assertThat(headersToList(builder)).containsExactly("Content-Length: 3")
    val response = builder.build()
    val body = Buffer()
    response.body!!.writeTo(body)
    assertThat(body.readUtf8()).isEqualTo("ABC")
  }

  @Test
  fun mockResponseAddHeader() {
    val builder =
      MockResponse
        .Builder()
        .clearHeaders()
        .addHeader("Cookie: s=square")

        .onResponseEnd(ShutdownConnection)
        .build(),
    )
    assertFailsWith<ProtocolException> {
      val response = getResponse(newRequest("/"))
      response.body.source().readUtf8(5)
    }
  }

  private fun testConnectViaSocketFactory(useHttps: Boolean) {
    val uselessSocketFactory: SocketFactory =
      object : SocketFactory() {