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Diffstat (limited to 'erts/emulator/test/bs_bincomp_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/bs_bincomp_SUITE.erl | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/erts/emulator/test/bs_bincomp_SUITE.erl b/erts/emulator/test/bs_bincomp_SUITE.erl new file mode 100644 index 0000000000..4e83d97689 --- /dev/null +++ b/erts/emulator/test/bs_bincomp_SUITE.erl @@ -0,0 +1,130 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2006-2009. All Rights Reserved. +%% +%% The contents of this file are subject to the Erlang Public License, +%% Version 1.1, (the "License"); you may not use this file except in +%% compliance with the License. You should have received a copy of the +%% Erlang Public License along with this software. If not, it can be +%% retrieved online at http://www.erlang.org/. +%% +%% Software distributed under the License is distributed on an "AS IS" +%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +%% the License for the specific language governing rights and limitations +%% under the License. +%% +%% %CopyrightEnd% +%% + +%% Originally based on Per Gustafsson's test suite. +%% + +-module(bs_bincomp_SUITE). + +-export([all/1, + byte_aligned/1,bit_aligned/1,extended_byte_aligned/1, + extended_bit_aligned/1,mixed/1,tracing/1]). + +-include("test_server.hrl"). + +all(suite) -> + [byte_aligned,bit_aligned,extended_byte_aligned, + extended_bit_aligned,mixed,tracing]. + + +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], + << <<($a + random:uniform($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. |