# Security Tools

When you need to declare dependencies with OAuth2 scopes you use `Security()`.

But you still need to define what is the dependable, the callable that you pass as a parameter to `Depends()` or `Security()`.

There are multiple tools that you can use to create those dependables, and they get integrated into OpenAPI so they are shown in the automatic docs UI, they can be used by automatically generated clients and SDKs, etc.

# `UploadFile` class

You can define *path operation function* parameters to be of the type `UploadFile` to receive files from the request.

You can import it directly from `fastapi`:

```python
from fastapi import UploadFile
```

::: fastapi.UploadFile
    options:
        members:
            - file
            - filename
            - size
            - headers
            - content_type
            - read

    @Test
    void testToString() {
        // Create a mock DfsReferralData object
        DfsReferralData mockData = mock(DfsReferralData.class);
        String expectedToString = "Mock DfsReferralData";

        // Define the behavior of the mock's toString() method
        when(mockData.toString()).thenReturn(expectedToString);

        // Create a DfsReferral instance with the mock data

import org.lastaflute.web.validation.Required;

/**
 * Form for uploading search request files to the Fess search engine.
 * This form is used in the admin interface to upload search request configuration files
 * that define search behaviors and request handling.
 */
public class UploadForm {

    /**
     * The multipart file containing the search request configurations to be uploaded.

        // Set the deferred field directly since it's a public field, not a method
        mockNdrBuffer.deferred = mockDeferredBuffer;
        lenient().when(mockNdrBuffer.derive(anyInt())).thenReturn(mockDeferredBuffer);
        lenient().when(mockDeferredBuffer.derive(anyInt())).thenReturn(mockDeferredBuffer);
    }

    @Test
    void testGetSyntax() {
        String syntax = srvsvc.getSyntax();

* response data injection systems
* etc.

## Simple and Powerful { #simple-and-powerful }

Although the hierarchical dependency injection system is very simple to define and use, it's still very powerful.

You can define dependencies that in turn can define dependencies themselves.

Sehen wir uns nun an, wie Sie damit eine benutzerdefinierte Response zurückgeben können.

Nehmen wir an, Sie möchten eine <a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a>-Response zurückgeben.

Sie könnten Ihren XML-Inhalt als String in eine `Response` einfügen und sie zurückgeben:

/**
 * Form class for editing mapping dictionary entries in the admin interface.
 * This form extends CreateForm to include fields necessary for updating existing mapping dictionary entries.
 * Mapping dictionaries define field mappings and transformations during the indexing process.
 *
 */
public class EditForm extends CreateForm {

    /**
     * Creates a new EditForm instance.
     */
    public EditForm() {

 */
@DisplayName("Credentials Interface Tests")
class CredentialsTest extends BaseTest {

    @Mock
    private Credentials mockCredentials;

    @Test
    @DisplayName("Should define interface methods")
    void testCredentialsInterface() {
        // Verify interface methods exist
        assertDoesNotThrow(() -> {
            mockCredentials.unwrap(Credentials.class);

 */
@DisplayName("Decodable Interface Tests")
class DecodableTest extends BaseTest {

    @Mock
    private Decodable mockDecodable;

    @Test
    @DisplayName("Should define decode method")
    void testDecodeMethod() throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[10];
        int bufferIndex = 0;
        int len = 10;