void shouldImplementFileSystemInformation() {
            assertTrue(FileSystemInformation.class.isAssignableFrom(FileFsSizeInformation.class));
        }

        @Test
        @DisplayName("Should return correct file system information class")
        void shouldReturnCorrectFileSystemInformationClass() {
            assertEquals(FileSystemInformation.FS_SIZE_INFO, fileFsSizeInfo.getFileSystemInformationClass());
        }
    }

        sb = new StringBuffer();
        ace.appendCol(sb, "longer string", 5);
        assertEquals("longer string", sb.toString());
    }

    @Test
    @DisplayName("Test getFlags returns correct value")
    void testGetFlags() {
        ace.flags = 0x00;
        assertEquals(0x00, ace.getFlags());

        ace.flags = 0xFF;
        assertEquals(0xFF, ace.getFlags());

You will see the automatic API docs for the sub-application, including only its own _path operations_, all under the correct sub-path prefix `/subapi`:

<img src="/img/tutorial/sub-applications/image02.png">

If you try interacting with any of the two user interfaces, they will work correctly, because the browser will be able to talk to each specific app or sub-app.

### Technical Details: `root_path` { #technical-details-root-path }

@DisplayName("ACE Interface Comprehensive Tests")
class ACETest {

    @Nested
    @DisplayName("File Access Constants Tests")
    class FileAccessConstantsTests {

        @Test
        @DisplayName("Should have correct values for file access constants")
        void shouldHaveCorrectFileAccessConstants() {
            // Basic file operations (bits 0-8)
            assertEquals(0x00000001, ACE.FILE_READ_DATA, "FILE_READ_DATA should be 0x00000001");

    }

    /**
     * Test method for {@link NtlmHttpServletRequest#getUserPrincipal()}.
     * Verifies that the method returns the correct principal object.
     */
    @Test
    void testGetUserPrincipal() {
        // Act: Call the method under test
        Principal actualPrincipal = ntlmRequest.getUserPrincipal();

            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header X-NginX-Proxy true;

            # This is necessary to pass the correct IP to be hashed
            real_ip_header X-Real-IP;

            proxy_connect_timeout 300;
            
            # To support websocket
            proxy_http_version 1.1;

import org.junit.jupiter.api.Test;

class NdrExceptionTest {

    /**
     * Test the constructor with a message.
     * Ensures that the exception is created with the correct message.
     */
    @Test
    void testConstructorWithMessage() {
        String testMessage = "This is a test message for NdrException.";
        NdrException exception = new NdrException(testMessage);

        BoolQueryBuilder boolQueryBuilder = (BoolQueryBuilder) result;
        // BooleanQueryCommand doesn't seem to apply boost correctly,
        // so we'll just check that it has clauses
        assertTrue(boolQueryBuilder.boost() > 0);
        // Check that the boolean query has the correct number of clauses
        assertFalse(boolQueryBuilder.must().isEmpty());
        assertFalse(boolQueryBuilder.should().isEmpty());

    class GetterTests {

        @Test
        @DisplayName("getPtype should return correct packet type")
        void testGetPtype() {
            message.ptype = DcerpcConstants.RPC_PT_REQUEST;
            assertEquals(DcerpcConstants.RPC_PT_REQUEST, message.getPtype());
        }

        @Test
        @DisplayName("getFlags should return correct flags")
        void testGetFlags() {

        assertFalse(crawlerEngineClient.equals(other));
    }

    // Test getClass method
    public void test_getClass() {
        // Test that getClass returns the correct class
        assertEquals(CrawlerEngineClient.class, crawlerEngineClient.getClass());
    }