inputList.clear();
        assertEquals(2, notifications.size());

        // Try to modify returned list - behavior depends on implementation
        // This tests that the implementation properly handles list modifications
        try {
            notifications.clear();
            // If this succeeds, the implementation allows modification
            assertTrue(notifications.isEmpty());

// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

    //                                                                        Small Helper
    //                                                                        ============

    /**
     * Verifies that the current CRUD mode matches the expected mode, throwing a validation error if not.
     *
     * @param crudMode   the actual CRUD mode value
     * @param expectedMode the expected CRUD mode value
     */

        assertNotNull(doubleFields);
        assertEquals(0, doubleFields.length);
    }

    // Test configuration key constants
    public void test_configKeyConstants() {
        // Verify that constants are properly defined
        assertNotNull(FessConfig.DOMAIN_TITLE);
        assertEquals("domain.title", FessConfig.DOMAIN_TITLE);

        assertNotNull(FessConfig.search_engine_TYPE);

    assertEquals(
        com.google.common.base.Optional.of("2"),
        generator.generateFresh(new TypeToken<com.google.common.base.Optional<String>>() {}));
    // Test that the first generated instance for different cgcb.Optional<T> is always absent().
    // Having generated cgcb.Optional<String> instances doesn't prevent absent() from being
    // generated for other cgcb.Optional types.

        testConfig.disallowCompound = customDisallow;

        testConfig.initDefaults();

        assertEquals(customDisallow, testConfig.disallowCompound);
    }

    /**
     * Testable subclass that exposes the default constructor
     */
    private static class TestableBaseConfiguration extends BaseConfiguration {
        TestableBaseConfiguration() throws CIFSException {
            super(true);
        }

    }

    @Test
    @DisplayName("readPacketType with special stream returning -1 should return -1")
    void testReadPacketTypeSpecialStream() throws IOException {
        // Create a mock stream that returns exactly -1 on first read (special case)
        when(mockInputStream.read(any(byte[].class), anyInt(), anyInt())).thenReturn(-1); // Immediate EOF

        byte[] buffer = new byte[10];

        assertTrue(testTransformer.getName().startsWith("thread"));
    }

    /**
     * Test inheritance behavior
     */
    public void test_inheritanceBehavior() {
        // Test that subclasses inherit name management
        TestTransformer transformer1 = new TestTransformer();
        NameTrackingTransformer transformer2 = new NameTrackingTransformer();

        transformer1.setName("transformer1");

            assertNotNull(e.getCause());
            assertTrue(e.getCause() instanceof IllegalArgumentException);
        }
    }

    /**
     * Test exception in method that declares throws
     */
    public void test_exceptionInMethod() {
        try {
            methodThatThrowsException();
            fail("Should have thrown CrawlerSystemException");