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-module(couch_replicator_rate_limiter_tests).
-include_lib("couch/include/couch_eunit.hrl").
rate_limiter_test_() ->
{
foreach,
fun setup/0,
fun teardown/1,
[
t_new_key(),
t_1_failure(),
t_2_failures_back_to_back(),
t_2_failures(),
t_success_threshold(),
t_1_failure_2_successes()
]
}.
t_new_key() ->
?_test(begin
?assertEqual(0, couch_replicator_rate_limiter:interval({"foo", get}))
end).
t_1_failure() ->
?_test(begin
?assertEqual(24, couch_replicator_rate_limiter:failure({"foo", get}))
end).
t_2_failures() ->
?_test(begin
couch_replicator_rate_limiter:failure({"foo", get}),
low_pass_filter_delay(),
Interval = couch_replicator_rate_limiter:failure({"foo", get}),
?assertEqual(29, Interval)
end).
t_2_failures_back_to_back() ->
?_test(begin
couch_replicator_rate_limiter:failure({"foo", get}),
Interval = couch_replicator_rate_limiter:failure({"foo", get}),
?assertEqual(24, Interval)
end).
t_success_threshold() ->
?_test(begin
Interval = couch_replicator_rate_limiter:success({"foo", get}),
?assertEqual(0, Interval),
Interval = couch_replicator_rate_limiter:success({"foo", get}),
?assertEqual(0, Interval)
end).
t_1_failure_2_successes() ->
?_test(begin
couch_replicator_rate_limiter:failure({"foo", get}),
low_pass_filter_delay(),
Succ1 = couch_replicator_rate_limiter:success({"foo", get}),
?assertEqual(20, Succ1),
low_pass_filter_delay(),
Succ2 = couch_replicator_rate_limiter:success({"foo", get}),
?assertEqual(0, Succ2)
end).
low_pass_filter_delay() ->
timer:sleep(100).
setup() ->
{ok, Pid} = couch_replicator_rate_limiter:start_link(),
Pid.
teardown(Pid) ->
Ref = erlang:monitor(process, Pid),
unlink(Pid),
exit(Pid, kill),
receive
{'DOWN', Ref, process, Pid, _} ->
ok
end,
ok.
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