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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(couch_js_tests).
-include_lib("eunit/include/eunit.hrl").
couch_js_test_() ->
{
"Test couchjs",
{
setup,
fun test_util:start_couch/0,
fun test_util:stop_couch/1,
[
fun should_create_sandbox/0,
fun should_roundtrip_utf8/0,
fun should_roundtrip_modified_utf8/0,
fun should_replace_broken_utf16/0,
fun should_allow_js_string_mutations/0,
{timeout, 60000, fun should_exit_on_oom/0}
]
}
}.
should_create_sandbox() ->
% Try and detect whether we can see out of the
% sandbox or not.
Src = <<
"function(doc) {\n"
" try {\n"
" emit(false, typeof(Couch.compile_function));\n"
" } catch (e) {\n"
" emit(true, e.message);\n"
" }\n"
"}\n"
>>,
Proc = couch_query_servers:get_os_process(<<"javascript">>),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src]),
Result = couch_query_servers:proc_prompt(Proc, [<<"map_doc">>, <<"{}">>]),
?assertEqual([[[true, <<"Couch is not defined">>]]], Result).
should_roundtrip_utf8() ->
% Try round tripping UTF-8 both directions through
% couchjs. These tests use hex encoded values of
% Ä (C384) and Ü (C39C) so as to avoid odd editor/Erlang encoding
% strangeness.
Src = <<
"function(doc) {\n"
" emit(doc.value, \"", 16#C3, 16#9C, "\");\n"
"}\n"
>>,
Proc = couch_query_servers:get_os_process(<<"javascript">>),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src]),
Doc = {[
{<<"value">>, <<16#C3, 16#84>>}
]},
Result = couch_query_servers:proc_prompt(Proc, [<<"map_doc">>, Doc]),
?assertEqual([[[<<16#C3, 16#84>>, <<16#C3, 16#9C>>]]], Result).
should_roundtrip_modified_utf8() ->
% Mimicing the test case from the mailing list
Src = <<
"function(doc) {\n"
" emit(doc.value.toLowerCase(), \"", 16#C3, 16#9C, "\");\n"
"}\n"
>>,
Proc = couch_query_servers:get_os_process(<<"javascript">>),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src]),
Doc = {[
{<<"value">>, <<16#C3, 16#84>>}
]},
Result = couch_query_servers:proc_prompt(Proc, [<<"map_doc">>, Doc]),
?assertEqual([[[<<16#C3, 16#A4>>, <<16#C3, 16#9C>>]]], Result).
should_replace_broken_utf16() ->
% This test reverse the surrogate pair of
% the Boom emoji U+1F4A5
Src = <<
"function(doc) {\n"
" emit(doc.value.split(\"\").reverse().join(\"\"), 1);\n"
"}\n"
>>,
Proc = couch_query_servers:get_os_process(<<"javascript">>),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src]),
Doc = {[
{<<"value">>, list_to_binary(xmerl_ucs:to_utf8([16#1F4A5]))}
]},
Result = couch_query_servers:proc_prompt(Proc, [<<"map_doc">>, Doc]),
% Invalid UTF-8 gets replaced with the 16#FFFD replacement
% marker
Markers = list_to_binary(xmerl_ucs:to_utf8([16#FFFD, 16#FFFD])),
?assertEqual([[[Markers, 1]]], Result).
should_allow_js_string_mutations() ->
% This binary corresponds to this string: мама мыла раму
% Which I'm told translates to: "mom was washing the frame"
MomWashedTheFrame = <<
16#D0, 16#BC, 16#D0, 16#B0, 16#D0, 16#BC, 16#D0, 16#B0, 16#20,
16#D0, 16#BC, 16#D1, 16#8B, 16#D0, 16#BB, 16#D0, 16#B0, 16#20,
16#D1, 16#80, 16#D0, 16#B0, 16#D0, 16#BC, 16#D1, 16#83
>>,
Mom = <<16#D0, 16#BC, 16#D0, 16#B0, 16#D0, 16#BC, 16#D0, 16#B0>>,
Washed = <<16#D0, 16#BC, 16#D1, 16#8B, 16#D0, 16#BB, 16#D0, 16#B0>>,
Src1 = <<
"function(doc) {\n"
" emit(\"length\", doc.value.length);\n"
"}\n"
>>,
Src2 = <<
"function(doc) {\n"
" emit(\"substring\", doc.value.substring(5, 9));\n"
"}\n"
>>,
Src3 = <<
"function(doc) {\n"
" emit(\"slice\", doc.value.slice(0, 4));\n"
"}\n"
>>,
Proc = couch_query_servers:get_os_process(<<"javascript">>),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src1]),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src2]),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src3]),
Doc = {[{<<"value">>, MomWashedTheFrame}]},
Result = couch_query_servers:proc_prompt(Proc, [<<"map_doc">>, Doc]),
Expect = [
[[<<"length">>, 14]],
[[<<"substring">>, Washed]],
[[<<"slice">>, Mom]]
],
?assertEqual(Expect, Result).
should_exit_on_oom() ->
Src = <<
"var state = [];\n"
"function(doc) {\n"
" var val = \"0123456789ABCDEF\";\n"
" for(var i = 0; i < 165535; i++) {\n"
" state.push([val, val]);\n"
" }\n"
"}\n"
>>,
Proc = couch_query_servers:get_os_process(<<"javascript">>),
true = couch_query_servers:proc_prompt(Proc, [<<"add_fun">>, Src]),
trigger_oom(Proc).
trigger_oom(Proc) ->
Status = try
couch_query_servers:proc_prompt(Proc, [<<"map_doc">>, <<"{}">>]),
continue
catch throw:{os_process_error, {exit_status, 1}} ->
done
end,
case Status of
continue -> trigger_oom(Proc);
done -> ok
end.
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