assertThat(server.requestCount).isEqualTo(1)
    response.body.close()
  }

  @Test
  fun nonHexChunkSize() {
    server.enqueue(
      MockResponse.Builder()
        .body("5\r\nABCDE\r\nG\r\nFGHIJKLMNOPQRSTU\r\n0\r\n\r\n")
        .clearHeaders()
        .addHeader("Transfer-encoding: chunked")
        .build(),
    )
    assertFailsWith<IOException> {

FBC3..FBD2    ; disallowed                             # NA   <reserved-FBC3>..<reserved-FBD2>
FBD3..FBD6    ; mapped                 ; 06AD          # 1.1  ARABIC LETTER NG ISOLATED FORM..ARABIC LETTER NG MEDIAL FORM
FBD7..FBD8    ; mapped                 ; 06C7          # 1.1  ARABIC LETTER U ISOLATED FORM..ARABIC LETTER U FINAL FORM