// No authorization header for the first request...
    var request = server.takeRequest()
    assertThat(request.headers["Authorization"]).isNull()

    // ...but the three requests that follow requests include an authorization header.
    for (i in 0..2) {
      request = server.takeRequest()
      assertThat(request.requestLine).isEqualTo("GET / HTTP/1.1")
      assertThat(request.headers["Authorization"])

        .build()
    assertFailsWith<IOException> {
      client.newCall(Request.Builder().url(server.url("/0")).build()).execute()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Too many follow-up requests: 21")
    }
  }

  /**
   * We had a bug where we were passing a null route to the authenticator.
   * https://github.com/square/okhttp/issues/3809
   */
  @Test

    assertThat(response1.body.string()).isEqualTo("ABC")
    val response2 = client.newCall(request).execute() // Cached!
    assertThat(response2.body.string()).isEqualTo("ABC")

    // 2 requests + 2 redirects
    assertThat(cache.requestCount()).isEqualTo(4)
    assertThat(cache.networkCount()).isEqualTo(2)
    assertThat(cache.hitCount()).isEqualTo(2)
  }

  @Test
  fun redirectToCachedResult() {