import java.util.concurrent.ExecutorService;
import java.util.logging.Level;
import java.util.logging.Logger;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/** Tests for {@link ListenerCallQueue}. */
@NullUnmarked
public class ListenerCallQueueTest extends TestCase {

  private static final ListenerCallQueue.Event<Object> THROWING_EVENT =
      new ListenerCallQueue.Event<Object>() {

import java.util.concurrent.ExecutorService;
import java.util.logging.Level;
import java.util.logging.Logger;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/** Tests for {@link ListenerCallQueue}. */
@NullUnmarked
public class ListenerCallQueueTest extends TestCase {

  private static final ListenerCallQueue.Event<Object> THROWING_EVENT =
      new ListenerCallQueue.Event<Object>() {

<img src="/img/tutorial/security/image12.png">

## 检查用户名

以下是更完整的示例。

使用依赖项检查用户名与密码是否正确。

为此要使用 Python 标准模块 <a href="https://docs.python.org/3/library/secrets.html" class="external-link" target="_blank">`secrets`</a> 检查用户名与密码。

`secrets.compare_digest()` 需要仅包含 ASCII 字符（英语字符）的 `bytes` 或 `str`，这意味着它不适用于像`á`一样的字符，如 `Sebastián`。

为了解决这个问题，我们首先将 `username` 和 `password` 转换为使用 UTF-8 编码的 `bytes` 。

本例中有 3 个查询参数：

* `needy`，必选的 `str` 类型参数
* `skip`，默认值为 `0` 的 `int` 类型参数
* `limit`，可选的 `int` 类型参数

/// tip | 提示

还可以像在[路径参数](path-params.md#_8){.internal-link target=_blank} 中那样使用 `Enum`。

  }

  private final AtomicInteger freshness = new AtomicInteger(1);
  private final ListMultimap<Class<?>, Object> sampleInstances = ArrayListMultimap.create();

  /**
   * The freshness level at which the {@link Empty @Empty} annotated method was invoked to generate
   * instance.
   */
  private final Map<Type, Integer> emptyInstanceGenerated = new HashMap<>();

   witnesses, please include them as well.
 * Your account of what occurred, and if you believe the incident is ongoing. If there is a publicly
   available record (e.g. a mailing list archive or a public IRC logger), please include a link.
 * Any additional information that may be helpful.

After filing a report, a representative from the Square Code of Conduct committee will contact you

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link ImmutableClassToInstanceMap}.
 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class ImmutableClassToInstanceMapTest extends TestCase {
  @AndroidIncompatible // test-suite builders

import com.google.common.collect.testing.features.MapFeature;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.Set;
import org.junit.Ignore;

/**
 * Tests {@link java.util.Map#entrySet}.
 *
 * @author Louis Wasserman
 * @param <K> The key type of the map implementation under test.
 * @param <V> The value type of the map implementation under test.
 */
@GwtCompatible

Usa una dependencia para comprobar si el nombre de usuario y la contraseña son correctos.

Para esto, usa el módulo estándar de Python <a href="https://docs.python.org/3/library/secrets.html" class="external-link" target="_blank">`secrets`</a> para verificar el nombre de usuario y la contraseña.

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Test cases for {@link SettableFuture}.
 *
 * @author Sven Mawson
 */
@NullUnmarked
public class SettableFutureTest extends TestCase {

  private SettableFuture<String> future;
  private ListenableFutureTester tester;