handler -->> client: HTTP error response
    end
    dep ->> operation: Run dependency, e.g. DB session
    opt raise
        operation -->> dep: Raise Exception (e.g. HTTPException)
        opt handle
            dep -->> dep: Can catch exception, raise a new HTTPException, raise other exception
        end
        handler -->> client: HTTP error response
    end

     * @param <Response> the response type
     * @param action     the action to execute
     * @param request    the action request
     * @return a future for the action response
     */
    @Override
    public <Request extends ActionRequest, Response extends ActionResponse> ActionFuture<Response> execute(
            final ActionType<Response> action, final Request request) {

			}
		}
		return nil, &NetworkError{err}
	}

	// If trace is enabled, dump http request and response,
	// except when the traceErrorsOnly enabled and the response's status code is ok
	if c.TraceOutput != nil && resp.StatusCode != http.StatusOK {
		c.dumpHTTP(req, resp)
	}

	if resp.StatusCode != http.StatusOK {

# Utiliser des dataclasses { #using-dataclasses }

FastAPI est construit au‑dessus de **Pydantic**, et je vous ai montré comment utiliser des modèles Pydantic pour déclarer les requêtes et les réponses.

Mais FastAPI prend aussi en charge l'utilisation de [`dataclasses`](https://docs.python.org/3/library/dataclasses.html) de la même manière :

{* ../../docs_src/dataclasses_/tutorial001_py310.py hl[1,6:11,18:19] *}

        assertEquals(statusCode, response.getHttpStatusCode());
    }

    @Test
    public void testEncoding() {
        CurlResponse response = new CurlResponse();
        String encoding = "UTF-8";

        response.setEncoding(encoding);

        assertEquals(encoding, response.getEncoding());
    }

    @Test
    public void testContentException() {

        assertEquals(0, response.getStatus());
        response.setStatus(404);
        assertEquals(404, response.getStatus());
    }

    @Test
    @DisplayName("Test numEntries getter and setter")
    void testNumEntriesGetterSetter() {
        assertEquals(0, response.getNumEntries());
        response.setNumEntries(10);
        assertEquals(10, response.getNumEntries());
    }

    @Test

        response = new Trans2QueryFSInformationResponse(config, informationLevel);

        assertNotNull(response);
        assertEquals(informationLevel, response.getInformationLevel());
        assertEquals(ServerMessageBlock.SMB_COM_TRANSACTION2, response.getCommand());
        assertEquals(SmbComTransaction.TRANS2_QUERY_FS_INFORMATION, response.getSubCommand());
    }

    @Test

        field.setAccessible(true);
        return field.getInt(response);
    }

    private void setStatus(NetShareEnumResponse response, int value) throws Exception {
        Method method = getSuperclassMethod(response.getClass(), "setStatus", int.class);
        method.setAccessible(true);
        method.invoke(response, value);
    }

        setTreeIdMethod.setAccessible(true);
        setTreeIdMethod.invoke(response, -1);
        assertFalse(response.isValidTid());

        // Test valid TID
        setTreeIdMethod.invoke(response, 100);
        assertTrue(response.isValidTid());

        // Test zero TID (valid)
        setTreeIdMethod.invoke(response, 0);
        assertTrue(response.isValidTid());
    }

    @Test

    call.execute().use { response ->
      val source = response.body.source()
      assertThat(response.header("h1")).isEqualTo("v1")
      assertThat(response.peekTrailers()).isNull()
      assertThat(source.readUtf8()).isEqualTo(responseBody)
      assertThat(response.peekTrailers()).isEqualTo(headersOf("t1", "v2"))
      assertThat(response.peekTrailers()).isEqualTo(headersOf("t1", "v2")) // Idempotent.