Github user kxepal commented on a diff in the pull request:
https://github.com/apache/couchdb/pull/253#discussion_r14908936
--- Diff: test/couchdb/couch_work_queue_tests.erl ---
@@ -0,0 +1,393 @@
+% 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.
+
+-module(couch_work_queue_tests).
+
+-include("couch_eunit.hrl").
+
+-define(TIMEOUT, 100).
+
+
+setup(Opts) ->
+ {ok, Q} = couch_work_queue:new(Opts),
+ Producer = spawn_producer(Q),
+ Consumer = spawn_consumer(Q),
+ {Q, Producer, Consumer}.
+
+setup_max_items() ->
+ setup([{max_items, 3}]).
+
+setup_max_size() ->
+ setup([{max_size, 160}]).
+
+setup_max_items_and_size() ->
+ setup([{max_size, 160}, {max_items, 3}]).
+
+setup_multi_workers() ->
+ {Q, Producer, Consumer1} = setup([{max_size, 160},
+ {max_items, 3},
+ {multi_workers, true}]),
+ Consumer2 = spawn_consumer(Q),
+ Consumer3 = spawn_consumer(Q),
+ {Q, Producer, [Consumer1, Consumer2, Consumer3]}.
+
+teardown({Q, Producer, Consumers}) when is_list(Consumers) ->
+ % consume all to unblock and let producer/consumer stop without timeout
+ [consume(Consumer, all) || Consumer <- Consumers],
+
+ ok = close_queue(Q),
+ ok = stop(Producer, "producer"),
+ R = [stop(Consumer, "consumer") || Consumer <- Consumers],
+ R = [ok || _ <- Consumers],
+ ok;
+teardown({Q, Producer, Consumer}) ->
+ teardown({Q, Producer, [Consumer]}).
+
+
+single_consumer_test_() ->
+ {
+ "Single producer and consumer",
+ [
+ {
+ "Queue with 3 max items",
+ {
+ foreach,
+ fun setup_max_items/0, fun teardown/1,
+ single_consumer_max_item_count() ++ common_cases()
+ }
+ },
+ {
+ "Queue with max size of 160 bytes",
+ {
+ foreach,
+ fun setup_max_size/0, fun teardown/1,
+ single_consumer_max_size() ++ common_cases()
+ }
+ },
+ {
+ "Queue with max size of 160 bytes and 3 max items",
+ {
+ foreach,
+ fun setup_max_items_and_size/0, fun teardown/1,
+ single_consumer_max_items_and_size() ++ common_cases()
+ }
+ }
+ ]
+ }.
+
+multiple_consumers_test_() ->
+ {
+ "Single producer and multiple consumers",
+ [
+ {
+ "Queue with max size of 160 bytes and 3 max items",
+ {
+ foreach,
+ fun setup_multi_workers/0, fun teardown/1,
+ common_cases() ++ multiple_consumers()
--- End diff --
Could you be more verbose about? I don't see there any pattern and how it
can be used in other files.
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