assertEquals(2, copy.size());
    assertSame(copy, copy.iterator().next().member);
  }

  /*
   * The behavior of toString() and iteration is tested by LinkedHashMultiset,
   * which shares a lot of code with HashMultiset and has deterministic
   * iteration order.
   */

# Plantillas { #templates }

Puedes usar cualquier motor de plantillas que desees con **FastAPI**.

Una elección común es Jinja2, el mismo que usa Flask y otras herramientas.

Hay utilidades para configurarlo fácilmente que puedes usar directamente en tu aplicación de **FastAPI** (proporcionadas por Starlette).

## Instala dependencias { #install-dependencies }

import org.ietf.jgss.GSSName;
import org.ietf.jgss.Oid;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.mockito.Mock;

import org.mockito.quality.Strictness;

/**
 * Tests for SmbTreeHandle interface.
 * This test class uses Mockito to create a mock implementation of the SmbTreeHandle interface.
 * Each method of the interface is tested to ensure it behaves as expected.
 */
@ExtendWith(MockitoExtension.class)
@MockitoSettings(strictness = Strictness.LENIENT)
class SmbTreeHandleTest {

    @Mock
    private SmbTreeHandle smbTreeHandle;

        private
        fun openJarFile(file: Path): ZipInputStream {
            return ZipInputStream(Files.newInputStream(file))
        }
    }

    /**
     * Implementation code that can be unit-tested.
     *
     * <p>Visible for testing.</p>
     */
    class Implementation(private val excludes: List<String>, private val includes: List<String>) {
        fun collectPackages(files: Iterable<Path>): Trie {

        SessionScope sessionScope = container.lookup(SessionScope.class);
        sessionScope.enter();
        sessionScope.seed(MavenSession.class, msession);
        sessionScope.seed(InternalMavenSession.class, iSession);
        sessionScope.seed(Session.class, iSession);
    }

Таким образом, его схема появится в интерфейсе документации API:

<img src="/img/tutorial/dataclasses/image01.png">

## Dataclasses во вложенных структурах данных { #dataclasses-in-nested-data-structures }

Вы также можете комбинировать `dataclasses` с другими аннотациями типов, чтобы создавать вложенные структуры данных.

import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;

/**
 * Tests for {@link FluentFuture}. The tests cover only the basics for the API. The actual logic is
 * tested in {@link FuturesTest}.
 */
@NullMarked
@GwtCompatible
public class FluentFutureTest extends TestCase {
  @SuppressWarnings({"deprecation", "InlineMeInliner"}) // test of a deprecated method

An instance is created at the start of a Gradle invocation and discarded at the end of that invocation.

The build session state also includes "cross session" state that is shared with any "nested" sessions that need to be created.
This only happens when the `GradleBuild` task is used. You can mostly ignore the distinction between "cross session" and "build session" state.

### Build tree state

![editor support](https://fastapi.tiangolo.com/img/pycharm-completion.png)


Daha önceden düşünüp en imkansız diyebileceğin durumlarda bile otomatik tamamlama alacaksın, örnek olarak `price` JSON body içerisinde (nested bir JSON body de olabilirdi.) direkt olarak istekten geliyor, bu durumda bile oto-tammalama sağlıyor.