import okio.BufferedSource
import okio.ByteString
import okio.ByteString.Companion.decodeHex
import okio.ByteString.Companion.encodeUtf8
import okio.GzipSink
import okio.buffer
import org.junit.jupiter.api.Test

class Http2Test {
  val frame = Buffer()
  val reader = Http2Reader(frame, false)
  val expectedStreamId = 15

  @Test fun unknownFrameTypeSkipped() {
    writeMedium(frame, 4) // has a 4-byte field

import java.util.Spliterators;
import java.util.function.IntConsumer;
import java.util.stream.IntStream;
import javax.annotation.CheckForNull;

/**
 * An immutable array of {@code int} values, with an API resembling {@link List}.
 *
 * <p>Advantages compared to {@code int[]}:
 *
 * <ul>
 *   <li>All the many well-known advantages of immutability (read <i>Effective Java</i>, third
 *       edition, Item 17).

 * the same single element. The total number of occurrences of an element in a multiset is called
 * the <i>count</i> of that element (the terms "frequency" and "multiplicity" are equivalent, but
 * not used in this API). Since the count of an element is represented as an {@code int}, a multiset
 * may never contain more than {@link Integer#MAX_VALUE} occurrences of any one element.
 *

 *       However, utilities that <i>use</i> that executor have the ability to interrupt tasks
 *       running on it. This class, by contrast, does not expose an {@code Executor} API.)
 * </ul>
 *
 * <p>If you don't need the features of this class, you may prefer {@code newSequentialExecutor} for
 * its simplicity and ability to accommodate interruption.
 *
 * @since 26.0
 */

* **Converter dados**: da solicitação para o tipo necessário.
* **Validar dados**: provenientes de cada solicitação:
    * Gerando **erros automáticos** retornados ao cliente quando os dados são inválidos.
* **Documentar** a API usando OpenAPI:
    * que é usado pelas interfaces de usuário da documentação interativa automática.

{!../../docs_src/settings/app03/config.py!}
```

在这里，我们在 Pydantic 的 `Settings` 类中创建了一个名为 `Config` 的类，并将 `env_file` 设置为我们想要使用的 dotenv 文件的文件名。

/// tip

`Config` 类仅用于 Pydantic 配置。您可以在<a href="https://docs.pydantic.dev/latest/api/config/" class="external-link" target="_blank">Pydantic Model Config</a>中阅读更多相关信息。

///

### 使用 `lru_cache` 仅创建一次 `Settings`

从磁盘中读取文件通常是一项耗时的（慢）操作，因此您可能希望仅在首次读取后并重复使用相同的设置对象，而不是为每个请求都读取它。

但是，每次执行以下操作：

 *       returns {@code true}.
 *   <li>A class which implements {@code Comparable<UnrelatedType>} is very broken, and will cause
 *       undefined horrible things to happen in {@code Range}. For now, the Range API does not
 *       prevent its use, because this would also rule out all ungenerified (pre-JDK1.5) data types.
 *       <b>This may change in the future.</b>
 * </ul>
 *
 * <h3>Other notes</h3>
 *
 * <ul>

   * in the subdomain list. The number of levels must be non-negative, and less than {@code N-1},
   * where {@code N} is the number of parts in the domain.
   *
   * <p>TODO: Reasonable candidate for addition to public API.
   */
  private InternetDomainName ancestor(int levels) {
    ImmutableList<String> ancestorParts = parts.subList(levels, parts.size());

     * a fan of that: What if we someday implement (presumably to be enabled during tests only)
     * bytecode rewriting that checks for any null value that passes through an API with a
     * known-non-null type? But that particular problem might not arise here, since we're not
     * actually reading from the fields in any case in which they might be null (as proven by the

* **Convert data**: from the request to the required type.
* **Validate data**: coming from each request:
    * Generating **automatic errors** returned to the client when the data is invalid.
* **Document** the API using OpenAPI:
    * which is then used by the automatic interactive documentation user interfaces.