Port 100-ref-counter.t etap test suite to eunit
Project: http://git-wip-us.apache.org/repos/asf/couchdb-couch/repo Commit: http://git-wip-us.apache.org/repos/asf/couchdb-couch/commit/e393e92d Tree: http://git-wip-us.apache.org/repos/asf/couchdb-couch/tree/e393e92d Diff: http://git-wip-us.apache.org/repos/asf/couchdb-couch/diff/e393e92d Branch: refs/heads/1963-eunit-bigcouch Commit: e393e92dd194004f1d4a9c7708440d964eaf2997 Parents: 1bac4ac Author: Alexander Shorin <[email protected]> Authored: Mon May 26 20:59:45 2014 +0400 Committer: Russell Branca <[email protected]> Committed: Mon Aug 11 13:09:53 2014 -0700 ---------------------------------------------------------------------- test/couchdb/couch_ref_counter_tests.erl | 107 ++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/couchdb-couch/blob/e393e92d/test/couchdb/couch_ref_counter_tests.erl ---------------------------------------------------------------------- diff --git a/test/couchdb/couch_ref_counter_tests.erl b/test/couchdb/couch_ref_counter_tests.erl new file mode 100644 index 0000000..b7e97b4 --- /dev/null +++ b/test/couchdb/couch_ref_counter_tests.erl @@ -0,0 +1,107 @@ +% 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_ref_counter_tests). + +-include("couch_eunit.hrl"). +-include_lib("couchdb/couch_db.hrl"). + +-define(TIMEOUT, 1000). + + +setup() -> + {ok, RefCtr} = couch_ref_counter:start([]), + ChildPid = spawn(fun() -> loop() end), + {RefCtr, ChildPid}. + +teardown({_, ChildPid}) -> + erlang:monitor(process, ChildPid), + ChildPid ! close, + wait(). + + +couch_ref_counter_test_() -> + { + "CouchDB reference counter tests", + { + foreach, + fun setup/0, fun teardown/1, + [ + fun should_initialize_with_calling_process_as_referrer/1, + fun should_ignore_unknown_pid/1, + fun should_increment_counter_on_pid_add/1, + fun should_not_increase_counter_on_readding_same_pid/1, + fun should_drop_ref_for_double_added_pid/1, + fun should_decrement_counter_on_pid_drop/1, + fun should_add_after_drop/1, + fun should_decrement_counter_on_process_exit/1 + + ] + } + }. + + +should_initialize_with_calling_process_as_referrer({RefCtr, _}) -> + ?_assertEqual(1, couch_ref_counter:count(RefCtr)). + +should_ignore_unknown_pid({RefCtr, ChildPid}) -> + ?_assertEqual(ok, couch_ref_counter:drop(RefCtr, ChildPid)). + +should_increment_counter_on_pid_add({RefCtr, ChildPid}) -> + couch_ref_counter:add(RefCtr, ChildPid), + ?_assertEqual(2, couch_ref_counter:count(RefCtr)). + +should_not_increase_counter_on_readding_same_pid({RefCtr, ChildPid}) -> + couch_ref_counter:add(RefCtr, ChildPid), + couch_ref_counter:add(RefCtr, ChildPid), + ?_assertEqual(2, couch_ref_counter:count(RefCtr)). + +should_drop_ref_for_double_added_pid({RefCtr, ChildPid}) -> + couch_ref_counter:add(RefCtr, ChildPid), + couch_ref_counter:add(RefCtr, ChildPid), + couch_ref_counter:drop(RefCtr, ChildPid), + ?_assertEqual(2, couch_ref_counter:count(RefCtr)). + +should_decrement_counter_on_pid_drop({RefCtr, ChildPid}) -> + couch_ref_counter:add(RefCtr, ChildPid), + couch_ref_counter:drop(RefCtr, ChildPid), + ?_assertEqual(1, couch_ref_counter:count(RefCtr)). + +should_add_after_drop({RefCtr, ChildPid}) -> + couch_ref_counter:add(RefCtr, ChildPid), + couch_ref_counter:drop(RefCtr, ChildPid), + couch_ref_counter:add(RefCtr, ChildPid), + ?_assertEqual(2, couch_ref_counter:count(RefCtr)). + +should_decrement_counter_on_process_exit({RefCtr, ChildPid}) -> + ?_assertEqual(1, + begin + couch_ref_counter:add(RefCtr, ChildPid), + erlang:monitor(process, ChildPid), + ChildPid ! close, + wait(), + couch_ref_counter:count(RefCtr) + end). + + +loop() -> + receive + close -> ok + end. + +wait() -> + receive + {'DOWN', _, _, _, _} -> + ok + after ?TIMEOUT -> + throw(timeout_error) + end.
