SourceSinkFactories.appendingFileCharSinkFactory()));
    suite.addTestSuite(FilesTest.class);
    return suite;
  }

  public void testRoundTripSources() throws Exception {
    File asciiFile = getTestFile("ascii.txt");
    ByteSource byteSource = Files.asByteSource(asciiFile);
    assertSame(byteSource, byteSource.asCharSource(UTF_8).asByteSource(UTF_8));
  }

import java.util.Calendar;
import java.util.Date;
import java.util.Iterator;
import java.util.Locale;
import java.util.NoSuchElementException;

import org.codelibs.core.exception.ClUnsupportedOperationException;
import org.codelibs.core.exception.ParseRuntimeException;
import org.codelibs.core.misc.LocaleUtil;

/**
 * 日付だけを表現するオブジェクトから{@link Date}、{@link Calendar}、{@link java.sql.Date}
 * への変換ユーティリティです。
 * <p>

<img src="/img/tutorial/websockets/image05.png">

## Verbindungsabbrüche und mehreren Clients handhaben

Wenn eine WebSocket-Verbindung geschlossen wird, löst `await websocket.receive_text()` eine `WebSocketDisconnect`-Exception aus, die Sie dann wie in folgendem Beispiel abfangen und behandeln können.

//// tab | Python 3.9+

```Python hl_lines="79-81"
{!> ../../docs_src/websockets/tutorial003_py39.py!}
```

////

import org.dbflute.bhv.readable.EntityRowHandler;
import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.exception.IllegalBehaviorStateException;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.util.DfTypeUtil;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.delete.DeleteRequestBuilder;

import org.dbflute.bhv.readable.EntityRowHandler;
import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.exception.IllegalBehaviorStateException;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.util.DfTypeUtil;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.delete.DeleteRequestBuilder;

    val requestBody =
      object : RequestBody() {
        override fun contentType(): MediaType? = null

        override fun writeTo(sink: BufferedSink) {
          throw IOException("boom") // Despite this exception, 'sink' is healthy.
        }
      }

    val callA =
      client.newCall(
        Request(
          url = server.url("/"),
          body = requestBody,
        ),
      )

  private val server = TestStreams(false, taskFaker, client2Server, server2client)

  @BeforeEach
  fun setUp() {
    client.initWebSocket(random)
    server.initWebSocket(random)
  }

  @AfterEach
  @Throws(Exception::class)
  fun tearDown() {
    client.listener.assertExhausted()
    server.listener.assertExhausted()
    server.source.close()
    client.source.close()
    taskFaker.runTasks()
    server.webSocket!!.tearDown()

import org.dbflute.cbean.coption.CursorSelectOption;
import org.dbflute.cbean.coption.ScalarSelectOption;
import org.dbflute.cbean.coption.StatementConfigCall;
import org.dbflute.cbean.dream.SpecifiedColumn;
import org.dbflute.cbean.exception.ConditionBeanExceptionThrower;
import org.dbflute.cbean.ordering.OrderByBean;
import org.dbflute.cbean.paging.PagingBean;
import org.dbflute.cbean.paging.PagingInvoker;
import org.dbflute.cbean.scoping.AndQuery;

    if (!client.retryOnConnectionFailure) return false

    // We can't send the request body again.
    if (requestSendStarted && requestIsOneShot(e, userRequest)) return false

    // This exception is fatal.
    if (!isRecoverable(e, requestSendStarted)) return false

    // No more routes to attempt.
    if (!call.retryAfterFailure()) return false

    LocalLoadingCache<Object, Object> cache = makeCache(createCacheBuilder(), loader);
    assertSame(loader, cache.localCache.defaultLoader);
  }

  // null parameters test

  public void testNullParameters() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    CacheLoader<Object, Object> loader = identityLoader();
    tester.testAllPublicInstanceMethods(makeCache(createCacheBuilder(), loader));
  }

  // stats tests