title: Auth, user management and more for your B2B product
    img: https://fastapi.tiangolo.com/img/sponsors/propelauth.png
  - url: https://zuplo.link/fastapi-gh
    title: 'Zuplo: Deploy, Secure, Document, and Monetize your FastAPI'
    img: https://fastapi.tiangolo.com/img/sponsors/zuplo.png
  - url: https://liblab.com?utm_source=fastapi

 * with {@link #where} and types are resolved using {@link #resolveType}.
 *
 * <p>Note that usually type mappings are already implied by the static type hierarchy (for example,
 * the {@code E} type variable declared by class {@code List} naturally maps to {@code String} in
 * the context of {@code class MyStringList implements List<String>}). In such case, prefer to use

////

/// info | Informação

Para saber mais sobre o <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic, verifique a sua documentação</a>.

///

O **FastAPI** é todo baseado em Pydantic.

Você verá muito mais disso na prática no [Tutorial - Guia do usuário](tutorial/index.md){.internal-link target=_blank}.

/// tip | Dica

{* ../../docs_src/app_testing/tutorial002.py hl[27:31] *}

/// note | Nota

Para mais detalhes, confira a documentação do Starlette para <a href="https://www.starlette.io/testclient/#testing-websocket-sessions" class="external-link" target="_blank">testar WebSockets</a>.

/// info

Um mehr über <a href="https://pydantic-docs.helpmanual.io/" class="external-link" target="_blank">Pydantic zu erfahren, schauen Sie sich dessen Dokumentation an</a>.

///

**FastAPI** basiert vollständig auf Pydantic.

Viel mehr von all dem werden Sie in praktischer Anwendung im [Tutorial - Benutzerhandbuch](tutorial/index.md){.internal-link target=_blank} sehen.

/// tip | Tipp

{* ../../docs_src/app_testing/tutorial002.py hl[27:31] *}

/// note | Not

Daha fazla detay için Starlette'in <a href="https://www.starlette.io/staticfiles/" class="external-link" target="_blank">Websockets'i Test Etmek</a> dokümantasyonunu inceleyin.

import java.util.function.Function;
import java.util.function.ToIntFunction;
import java.util.stream.Collector;
import org.jspecify.annotations.Nullable;

/**
 * A {@link Multiset} whose contents will never change, with many other important properties
 * detailed at {@link ImmutableCollection}.
 *
 * <p><b>Grouped iteration.</b> In all current implementations, duplicate elements always appear

        String line;
        final BufferedReader br = new BufferedReader(r);

        while ((line = br.readLine()) != null) {
            line = line.toUpperCase().trim();
            if (line.length() == 0) {
                continue;
            }
            if (line.charAt(0) == '#') {
                if (line.startsWith("#INCLUDE ")) {

import java.util.Collection;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import org.jspecify.annotations.Nullable;

/**
 * A {@link BlockingQueue} which forwards all its method calls to another {@link BlockingQueue}.
 * Subclasses should override one or more methods to modify the behavior of the backing collection
 * as desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

/** Tests for {@link MapIteratorCache} and {@link MapRetrievalCache}. */
@AndroidIncompatible
// TODO(cpovirk): Figure out Android JUnit 4 support. Does it work with Gingerbread? @RunWith?
@RunWith(Parameterized.class)
@NullUnmarked