType, 4);
        };
        recordTypeString = switch (this.recordType) {
        case A -> "A";
        case NS -> "NS";
        case NULL -> "NULL";
        case NB -> "NB";
        case NBSTAT -> "NBSTAT";
        default -> "0x" + Hexdump.toHexString(this.recordType, 4);
        };

        }

        @Test
        @DisplayName("Should handle null expiration")
        void testNullExpiration() {
            Long expiration = 1000L;
            echoResponse.setExpiration(expiration);
            assertEquals(expiration, echoResponse.getExpiration());

            echoResponse.setExpiration(null);

            assertNull(echoResponse.getExpiration());
        }
    }

        }
    }

    public void test_execute_withNullQuery() {
        // Test that execute handles null query
        QueryContext context = new QueryContext("test", false);

        try {
            boostQueryCommand.execute(context, null, 1.0f);
            fail("Should have thrown exception");
        } catch (Exception e) {

    assertSame(toBeSupplied, objectSupplier.get()); // idempotent
  }

  public void testOfInstanceSuppliesNull() {
    Supplier<@Nullable Integer> nullSupplier = Suppliers.ofInstance(null);
    assertNull(nullSupplier.get());
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread
  @SuppressWarnings("DoNotCall")
  public void testExpiringMemoizedSupplierThreadSafe() throws Throwable {