// Then
        assertEquals(0, request.getCapabilities() & Smb2Constants.SMB2_GLOBAL_CAP_ENCRYPTION);
    }

    @Test
    @DisplayName("Should generate correct dialect list")
    void testDialectGeneration() {
        // Given
        when(mockConfig.getMinimumVersion()).thenReturn(DialectVersion.SMB210);

    @Test
    @DisplayName("Should create correct response")
    void testCreateResponse() {
        // When
        Smb2ChangeNotifyResponse response = request.createResponse(mockContext, request);

        // Then
        assertNotNull(response);
        assertTrue(response instanceof Smb2ChangeNotifyResponse);
    }

    @Test
    @DisplayName("Should calculate correct size")
    void testSize() {
        // When

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

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

## Pin your `fastapi` version { #pin-your-fastapi-version }

The first thing you should do is to "pin" the version of **FastAPI** you are using to the specific latest version that you know works correctly for your application.

For example, let's say you are using version `0.112.0` in your app.

    private TestRequestWithPath testImplementation;

    @BeforeEach
    void setUp() {
        testImplementation = new TestRequestWithPath();
    }

    @Test
    @DisplayName("Test getPath returns correct path")
    void testGetPath() {
        // Test with mock
        String expectedPath = "/share/folder/file.txt";
        when(requestWithPath.getPath()).thenReturn(expectedPath);

            assertEquals(16, result);
            verify(request, times(1)).encode(buffer, 0);
        }

        @Test
        @DisplayName("size() method should return correct size")
        void testSizeMethod() {
            CreateContextRequest request = mock(CreateContextRequest.class);
            when(request.size()).thenReturn(64);

            int size = request.size();

        @Test
        @DisplayName("Should have correct constant values for PreauthIntegrityNegotiateContext")
        void testPreauthConstants() {
            assertEquals(0x1, PreauthIntegrityNegotiateContext.NEGO_CTX_PREAUTH_TYPE);
            assertEquals(0x1, PreauthIntegrityNegotiateContext.HASH_ALGO_SHA512);
        }

        @Test
        @DisplayName("Should have correct constant values for EncryptionNegotiateContext")

        int expectedBytes = 12 + (fileName.length() * 2); // Unicode is 2 bytes per char
        assertEquals(expectedBytes, bytesRead);
    }

    @Test
    @DisplayName("Test getAction returns correct value")
    void testGetAction() throws SMBProtocolDecodingException {
        int expectedAction = FileNotifyInformation.FILE_ACTION_RENAMED_NEW_NAME;

        }
    }

    @Nested
    @DisplayName("Size Calculation Tests")
    class SizeTests {

        @ParameterizedTest
        @DisplayName("Should calculate correct size for various path lengths")
        @CsvSource({ "'', 4", "'a', 6", "'\\\\', 8", "'\\\\server', 20", "'\\\\server\\share', 32", "'\\\\server\\share\\path', 42",

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 }