)

    async def __call__(self, request: Request) -> HTTPAuthorizationCredentials | None:
        authorization = request.headers.get("Authorization")
        scheme, credentials = get_authorization_scheme_param(authorization)
        if not (authorization and scheme and credentials):
            if self.auto_error:
                raise self.make_not_authenticated_error()
            else:

    /**
     * Test case for when the 'Authorization' header is missing.
     * Expects the server to respond with a 'WWW-Authenticate: NTLM' header and a 401 status.
     * @throws IOException
     */
    @Test
    public void testAuthenticate_NoAuthorizationHeader() throws IOException {
        // Setup: No "Authorization" header
        when(mockRequest.getHeader("Authorization")).thenReturn(null);

        // Execute

        // This should not throw an exception
        assertDoesNotThrow(() -> ntlmServlet.init(servletConfig));
    }

    /**
     * Test the service method when no Authorization header is present and no session exists.
     * Expects a 401 Unauthorized response with NTLM and Basic authentication challenges.
     * @throws ServletException
     * @throws IOException
     */
    @Test

        }).orElse(null);
    }

    /**
     * Gets the authorization URL for OpenID Connect.
     *
     * @param request the HTTP servlet request
     * @return the authorization URL
     */
    protected String getAuthUrl(final HttpServletRequest request) {
        final String state = UuidUtil.create();

        // Initialize filter first
        initializeFilter();

        // Test request without Authorization header should challenge client
        when(request.getHeader("Authorization")).thenReturn(null);
        when(httpSession.getAttribute("NtlmHttpAuth")).thenReturn(null);

        filter.doFilter(request, response, filterChain);

        )

    async def __call__(self, request: Request) -> str | None:
        authorization = request.headers.get("Authorization")
        if not authorization:
            if self.auto_error:
                raise self.make_not_authenticated_error()
            else:
                return None
        return authorization


class OAuth2PasswordBearer(OAuth2):
    """

  }

  @Test
  fun requestToStringRedactsSensitiveHeaders() {
    val headers =
      Headers
        .Builder()
        .add("content-length", "99")
        .add("authorization", "peanutbutter")
        .add("proxy-authorization", "chocolate")
        .add("cookie", "drink=coffee")
        .add("set-cookie", "accessory=sugar")
        .add("user-agent", "OkHttp")
        .build()
    val request =

  }

  @Test
  fun requestToStringRedactsSensitiveHeaders() {
    val headers =
      Headers
        .Builder()
        .add("content-length", "99")
        .add("authorization", "peanutbutter")
        .add("proxy-authorization", "chocolate")
        .add("cookie", "drink=coffee")
        .add("set-cookie", "accessory=sugar")
        .add("user-agent", "OkHttp")
        .build()
    val request =

        if (response == HTTP_UNAUTHORIZED) {
            authHeader = "WWW-Authenticate";
            authProperty = "Authorization";
        } else {
            authHeader = "Proxy-Authenticate";
            authProperty = "Proxy-Authorization";
        }
        String authorization = null;
        final List methods = (List) getHeaderFields0().get(authHeader);
        if (methods == null) {
            return null;

                authHeader = "WWW-Authenticate";
                this.authProperty = "Authorization";
            } else {
                authHeader = "Proxy-Authenticate";
                this.authProperty = "Proxy-Authorization";
            }
            String authorization = null;
            final List<String> methods = getHeaderFields0().get(authHeader);
            if (methods == null) {