%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2006-2016. All Rights Reserved. %% %% 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. %% %% %CopyrightEnd% %% %% Originally based on Per Gustafsson's test suite. %% -module(bs_bincomp_SUITE). -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, byte_aligned/1,bit_aligned/1,extended_byte_aligned/1, extended_bit_aligned/1,mixed/1,tracing/1]). -include_lib("common_test/include/ct.hrl"). suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> [byte_aligned, bit_aligned, extended_byte_aligned, extended_bit_aligned, mixed, tracing]. groups() -> []. init_per_suite(Config) -> Config. end_per_suite(_Config) -> ok. init_per_group(_GroupName, Config) -> Config. end_per_group(_GroupName, Config) -> Config. byte_aligned(Config) when is_list(Config) -> <<"abcdefg">> = << <<(X+32)>> || <<X>> <= <<"ABCDEFG">> >>, <<1:32/little,2:32/little,3:32/little,4:32/little>> = << <<X:32/little>> || <<X:32>> <= <<1:32,2:32,3:32,4:32>> >>, <<1:32/little,2:32/little,3:32/little,4:32/little>> = << <<X:32/little>> || <<X:16>> <= <<1:16,2:16,3:16,4:16>> >>, ok. bit_aligned(Config) when is_list(Config) -> <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>> = << <<(X+32):7>> || <<X>> <= <<"ABCDEFG">> >>, <<"ABCDEFG">> = << <<(X-32)>> || <<X:7>> <= <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>> >>, <<1:31/little,2:31/little,3:31/little,4:31/little>> = << <<X:31/little>> || <<X:31>> <= <<1:31,2:31,3:31,4:31>> >>, <<1:31/little,2:31/little,3:31/little,4:31/little>> = << <<X:31/little>> || <<X:15>> <= <<1:15,2:15,3:15,4:15>> >>, ok. extended_byte_aligned(Config) when is_list(Config) -> <<"abcdefg">> = << <<(X+32)>> || X <- "ABCDEFG" >>, "abcdefg" = [(X+32) || <<X>> <= <<"ABCDEFG">>], <<1:32/little,2:32/little,3:32/little,4:32/little>> = << <<X:32/little>> || X <- [1,2,3,4] >>, [256,512,768,1024] = [X || <<X:16/little>> <= <<1:16,2:16,3:16,4:16>>], ok. extended_bit_aligned(Config) when is_list(Config) -> <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>> = << <<(X+32):7>> || X <- "ABCDEFG" >>, "ABCDEFG" = [(X-32) || <<X:7>> <= <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>>], <<1:31/little,2:31/little,3:31/little,4:31/little>> = << <<X:31/little>> || X <- [1,2,3,4] >>, [256,512,768,1024] = [X || <<X:15/little>> <= <<1:15,2:15,3:15,4:15>>], ok. mixed(Config) when is_list(Config) -> <<2,3,3,4,4,5,5,6>> = << <<(X+Y)>> || <<X>> <= <<1,2,3,4>>, <<Y>> <= <<1,2>> >>, <<2,3,3,4,4,5,5,6>> = << <<(X+Y)>> || <<X>> <= <<1,2,3,4>>, Y <- [1,2] >>, <<2,3,3,4,4,5,5,6>> = << <<(X+Y)>> || X <- [1,2,3,4], Y <- [1,2] >>, [2,3,3,4,4,5,5,6] = [(X+Y) || <<X>> <= <<1,2,3,4>>, <<Y>> <= <<1,2>>], [2,3,3,4,4,5,5,6] = [(X+Y) || <<X>> <= <<1,2,3,4>>, Y <- [1,2]], <<2:3,3:3,3:3,4:3,4:3,5:3,5:3,6:3>> = << <<(X+Y):3>> || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, <<Y:3>> <= <<1:3,2:3>> >>, <<2:3,3:3,3:3,4:3,4:3,5:3,5:3,6:3>> = << <<(X+Y):3>> || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, Y <- [1,2] >>, <<2:3,3:3,3:3,4:3,4:3,5:3,5:3,6:3>> = << <<(X+Y):3>> || X <- [1,2,3,4], Y <- [1,2] >>, [2,3,3,4,4,5,5,6] = [(X+Y) || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, <<Y:3>> <= <<1:3,2:3>>], [2,3,3,4,4,5,5,6] = [(X+Y) || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, Y <- [1,2]], ok. %% OTP-8179: Call tracing on binary comprehensions would cause a crash. tracing(Config) when is_list(Config) -> Self = self(), Tracer = spawn_opt(fun() -> tracer(Self, 0) end, [link,{priority,max}]), Pattern = [{'_',[],[{return_trace}]}], erlang:trace_pattern({?MODULE,'_','_'}, Pattern, [local]), erlang:trace(self(), true, [call,{tracer,Tracer}]), random_binaries(1000), Tracer ! done, receive {Tracer,N} -> {comment,integer_to_list(N) ++ " trace messages"} end. random_binary() -> Seq = [1,2,3,4,5,6,7,8,9,10], << <<($a + rand:uniform($z - $a)):8>> || _ <- Seq >>. random_binaries(N) when N > 0 -> random_binary(), random_binaries(N - 1); random_binaries(_) -> ok. tracer(Parent, N) -> receive Msg -> case Msg of done -> Parent ! {self(),N}; _ -> tracer(Parent, N+1) end end.