Test fixes

Author: LVala

test/ex_webrtc/peer_connection/twcc_recorder_test.exs

@@ -27,12 +27,18 @@ defmodule ExWebRTC.PeerConnection.TWCCRecorderTest do
       seq_no_3 = @seq_no + 2
 
       recorder = TWCCRecorder.record_packet(@recorder, @seq_no)
+      time1 = System.monotonic_time(:millisecond)
       Process.sleep(15)
       recorder = TWCCRecorder.record_packet(recorder, seq_no_2)
+      time2 = System.monotonic_time(:millisecond)
       Process.sleep(15)
       recorder = TWCCRecorder.record_packet(recorder, seq_no_3)
+      time3 = System.monotonic_time(:millisecond)
       end_seq_no = @seq_no + 3
 
+      IO.inspect(time2 - time1, label: :DELTA1)
+      IO.inspect(time3 - time2, label: :DELTA2)
+
       assert %TWCCRecorder{
                timestamps: %{
                  @seq_no => timestamp_1,