## **FastAPI**'s `OAuth2PasswordBearer` { #fastapis-oauth2passwordbearer }

**FastAPI** provides several tools, at different levels of abstraction, to implement these security features.

In this example we are going to use **OAuth2**, with the **Password** flow, using a **Bearer** token. We do that using the `OAuth2PasswordBearer` class.

/// info

        void testInfoQuota() {
            assertEquals(4, Smb2Constants.SMB2_0_INFO_QUOTA, "Quota info level must be 4");
        }

        @Test
        @DisplayName("All info levels should be sequential")
        void testInfoLevelsSequential() {
            assertEquals(Smb2Constants.SMB2_0_INFO_FILE + 1, Smb2Constants.SMB2_0_INFO_FILESYSTEM, "Filesystem should be File + 1");

     * gaps. For example, an insecure TLS connection is capable of negotiating HTTP/2 with ALPN and
     * it also has a regular-looking handshake.
     *
     * **This feature is not supported on Android API levels less than 24.** Prior releases lacked
     * a mechanism to trust some hosts and not others.
     *
     * @param hostname the exact hostname from the URL for insecure connections.
     */

        FileInformation basicInfo = mock(FileInformation.class);
        FileInformation standardInfo = mock(FileInformation.class);
        FileInformation internalInfo = mock(FileInformation.class);

        // Set different levels
        when(basicInfo.getFileInformationLevel()).thenReturn(FileInformation.FILE_BASIC_INFO);
        when(standardInfo.getFileInformationLevel()).thenReturn(FileInformation.FILE_STANDARD_INFO);

   * doubling the table causes no thread to hash to it under
   * expanded mask.  We do not try to detect or remove such cells,
   * under the assumption that for long-running instances, observed
   * contention levels will recur, so the cells will eventually be
   * needed again; and for short-lived ones, it does not matter.
   */

  /**
   * Padded variant of AtomicLong supporting only raw accesses plus CAS. The value field is placed

formats that can be processed by TensorFlow.

These modifications and conversions are handled by a variety of libraries that
have different security properties and provide different levels of confidence
when dealing with untrusted data. Based on the security history of these
libraries we consider that it is safe to work with untrusted inputs for PNG,

## Dependency Injection { #dependency-injection }

Using `BackgroundTasks` also works with the dependency injection system, you can declare a parameter of type `BackgroundTasks` at multiple levels: in a *path operation function*, in a dependency (dependable), in a sub-dependency, etc.

package jcifs.smb1.smb1;

import java.io.UnsupportedEncodingException;
import java.util.Date;

import jcifs.smb1.util.LogStream;

class Trans2FindFirst2Response extends SmbComTransactionResponse {

    // information levels

    static final int SMB_INFO_STANDARD = 1;
    static final int SMB_INFO_QUERY_EA_SIZE = 2;
    static final int SMB_INFO_QUERY_EAS_FROM_LIST = 3;
    static final int SMB_FIND_FILE_DIRECTORY_INFO = 0x101;

        }

        verify(autoCloseTree).close();
    }

    /**
     * Test for unwrap with nested wrapping.
     * Verifies that unwrap works correctly with multiple levels of wrapping.
     */
    @Test
    void testUnwrap_nestedWrapping() {
        // Create a chain of wrapped trees
        CustomSmbTree innerTree = mock(CustomSmbTree.class);

    @ParameterizedTest
    @ValueSource(bytes = { FileInformation.FILE_BASIC_INFO, FileInformation.FILE_STANDARD_INFO, FileInformation.FILE_INTERNAL_INFO })
    @DisplayName("Test readDataWireFormat with different information levels")
    void testReadDataWireFormatWithDifferentLevels(byte infoLevel) throws SMBProtocolDecodingException {
        response = new Trans2QueryPathInformationResponse(mockConfig, infoLevel);