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vatamane pushed a commit to branch prototype/fdb-layer
in repository https://gitbox.apache.org/repos/asf/couchdb.git


The following commit(s) were added to refs/heads/prototype/fdb-layer by this 
push:
     new 6f2417e  Fix flaky couch_jobs type monitor test
6f2417e is described below

commit 6f2417e1af712b3720cf6c07713d7751cbc9fbef
Author: Nick Vatamaniuc <[email protected]>
AuthorDate: Fri May 15 17:17:50 2020 -0400

    Fix flaky couch_jobs type monitor test
    
    Sometimes this test fails on Jenkins but doesn't fail locally. The attempted
    fix is to make sure to simply retry a few times for the number of children 
in
    the supervisor to be the expected values. Also extend the timeout to 15
    seconds.
---
 src/couch_jobs/test/couch_jobs_tests.erl | 38 ++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/src/couch_jobs/test/couch_jobs_tests.erl 
b/src/couch_jobs/test/couch_jobs_tests.erl
index fbe4e93..11572a4 100644
--- a/src/couch_jobs/test/couch_jobs_tests.erl
+++ b/src/couch_jobs/test/couch_jobs_tests.erl
@@ -207,33 +207,67 @@ resubmit_as_job_creator(#{t1 := T, j1 := J}) ->
 
 
 type_timeouts_and_server(#{t1 := T, t1_timeout := T1Timeout}) ->
-    ?_test(begin
+    {timeout, 15, ?_test(begin
+
+        WaitForActivityMonitors = fun(N) ->
+            test_util:wait(fun() ->
+                Pids = couch_jobs_activity_monitor_sup:get_child_pids(),
+                case length(Pids) == N of
+                    true -> ok;
+                    false -> wait
+                end
+            end)
+        end,
+
+        WaitForNotifiers = fun(N) ->
+            test_util:wait(fun() ->
+                Pids = couch_jobs_notifier_sup:get_child_pids(),
+                case length(Pids) == N of
+                    true -> ok;
+                    false -> wait
+                end
+            end)
+        end,
+
         couch_jobs_server:force_check_types(),
 
         ?assertEqual(T1Timeout, couch_jobs:get_type_timeout(T)),
 
+        WaitForActivityMonitors(2),
         ?assertEqual(2,
             length(couch_jobs_activity_monitor_sup:get_child_pids())),
+
+        WaitForNotifiers(2),
         ?assertEqual(2, length(couch_jobs_notifier_sup:get_child_pids())),
+
         ?assertMatch({ok, _}, couch_jobs_server:get_notifier_server(T)),
 
         ?assertEqual(ok, couch_jobs:set_type_timeout(<<"t3">>, 8)),
         couch_jobs_server:force_check_types(),
+
+        WaitForActivityMonitors(3),
         ?assertEqual(3,
             length(couch_jobs_activity_monitor_sup:get_child_pids())),
+
+        WaitForNotifiers(3),
         ?assertEqual(3, length(couch_jobs_notifier_sup:get_child_pids())),
 
         ?assertEqual(ok, couch_jobs:clear_type_timeout(<<"t3">>)),
         couch_jobs_server:force_check_types(),
+
+        WaitForActivityMonitors(2),
         ?assertEqual(2,
             length(couch_jobs_activity_monitor_sup:get_child_pids())),
+
+        WaitForNotifiers(2),
         ?assertEqual(2,
             length(couch_jobs_notifier_sup:get_child_pids())),
+
         ?assertMatch({error, _},
             couch_jobs_server:get_notifier_server(<<"t3">>)),
 
         ?assertEqual(not_found, couch_jobs:get_type_timeout(<<"t3">>))
-    end).
+    end)}.
 
 
 dead_notifier_restarts_jobs_server(#{}) ->

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