val inputStream = response.body.byteStream()
    assertThat(readAscii(inputStream, 3)).isEqualTo("ABC")
    assertThat(inputStream.read()).isEqualTo(-1)
    // throws IOException in Gingerbread.
    assertThat(inputStream.read()).isEqualTo(-1)
  }

  @Test
  fun getOutputStreamOnGetFails() {
    assertFailsWith<IllegalArgumentException> {
      Request.Builder()