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Diffstat (limited to 'test/etap/120-stats-collect.t')
-rwxr-xr-x | test/etap/120-stats-collect.t | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/test/etap/120-stats-collect.t b/test/etap/120-stats-collect.t new file mode 100755 index 00000000..dee88765 --- /dev/null +++ b/test/etap/120-stats-collect.t @@ -0,0 +1,150 @@ +#!/usr/bin/env escript +%% -*- erlang -*- + +% Licensed under the Apache License, Version 2.0 (the "License"); you may not +% use this file except in compliance with the License. You may obtain a copy of +% the License at +% +% http://www.apache.org/licenses/LICENSE-2.0 +% +% Unless required by applicable law or agreed to in writing, software +% distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +% WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +% License for the specific language governing permissions and limitations under +% the License. + +main(_) -> + test_util:init_code_path(), + etap:plan(11), + case (catch test()) of + ok -> + etap:end_tests(); + Other -> + etap:diag(io_lib:format("Test died abnormally: ~p", [Other])), + etap:bail() + end, + ok. + +test() -> + couch_stats_collector:start(), + ok = test_counters(), + ok = test_abs_values(), + ok = test_proc_counting(), + ok = test_all(), + ok. + +test_counters() -> + AddCount = fun() -> couch_stats_collector:increment(foo) end, + RemCount = fun() -> couch_stats_collector:decrement(foo) end, + repeat(AddCount, 100), + repeat(RemCount, 25), + repeat(AddCount, 10), + repeat(RemCount, 5), + etap:is( + couch_stats_collector:get(foo), + 80, + "Incrememnt tracks correctly." + ), + + repeat(RemCount, 80), + etap:is( + couch_stats_collector:get(foo), + 0, + "Decremented to zaro." + ), + ok. + +test_abs_values() -> + lists:map(fun(Val) -> + couch_stats_collector:record(bar, Val) + end, lists:seq(1, 15)), + etap:is( + couch_stats_collector:get(bar), + lists:seq(1, 15), + "Absolute values are recorded correctly." + ), + + couch_stats_collector:clear(bar), + etap:is( + couch_stats_collector:get(bar), + nil, + "Absolute values are cleared correctly." + ), + ok. + +test_proc_counting() -> + Self = self(), + OnePid = spawn(fun() -> + couch_stats_collector:track_process_count(hoopla), + Self ! reporting, + receive sepuku -> ok end + end), + R1 = erlang:monitor(process, OnePid), + receive reporting -> ok end, + etap:is( + couch_stats_collector:get(hoopla), + 1, + "track_process_count incrememnts the counter." + ), + + TwicePid = spawn(fun() -> + couch_stats_collector:track_process_count(hoopla), + couch_stats_collector:track_process_count(hoopla), + Self ! reporting, + receive sepuku -> ok end + end), + R2 = erlang:monitor(process, TwicePid), + receive reporting -> ok end, + etap:is( + couch_stats_collector:get(hoopla), + 3, + "track_process_count allows more than one incrememnt per Pid" + ), + + OnePid ! sepuku, + receive {'DOWN', R1, _, _, _} -> ok end, + timer:sleep(250), + etap:is( + couch_stats_collector:get(hoopla), + 2, + "Process count is decremented when process exits." + ), + + TwicePid ! sepuku, + receive {'DOWN', R2, _, _, _} -> ok end, + timer:sleep(250), + etap:is( + couch_stats_collector:get(hoopla), + 0, + "Process count is decremented for each call to track_process_count." + ), + ok. + +test_all() -> + couch_stats_collector:record(bar, 0.0), + couch_stats_collector:record(bar, 1.0), + etap:is( + couch_stats_collector:all(), + [{foo, 0}, {hoopla, 0}, {bar, [1.0, 0.0]}], + "all/0 returns all counters and absolute values." + ), + + etap:is( + couch_stats_collector:all(incremental), + [{foo, 0}, {hoopla, 0}], + "all/1 returns only the specified type." + ), + + couch_stats_collector:record(zing, 90), + etap:is( + couch_stats_collector:all(absolute), + [{zing, [90]}, {bar, [1.0, 0.0]}], + "all/1 returns only the specified type." + ), + ok. + +repeat(_, 0) -> + ok; +repeat(Fun, Count) -> + Fun(), + repeat(Fun, Count-1). |