import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Set;
import junit.framework.TestCase;

/**
 * @author George van den Driessche
 */
public class FeatureUtilTest extends TestCase {
  interface ExampleBaseInterface {
    void behave();
  }

  interface ExampleDerivedInterface extends ExampleBaseInterface {
    void misbehave();

import java.util.Map.Entry;
import java.util.Set;
import junit.framework.TestSuite;

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests a Map implementation.
 *
 * @author George van den Driessche
 */
@GwtIncompatible
public class MapTestSuiteBuilder<K, V>
    extends PerCollectionSizeTestSuiteBuilder<
        MapTestSuiteBuilder<K, V>, TestMapGenerator<K, V>, Map<K, V>, Entry<K, V>> {

* Validálja hogy van egy `item_id` mező a `GET` és `PUT` kérésekben.
* Validálja hogy az `item_id` `int` típusú a `GET` és `PUT` kérésekben.
    * Ha nem akkor látni fogunk egy tiszta hibát ezzel kapcsolatban.
* ellenőrzi hogyha van egy opcionális query paraméter `q` névvel (azaz `http://127.0.0.1:8000/items/foo?q=somequery`) `GET` kérések esetén.
    * Mivel a `q` paraméter `= None`-al van deklarálva, ezért opcionális.

import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Set;
import junit.framework.TestCase;

/**
 * @author George van den Driessche
 */
public class FeatureUtilTest extends TestCase {
  interface ExampleBaseInterface {
    void behave();
  }

  interface ExampleDerivedInterface extends ExampleBaseInterface {
    void misbehave();

 *     instance of G should somehow provide an instance of the class under test, plus any other
 *     information required to parameterize the test.
 * @author George van den Driessche
 */
@GwtIncompatible
public abstract class FeatureSpecificTestSuiteBuilder<
    B extends FeatureSpecificTestSuiteBuilder<B, G>, G> {
  @SuppressWarnings("unchecked")
  protected B self() {

******@****.*** http://mail-archives.apache.org/mod_mbox/maven-dev Apache Announce List ******@****.*** ******@****.*** ******@****.*** http://mail-archives.apache.org/mod_mbox/www-announce/ jvanzyl Jason van Zyl ******@****.*** ASF PMC Chair -5 brett Brett Porter ******@****.*** ASF PMC Member +10 evenisse Emmanuel Venisse ******@****.*** ASF PMC Member +1 jdcasey John Casey ******@****.*** ASF PMC Member -5 kenney Kenney Westerhof ******@****.***...

import java.util.Map.Entry;
import java.util.Set;
import junit.framework.TestSuite;

/**
 * Creates, based on your criteria, a JUnit test suite that exhaustively tests a Map implementation.
 *
 * @author George van den Driessche
 */
@GwtIncompatible
public class MapTestSuiteBuilder<K, V>
    extends PerCollectionSizeTestSuiteBuilder<
        MapTestSuiteBuilder<K, V>, TestMapGenerator<K, V>, Map<K, V>, Entry<K, V>> {

 *     instance of G should somehow provide an instance of the class under test, plus any other
 *     information required to parameterize the test.
 * @author George van den Driessche
 */
@GwtIncompatible
public abstract class FeatureSpecificTestSuiteBuilder<
    B extends FeatureSpecificTestSuiteBuilder<B, G>, G> {
  @SuppressWarnings("unchecked")
  protected B self() {

import java.util.SortedSet;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Derived suite generators, split out of the suite builders so that they are available to GWT.
 *
 * @author George van den Driessche
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class DerivedCollectionGenerators {
  public static class MapEntrySetGenerator<K extends @Nullable Object, V extends @Nullable Object>

```Python hl_lines="6"
{!../../../docs_src/first_steps/tutorial001.py!}
```

El `@app.get("/")` le dice a **FastAPI** que la función que tiene justo debajo está a cargo de manejar los requests que van a:

* el path `/`
* usando una <abbr title="an HTTP GET method">operación <code>get</code></abbr>

!!! info "Información sobre `@decorator`"
    Esa sintaxis `@algo` se llama un "decorador" en Python.