From 72bfa81400ee24f38ac4044420b080e66a5da37a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Thu, 3 Sep 2015 15:39:02 +0200
Subject: gen_event_SUITE: Remove unnecessary sleep calls

The calls to test_server:sleep/1 are unnecessary as the swapping
of handlers happens in a single process. Even though the
{swap_info,...} message is sent asynchronously, the
gen_event:which_handlers/1 call will not have a chance to
execute until the handlers have been swapped.
---
 lib/stdlib/test/gen_event_SUITE.erl | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/lib/stdlib/test/gen_event_SUITE.erl b/lib/stdlib/test/gen_event_SUITE.erl
index 7a6fcba4e5..b019f98b69 100644
--- a/lib/stdlib/test/gen_event_SUITE.erl
+++ b/lib/stdlib/test/gen_event_SUITE.erl
@@ -412,7 +412,6 @@ notify(Config) when is_list(Config) ->
 		  ok
 	  end,
     ?line ok = gen_event:notify(my_dummy_handler, {swap_event,dummy1_h,swap}),
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
     ?line ok = gen_event:notify(my_dummy_handler, Event),
     ?line receive
@@ -445,7 +444,6 @@ notify(Config) when is_list(Config) ->
 	  end,
     ?line ok = gen_event:notify(my_dummy_handler,
 				{swap_event, {dummy1_h, 9}, swap}),
-    ?t:sleep(1000),
     ?line [{dummy1_h,9}] = gen_event:which_handlers(my_dummy_handler),
     ?line ok = gen_event:notify(my_dummy_handler, Event),
     ?line receive
@@ -485,7 +483,6 @@ notify(Config) when is_list(Config) ->
 
     ?line ok = gen_event:add_sup_handler(my_dummy_handler, dummy_h, [self()]),
     ?line ok = gen_event:notify(my_dummy_handler, {swap_event,dummy1_h,swap}),
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
 
     ?line ok = gen_event:notify(my_dummy_handler, do_crash),
@@ -496,7 +493,6 @@ notify(Config) when is_list(Config) ->
 
     ?line ok = gen_event:add_sup_handler(my_dummy_handler, dummy_h, [self()]),
     ?line ok = gen_event:notify(my_dummy_handler, {swap_event,dummy1_h,swap}),
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
 
     ?line ok = gen_event:notify(my_dummy_handler, delete_event),
@@ -529,7 +525,6 @@ sync_notify(Config) when is_list(Config) ->
 	  end,
     ?line ok = gen_event:sync_notify(my_dummy_handler,
 				     {swap_event, dummy1_h, swap}),
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
     ?line ok = gen_event:sync_notify(my_dummy_handler, Event),
     ?line receive
@@ -562,7 +557,6 @@ sync_notify(Config) when is_list(Config) ->
 	  end,
     ?line ok = gen_event:sync_notify(my_dummy_handler,
 				     {swap_event, {dummy1_h, 9}, swap}),
-    ?t:sleep(1000),
     ?line [{dummy1_h,9}] = gen_event:which_handlers(my_dummy_handler),
     ?line ok = gen_event:sync_notify(my_dummy_handler, Event),
     ?line receive
@@ -603,7 +597,6 @@ sync_notify(Config) when is_list(Config) ->
     ?line ok = gen_event:add_sup_handler(my_dummy_handler, dummy_h, [self()]),
     ?line ok = gen_event:sync_notify(my_dummy_handler,
 				     {swap_event,dummy1_h,swap}),
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
 
     ?line ok = gen_event:sync_notify(my_dummy_handler, do_crash),
@@ -615,7 +608,6 @@ sync_notify(Config) when is_list(Config) ->
     ?line ok = gen_event:add_sup_handler(my_dummy_handler, dummy_h, [self()]),
     ?line ok = gen_event:sync_notify(my_dummy_handler,
 				     {swap_event,dummy1_h,swap}),
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
 
     ?line ok = gen_event:sync_notify(my_dummy_handler, delete_event),
@@ -789,7 +781,6 @@ info(Config) when is_list(Config) ->
 		  ok
 	  end,
     ?line my_dummy_handler ! {swap_info,dummy1_h,swap},
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
     ?line my_dummy_handler ! Info,
     ?line receive
@@ -821,7 +812,6 @@ info(Config) when is_list(Config) ->
 		  ok
 	  end,
     ?line my_dummy_handler ! {swap_info,{dummy1_h,2},swap},
-    ?t:sleep(1000),
     ?line [{dummy1_h,2}] = gen_event:which_handlers(my_dummy_handler),
     ?line my_dummy_handler ! Info,
     ?line receive
@@ -853,7 +843,6 @@ info(Config) when is_list(Config) ->
 		  ok
 	  end,
     ?line my_dummy_handler ! {swap_info,dummy1_h,swap},
-    ?t:sleep(1000),
     ?line [dummy1_h] = gen_event:which_handlers(my_dummy_handler),
     ?line my_dummy_handler ! Info,
     ?line receive
-- 
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