class ResponseBodyJvmTest {
  @Test
  fun stringEmpty() {
    val body = body("")
    assertThat(body.string()).isEqualTo("")
  }

  @Test
  fun stringLooksLikeBomButTooShort() {
    val body = body("000048")
    assertThat(body.string()).isEqualTo("\u0000\u0000H")
  }

  @Test
  fun stringDefaultsToUtf8() {
    val body = body("68656c6c6f")
    assertThat(body.string()).isEqualTo("hello")
  }

  @Test

          logger.log("--> END ${request.method} (encoded body omitted)")
        } else if (requestBody.isDuplex()) {
          logger.log("--> END ${request.method} (duplex request body omitted)")
        } else if (requestBody.isOneShot()) {
          logger.log("--> END ${request.method} (one-shot body omitted)")
        } else {
          var buffer = Buffer()
          requestBody.writeTo(buffer)

  // the call, but they may be accessed by other threads for duplex requests.

  /** True if this call still has a request body open. */
  private var requestBodyOpen = false

  /** True if this call still has a response body open. */
  private var responseBodyOpen = false

  /** True if there are more exchanges expected for this call. */
  private var expectMoreExchanges = true

    ```kotlin
    val response: Response = call.execute()
    val multipartReader = MultipartReader(response.body!!)

    multipartReader.use {
      while (true) {
        val part = multipartReader.nextPart() ?: break
        process(part.headers, part.body)
      }
    }
    ```

 *  New: `MediaType.parameter()` gets a parameter like `boundary` from a media type like

      }

    fun body(body: Buffer) = body(body.toMockResponseBody())

    fun body(body: MockResponseBody) =
      apply {
        setHeader("Content-Length", body.contentLength)
        this.body = body
      }

    /** Sets the response body to the UTF-8 encoded bytes of [body]. */
    fun body(body: String): Builder = body(Buffer().writeUtf8(body))

    state = STATE_READING_RESPONSE_BODY
    return FixedLengthSource(length)
  }

  private fun newChunkedSource(url: HttpUrl): Source {
    check(state == STATE_OPEN_RESPONSE_BODY) { "state: $state" }
    state = STATE_READING_RESPONSE_BODY
    return ChunkedSource(url)
  }

  private fun newUnknownLengthSource(): Source {
    check(state == STATE_OPEN_RESPONSE_BODY) { "state: $state" }

    applicationLogs
      .assertLogEqual("--> POST $url (3-byte body)")
      .assertLogMatch(Regex("""<-- 200 OK $url \(\d+ms, 0-byte body\)"""))
      .assertNoMoreLogs()
    networkLogs
      .assertLogEqual("--> POST $url http/1.1 (3-byte body)")
      .assertLogMatch(Regex("""<-- 200 OK $url \(\d+ms, 0-byte body\)"""))
      .assertNoMoreLogs()
  }

  @Test
  fun basicResponseBody() {

   * before the entire HTTP response body has been consumed.
   */
  @Throws(IOException::class)
  fun trailers(): Headers = trailersFn()

  /**
   * Peeks up to [byteCount] bytes from the response body and returns them as a new response
   * body. If fewer than [byteCount] bytes are in the response body, the full response body is

        "abc",
      ),
    )
    assertThat(partAbc.body.readUtf8()).isEqualTo("abcd\r\nefgh")

    val partIjk = parts.nextPart()!!
    assertThat(partIjk.headers).isEqualTo(
      headersOf(
        "Content-Type",
        "text/plain; charset=utf-8",
        "Content-ID",
        "ijk",
      ),
    )
    assertThat(partIjk.body.readUtf8()).isEqualTo("ijkl\r\nmnop\r\n")

    assertThat(body.boundary).isEqualTo("123")
    assertThat(body.type).isEqualTo(MultipartBody.MIXED)
    assertThat(body.contentType().toString())
      .isEqualTo("multipart/mixed; boundary=123")
    assertThat(body.parts.size).isEqualTo(1)
    assertThat(body.contentLength()).isEqualTo(33L)
    val buffer = Buffer()
    body.writeTo(buffer)
    assertThat(body.contentLength()).isEqualTo(buffer.size)