)

    assertThat(parts.nextPart()).isNotNull()
    assertThat(parts.nextPart()).isNull()
    assertThat(parts.nextPart()).isNull()
  }

  @Test fun `empty source`() {
    val parts =
      MultipartReader(
        boundary = "simple boundary",
        source = Buffer(),
      )

    assertFailsWith<EOFException> {
      parts.nextPart()
    }
  }

  request.url(url)

  data?.let {
    request.method(requestMethod, it.toRequestBody(mediaType()))
  }

  for (header in headers.orEmpty()) {
    val parts = header.split(':', limit = 2)
    if (!isSpecialHeader(parts[0])) {
      request.header(parts[0], parts[1])
    }
  }
  referer?.let {
    request.header("Referer", it)
  }
  request.header("User-Agent", userAgent)

  return request.build()
}

import okio.Source
import okio.Timeout
import okio.buffer

/**
 * Reads a stream of [RFC 2046][rfc_2046] multipart body parts. Callers read parts one-at-a-time
 * until [nextPart] returns null. After calling [nextPart] any preceding parts should not be read.
 *
 * Typical use loops over the parts in sequence:
 *
 * ```kotlin
 * val response: Response = call.execute()
 * val multipartReader = MultipartReader(response.body!!)
 *

    level = DeprecationLevel.ERROR,
  )
  fun size(): Int = size

  @JvmName("-deprecated_parts")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "parts"),
    level = DeprecationLevel.ERROR,
  )
  fun parts(): List<Part> = parts

  @Throws(IOException::class)
  override fun contentLength(): Long {
    var result = contentLength
    if (result == -1L) {

        if (line.isEmpty() || line.startsWith("#")) continue

        var i = 0
        val parts = line.split(Regex(" ")).toTypedArray()

        val element = WebPlatformUrlTestData()
        element.input = unescape(parts[i++])

        val base = if (i < parts.size) parts[i++] else null
        element.base =
          when {
            base == null || base.isEmpty() -> list[list.size - 1].base

    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)

    val type: MediaType = multipartBody.type()
    val boundary: String = multipartBody.boundary()
    val size: Int = multipartBody.size()
    val parts: List<MultipartBody.Part> = multipartBody.parts()
  }

  @Test @Disabled
  fun multipartBodyPart() {
    val multipartBody: MultipartBody = MultipartBody.Builder().build()
    val part: MultipartBody.Part = multipartBody.part(0)

    }

    when {
      secondSpace != -1 && firstSpace == CLEAN.length && line.startsWith(CLEAN) -> {
        val parts =
          line.substring(secondSpace + 1)
            .split(' ')
        entry.readable = true
        entry.currentEditor = null
        entry.setLengths(parts)
      }

      secondSpace == -1 && firstSpace == DIRTY.length && line.startsWith(DIRTY) -> {

    val type: MediaType = multipartBody.type
    val boundary: String = multipartBody.boundary
    val size: Int = multipartBody.size
    val parts: List<MultipartBody.Part> = multipartBody.parts
    val part: MultipartBody.Part = multipartBody.part(0)
    val contentType: MediaType = multipartBody.contentType()
    val contentLength: Long = multipartBody.contentLength()

 * }
 * ```
 *
 * which prints:
 *
 * ```
 * q: cute #puppies
 * f: images
 * ```
 *
 * In addition to composing URLs from their component parts and decomposing URLs into their
 * component parts, this class implements relative URL resolution: what address you'd reach by
 * clicking a relative link on a specified page. For example:
 *
 * ```java