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-rw-r--r--lib/tools/test/cover_SUITE.erl32
1 files changed, 25 insertions, 7 deletions
diff --git a/lib/tools/test/cover_SUITE.erl b/lib/tools/test/cover_SUITE.erl
index ec61c57cec..0b98f52e6e 100644
--- a/lib/tools/test/cover_SUITE.erl
+++ b/lib/tools/test/cover_SUITE.erl
@@ -520,9 +520,9 @@ reconnect(Config) ->
rpc:cast(N1,f,call_f2_when_isolated,[]),
%% Disconnect and check that node is removed from main cover node
- net_kernel:disconnect(N1),
+ true = net_kernel:disconnect(N1),
timer:sleep(500), % allow some to detect disconnect and for f:f2() call
- [] = cover:which_nodes(),
+ cover_which_nodes([]),
%% Do some add one module (b) and remove one module (a)
code:purge(a),
@@ -530,7 +530,7 @@ reconnect(Config) ->
{ok,b} = cover:compile(b),
cover_compiled = code:which(b),
- [] = cover:which_nodes(),
+ cover_which_nodes([]),
check_f_calls(1,0), % only the first call - before the flush
%% Reconnect the node and check that b and f are cover compiled but not a
@@ -573,7 +573,7 @@ die_and_reconnect(Config) ->
%% Kill the node
rpc:call(N1,erlang,halt,[]),
- [] = cover:which_nodes(),
+ cover_which_nodes([]),
check_f_calls(1,0), % only the first call - before the flush
@@ -614,7 +614,7 @@ dont_reconnect_after_stop(Config) ->
%% Stop cover on the node, then terminate the node
cover:stop(N1),
rpc:call(N1,erlang,halt,[]),
- [] = cover:which_nodes(),
+ cover_which_nodes([]),
check_f_calls(1,0),
@@ -622,7 +622,7 @@ dont_reconnect_after_stop(Config) ->
{ok,N1} = ?t:start_node(NodeName,peer,
[{args," -pa " ++ DataDir},{start_cover,false}]),
timer:sleep(300),
- [] = cover:which_nodes(),
+ cover_which_nodes([]),
Beam = rpc:call(N1,code,which,[f]),
false = (Beam==cover_compiled),
@@ -667,7 +667,7 @@ stop_node_after_disconnect(Config) ->
{ok,N1} = ?t:start_node(NodeName,peer,
[{args," -pa " ++ DataDir},{start_cover,false}]),
timer:sleep(300),
- [] = cover:which_nodes(),
+ cover_which_nodes([]),
Beam = rpc:call(N1,code,which,[f]),
false = (Beam==cover_compiled),
@@ -1575,3 +1575,21 @@ is_unloaded(What) ->
check_f_calls(F1,F2) ->
{ok,[{{f,f1,0},F1},{{f,f2,0},F2}|_]} = cover:analyse(f,calls,function).
+
+cover_which_nodes(Expected) ->
+ case cover:which_nodes() of
+ Expected ->
+ ok;
+ Other ->
+ {Time,ok} = timer:tc(fun Retry() ->
+ case cover:which_nodes() of
+ Expected -> ok;
+ _ ->
+ ?t:sleep(100),
+ Retry()
+ end
+ end),
+ io:format("~p ms before cover:which_nodes() returned ~p",
+ [Time,Expected]),
+ Expected = Other
+ end.