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% 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(fabric2_changes_fold_tests).
-include_lib("couch/include/couch_db.hrl").
-include_lib("couch/include/couch_eunit.hrl").
-include_lib("eunit/include/eunit.hrl").
-define(DOC_COUNT, 25).
changes_fold_test_() ->
{
"Test changes fold operations",
{
setup,
fun setup/0,
fun cleanup/1,
{with, [
fun fold_changes_basic/1,
fun fold_changes_since_now/1,
fun fold_changes_since_seq/1,
fun fold_changes_basic_rev/1,
fun fold_changes_since_now_rev/1,
fun fold_changes_since_seq_rev/1
]}
}
}.
setup() ->
Ctx = test_util:start_couch([fabric]),
{ok, Db} = fabric2_db:create(?tempdb(), [{user_ctx, ?ADMIN_USER}]),
Rows = lists:map(fun(Val) ->
DocId = fabric2_util:uuid(),
Doc = #doc{
id = DocId,
body = {[{<<"value">>, Val}]}
},
{ok, RevId} = fabric2_db:update_doc(Db, Doc, []),
UpdateSeq = fabric2_db:get_update_seq(Db),
#{
id => DocId,
sequence => UpdateSeq,
deleted => false,
rev_id => RevId
}
end, lists:seq(1, ?DOC_COUNT)),
{Db, Rows, Ctx}.
cleanup({Db, _DocIdRevs, Ctx}) ->
ok = fabric2_db:delete(fabric2_db:name(Db), []),
test_util:stop_couch(Ctx).
fold_changes_basic({Db, DocRows, _}) ->
{ok, Rows} = fabric2_db:fold_changes(Db, 0, fun fold_fun/2, []),
?assertEqual(lists:reverse(DocRows), Rows).
fold_changes_since_now({Db, _, _}) ->
{ok, Rows} = fabric2_db:fold_changes(Db, now, fun fold_fun/2, []),
?assertEqual([], Rows).
fold_changes_since_seq({_, [], _}) ->
ok;
fold_changes_since_seq({Db, [Row | RestRows], _}) ->
#{sequence := Since} = Row,
{ok, Rows} = fabric2_db:fold_changes(Db, Since, fun fold_fun/2, []),
?assertEqual(lists:reverse(RestRows), Rows),
fold_changes_since_seq({Db, RestRows, nil}).
fold_changes_basic_rev({Db, _, _}) ->
Opts = [{dir, rev}],
{ok, Rows} = fabric2_db:fold_changes(Db, 0, fun fold_fun/2, [], Opts),
?assertEqual([], Rows).
fold_changes_since_now_rev({Db, DocRows, _}) ->
Opts = [{dir, rev}],
{ok, Rows} = fabric2_db:fold_changes(Db, now, fun fold_fun/2, [], Opts),
?assertEqual(DocRows, Rows).
fold_changes_since_seq_rev({_, [], _}) ->
ok;
fold_changes_since_seq_rev({Db, DocRows, _}) ->
#{sequence := Since} = lists:last(DocRows),
Opts = [{dir, rev}],
{ok, Rows} = fabric2_db:fold_changes(Db, Since, fun fold_fun/2, [], Opts),
?assertEqual(DocRows, Rows),
RestRows = lists:sublist(DocRows, length(DocRows) - 1),
fold_changes_since_seq_rev({Db, RestRows, nil}).
fold_fun(#{} = Change, Acc) ->
{ok, [Change | Acc]}.
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