%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2013. 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_bit_binaries_SUITE).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
misc/1,horrid_match/1,test_bitstr/1,test_bit_size/1,asymmetric_tests/1,
big_asymmetric_tests/1,binary_to_and_from_list/1,
big_binary_to_and_from_list/1,send_and_receive/1,
send_and_receive_alot/1]).
-include_lib("common_test/include/ct.hrl").
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
test_lib:recompile(?MODULE),
[{group,p}].
groups() ->
[{p,[parallel],
[misc,horrid_match,test_bitstr,test_bit_size,
asymmetric_tests,big_asymmetric_tests,
binary_to_and_from_list,big_binary_to_and_from_list,
send_and_receive,send_and_receive_alot]}].
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
misc(Config) when is_list(Config) ->
<<1:100>> = <<1:100>>,
{ok,ok} = {match(7),match(9)},
{ok,ok} = {match1(15),match1(31)},
ok.
match(N) ->
<<0:N>> = <<0:N>>,
ok.
match1(N) ->
<<42:N/little>> = <<42:N/little>>,
ok.
test_bit_size(Config) when is_list(Config) ->
101 = erlang:bit_size(<<1:101>>),
1001 = erlang:bit_size(<<1:1001>>),
1001 = erlang:bit_size(<<-10:1001>>),
80 = erlang:bit_size(<<1:80>>),
800 = erlang:bit_size(<<1:800>>),
Bin = <<0:16#1000000>>,
BigBin = list_to_bitstring([Bin||_ <- lists:seq(1,16#10)]++[<<1:1>>]),
16#10000001 = erlang:bit_size(BigBin),
%% Only run these on computers with lots of memory
%% HugeBin = list_to_bitstring([BigBin||_ <- lists:seq(1,16#10)]++[<<1:1>>]),
%% 16#100000011 = erlang:bit_size(HugeBin),
0 = erlang:bit_size(<<>>),
ok.
horrid_match(Config) when is_list(Config) ->
<<1:4,B:24/bitstring>> = <<1:4,42:24/little>>,
<<42:24/little>> = B,
ok.
test_bitstr(Config) when is_list(Config) ->
<<1:7,B/bitstring>> = <<1:7,<<1:1,6>>/bitstring>>,
<<1:1,6>> = B,
B = <<1:1,6>>,
ok.
asymmetric_tests(Config) when is_list(Config) ->
<<1:12>> = <<0,1:4>>,
<<0,1:4>> = <<1:12>>,
<<1:1,X/bitstring>> = <<128,255,0,0:2>>,
<<1,254,0,0:1>> = X,
X = <<1,254,0,0:1>>,
<<1:1,X1:25/bitstring>> = <<128,255,0,0:2>>,
<<1,254,0,0:1>> = X1,
X1 = <<1,254,0,0:1>>,
ok.
big_asymmetric_tests(Config) when is_list(Config) ->
<<1:875,1:12>> = <<1:875,0,1:4>>,
<<1:875,0,1:4>> = <<1:875,1:12>>,
<<1:1,X/bitstring>> = <<128,255,0,0:2,1:875>>,
<<1,254,0,0:1,1:875>> = X,
X = <<1,254,0,0:1,1:875>>,
<<1:1,X1:900/bitstring>> = <<128,255,0,0:2,1:875>>,
<<1,254,0,0:1,1:875>> = X1,
X1 = <<1,254,0,0:1,1:875>>,
ok.
binary_to_and_from_list(Config) when is_list(Config) ->
<<1,2,3,4,1:1>> = list_to_bitstring(bitstring_to_list(<<1,2,3,4,1:1>>)),
[1,2,3,4,<<1:1>>] = bitstring_to_list(<<1,2,3,4,1:1>>),
<<1:1,1,2,3,4>> = list_to_bitstring([<<1:1>>,1,2,3,4]),
[128,129,1,130,<<0:1>>] = bitstring_to_list(<<1:1,1,2,3,4>>),
ok.
big_binary_to_and_from_list(Config) when is_list(Config) ->
<<1:800,2,3,4,1:1>> =
list_to_bitstring(bitstring_to_list(<<1:800,2,3,4,1:1>>)),
[1,2,3,4|_Rest1] = bitstring_to_list(<<1,2,3,4,1:800,1:1>>),
<<1:801,1,2,3,4>> = list_to_bitstring([<<1:801>>,1,2,3,4]),
ok.
send_and_receive(Config) when is_list(Config) ->
Bin = <<1,2:7>>,
Pid = spawn_link(fun() -> receiver(Bin) end),
Pid ! {self(),<<1:7,8:5,Bin/bitstring>>},
receive
ok ->
ok
end.
receiver(Bin) ->
receive
{Pid,<<1:7,8:5,Bin/bitstring>>} ->
Pid ! ok
end.
send_and_receive_alot(Config) when is_list(Config) ->
Bin = <<1:1000001>>,
Pid = spawn_link(fun() -> receiver_alot(Bin) end),
spamalot(100,Bin,Pid).
spamalot(N,Bin,Pid) when N > 0 ->
Pid ! {self(),<<1:7,8:5,Bin/bitstring>>},
receive
ok ->
ok
end,
spamalot(N-1,Bin,Pid);
spamalot(0,_Bin,Pid) ->
Pid ! no_more,
ok.
receiver_alot(Bin) ->
receive
{Pid,<<1:7,8:5,Bin/bitstring>>} ->
Pid ! ok;
no_more -> ok
end,
receiver_alot(Bin).
