dispatcher.maxRequests = 1
    client.newCall(request1).enqueue(callback)
    executor.shutdown()
    client.newCall(request2).enqueue(callback)
    dispatcher.maxRequests = 2 // Trigger promotion.
    callback.await(request2.url).assertFailure(InterruptedIOException::class.java)
    assertThat(listener.recordedEventTypes())
      .containsExactly("CallStart", "CallStart", "CallFailed")
  }

  @Test

    /** Configuration key for allowing localhost authentication bypass. */
    protected static final String SPNEGO_ALLOW_LOCALHOST = "spnego.allow.localhost";

    /** Configuration key for prompting NTLM authentication. */
    protected static final String SPNEGO_PROMPT_NTLM = "spnego.prompt.ntlm";

    /** Configuration key for allowing unsecure basic authentication. */