From a0e8cead91619e88f60fca029669341fc5033291 Mon Sep 17 00:00:00 2001
From: Tom Henderson <tomh@tomh.org>
Date: Thu, 25 Aug 2016 10:48:35 -0700
Subject: [PATCH] wifi:  Assign stream numbers to random variables in bug 2222
 test

Otherwise, the test may fail if the stream assignment on backoff
generation is perturbed.
---
 src/wifi/test/wifi-test.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/wifi/test/wifi-test.cc b/src/wifi/test/wifi-test.cc
index 9d5d1c961..a4397b986 100644
--- a/src/wifi/test/wifi-test.cc
+++ b/src/wifi/test/wifi-test.cc
@@ -996,8 +996,10 @@ Bug2222TestCase::DoRun (void)
   m_countInternalCollisions = 0;
     
   //Generate same backoff for AC_VI and AC_VO
+  //The below combination will work
   RngSeedManager::SetSeed (1);
-  RngSeedManager::SetRun (31);
+  RngSeedManager::SetRun (2);
+  int64_t streamNumber = 100;
 
   NodeContainer wifiNodes;
   wifiNodes.Create (2);
@@ -1015,6 +1017,9 @@ Bug2222TestCase::DoRun (void)
   NetDeviceContainer wifiDevices;
   wifiDevices = wifi.Install (phy, mac, wifiNodes);
 
+  // Assign fixed streams to random variables in use
+  wifi.AssignStreams (wifiDevices, streamNumber);
+
   MobilityHelper mobility;
   Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();