为此，要在 `with` 语句中使用 `TestClient` 连接 WebSocket。

```Python hl_lines="27-31"
{!../../docs_src/app_testing/tutorial002.py!}
```

/// note | "笔记"

更多细节详见 <a href="https://www.starlette.io/testclient/#testing-websocket-sessions" class="external-link" target="_blank">Starlette 官档 - 测试 WebSockets</a>。

import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Provides utility methods for working with character streams.
 *
 * <p>Some of the methods in this class take arguments with a generic type of {@code Readable &
 * Closeable}. A {@link java.io.Reader} implements both of those interfaces. Similarly for {@code
 * Appendable & Closeable} and {@link java.io.Writer}.
 *

 * basic statistics over all the values added so far. This class is not thread safe.
 *
 * @author Pete Gillin
 * @since 20.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class PairedStatsAccumulator {

  // These fields must satisfy the requirements of PairedStats' constructor as well as those of the
  // stat methods of this class.

import org.opensearch.index.query.BoolQueryBuilder;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

import jakarta.servlet.http.HttpServletRequest;

public class GeoInfo {

    private QueryBuilder builder;

    public GeoInfo(final HttpServletRequest request) {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();

import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

public class FileConfigService extends FessAppService {

    @Resource
    protected FileConfigBhv fileConfigBhv;

    @Resource
    protected FileAuthenticationBhv fileAuthenticationBhv;

    @Resource

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;

import io.restassured.path.json.JsonPath;

@Tag("it")
public class ReqHeaderTests extends CrudTestBase {

    private static final String NAME_PREFIX = "reqHeaderTest_";
    private static final String API_PATH = "/api/admin/reqheader";

 */
@GwtCompatible
@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@ElementTypesAreNonnullByDefault
public class MultimapSizeTester<K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractMultimapTester<K, V, Multimap<K, V>> {

  public void testSize() {
    int expectedSize = getNumElements();

import com.google.caliper.Benchmark;
import com.google.caliper.Param;

/**
 * Microbenchmark for {@link com.google.common.base.Strings#repeat}
 *
 * @author Mike Cripps
 */
public class StringsRepeatBenchmark {
  @Param({"1", "5", "25", "125"})
  int count;

  @Param({"1", "10"})
  int length;

  private String originalString;

  @BeforeExperiment
  void setUp() {

 *
 * <p>Parameters for the benchmark are:
 *
 * <ul>
 *   <li>size: The length of the byte array to hash.
 * </ul>
 *
 * @author Colin Decker
 */
public class ChecksumBenchmark {

  // Use a constant seed for all of the benchmarks to ensure apples to apples comparisons.
  private static final int RANDOM_SEED = new Random().nextInt();

  @Param({"10", "1000", "100000", "1000000"})

import com.google.caliper.Benchmark;
import com.google.caliper.Param;
import java.math.BigInteger;

/**
 * Benchmarks for the non-rounding methods of {@code BigIntegerMath}.
 *
 * @author Louis Wasserman
 */
public class BigIntegerMathBenchmark {
  private static final int[] factorials = new int[ARRAY_SIZE];
  private static final int[] slowFactorials = new int[ARRAY_SIZE];
  private static final int[] binomials = new int[ARRAY_SIZE];