.isInstanceOf(NullProxySelector::class.java)
    client =
      OkHttpClient
        .Builder()
        .proxySelector(FakeProxySelector())
        .build()
    assertThat(client.proxy).isNull()
    assertThat(client.proxySelector)
      .isInstanceOf(FakeProxySelector::class.java)
  }

  @Test fun sharesRouteDatabase() {
    val client =
      OkHttpClient
        .Builder()
        .build()

    server.enqueue(MockResponse(body = "abc"))

    // Use a misconfigured proxy to guarantee that the request is retried.
    client =
      client
        .newBuilder()
        .proxySelector(
          FakeProxySelector()
            .addProxy(server2.proxyAddress)
            .addProxy(Proxy.NO_PROXY),
        ).build()
    server2.close()
    val request =
      Request(
        url = server.url("/def"),

    // Enable a misconfigured proxy selector to guarantee that the request is retried.
    client =
      client
        .newBuilder()
        .proxySelector(
          FakeProxySelector()
            .addProxy(server2.proxyAddress)
            .addProxy(Proxy.NO_PROXY),
        ).build()
    server2.close()
    val request =
      Request(
        url = server.url("/"),