return object : ForwardingSource(source) {
            @Throws(IOException::class)
            override fun close() {
              closed.set(true)
              super.close()
            }
          }.buffer()
        }
      }
    assertThat(body.string()).isEqualTo("hello")
    assertThat(closed.get()).isTrue()
  }

  @Test
  fun readerEmpty() {

      byteCount: Long,
    ): Long {
      require(byteCount >= 0L) { "byteCount < 0: $byteCount" }
      check(!closed) { "closed" }
      if (bytesRemaining == 0L) return -1

      val read = super.read(sink, minOf(bytesRemaining, byteCount))
      if (read == -1L) {
        carrier.noNewExchanges() // The server didn't supply the promised content length.
        val e = ProtocolException("unexpected end of stream")

          override fun close() {
            synchronized(this@Cache) {
              if (done) return
              done = true
              writeSuccessCount++
            }
            super.close()
            editor.commit()
          }
        }
    }

    override fun abort() {
      synchronized(this@Cache) {
        if (done) return
        done = true
        writeAbortCount++

        var first = true

        override fun createSocket(): Socket {
          if (first) {
            first = false
            firstConnectLatch.await()
          }
          return super.createSocket()
        }
      }

    client =
      client.newBuilder()
        .protocols(listOf(Protocol.H2_PRIOR_KNOWLEDGE))
        .socketFactory(socketFactory)
        .addNetworkInterceptor(

    ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS, SynchronousQueue()) {
    private val exceptions: BlockingQueue<Exception> = LinkedBlockingQueue()

    override fun execute(runnable: Runnable) {
      super.execute {
        try {
          runnable.run()
        } catch (e: Exception) {
          exceptions.add(e)
        }
      }
    }

    fun takeException(): Exception {

        override fun contains(element: Protocol?): Boolean {
          if (element == null) throw NullPointerException()
          return super.contains(element)
        }

        override fun indexOf(element: Protocol?): Int {
          if (element == null) throw NullPointerException()
          return super.indexOf(element)
        }
      } as List<Protocol>
    val client =
      OkHttpClient.Builder()

      override fun sink(
        file: Path,
        mustCreate: Boolean,
      ): Sink {
        file.parent?.let {
          createDirectories(it)
        }
        return super.sink(file, mustCreate)
      }
    }

  /** The maximum number of bytes that this cache should use to store its data. */
  @get:Synchronized @set:Synchronized
  var maxSize: Long = maxSize
    set(value) {

            // and resetting the stream.
            duplexResponseSent.await()
          } catch (e: InterruptedException) {
            throw AssertionError()
          }
          super.responseHeadersEnd(call, response)
        }
      }
    client =
      client.newBuilder()
        .eventListener(listener)
        .build()
    val body =
      MockStreamHandler()