%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2000-2010. 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%
%%
-module(bs_construct_SUITE).
-export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2,
init_per_testcase/2,end_per_testcase/2,
init_per_suite/1,end_per_suite/1,
test1/1, test2/1, test3/1, test4/1, test5/1, testf/1, not_used/1, in_guard/1,
coerce_to_float/1]).
-include_lib("test_server/include/test_server.hrl").
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
cases().
groups() ->
[].
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
cases() ->
[test1, test2, test3, test4, test5, testf, not_used,
in_guard, coerce_to_float].
init_per_testcase(_Case, Config) ->
test_lib:interpret(?MODULE),
Dog = test_server:timetrap(?t:minutes(1)),
[{watchdog,Dog}|Config].
end_per_testcase(_Case, Config) ->
Dog = ?config(watchdog, Config),
?t:timetrap_cancel(Dog),
ok.
init_per_suite(Config) when is_list(Config) ->
?line test_lib:interpret(?MODULE),
?line true = lists:member(?MODULE, int:interpreted()),
Config.
end_per_suite(Config) when is_list(Config) ->
ok.
big(1) ->
57285702734876389752897683.
i(X) -> X.
r(L) ->
lists:reverse(L).
-define(T(B, L), {B, ??B, L}).
-define(N(B), {B, ??B, unknown}).
-define(FAIL(Expr), ?line {'EXIT',{badarg,_}} = (catch Expr)).
l(I_13, I_big1) ->
[
?T(<<-43>>,
[256-43]),
?T(<<56>>,
[56]),
?T(<<1,2>>,
[1, 2]),
?T(<<4:4, 7:4>>,
[4*16+7]),
?T(<<777:16/big>>,
[3, 9]),
?T(<<777:16/little>>,
[9, 3]),
?T(<<0.0:32/float>>,
[0,0,0,0]),
?T(<<0.125:32/float>>,
[62,0,0,0]),
?T(<<0.125:32/little-float>>,
[0,0,0,62]),
?T(<<I_big1:32>>,
[138, 99, 0, 147]),
?T(<<57285702734876389752897684:32>>,
[138, 99, 0, 148]),
?T(<<I_big1:32/little>>,
r([138, 99, 0, 147])),
?T(<<-1:17/unit:8>>,
lists:duplicate(17, 255)),
?T(<<I_13>>,
[13]),
?T(<<4:8/unit:2,5:2/unit:8>>,
[0, 4, 0, 5]),
?T(<<1:1, 0:6, 1:1>>,
[129]),
?T(<<1:1/little, 0:6/little, 1:1/little>>,
[129]),
?T(<<<<1,2>>/binary>>,
[1, 2]),
?T(<<<<1,2>>:1/binary>>,
[1]),
?T(<<4,3,<<1,2>>:1/binary>>,
[4,3,1]),
?T(<<(256*45+47)>>,
[47]),
?T(<<57:0>>,
[]),
?T(<<"apa">>,
"apa"),
?T(<<1:3,"string",9:5>>,
[46,110,142,77,45,204,233]),
?T(<<>>,
[]),
?T(<<37.98:64/native-float>>,
native_3798()),
?T(<<32978297842987249827298387697777669766334937:128/native-integer>>,
native_bignum())
].
native_3798() ->
case <<1:16/native>> of
<<0,1>> -> [64,66,253,112,163,215,10,61];
<<1,0>> -> [61,10,215,163,112,253,66,64]
end.
native_bignum() ->
case <<1:16/native>> of
<<0,1>> -> [129,205,18,177,1,213,170,101,39,231,109,128,176,11,73,217];
<<1,0>> -> [217,73,11,176,128,109,231,39,101,170,213,1,177,18,205,129]
end.
evaluate(Str, Vars) ->
{ok,Tokens,_} =
erl_scan:string(Str ++ " . "),
{ok, [Expr]} = erl_parse:parse_exprs(Tokens),
case erl_eval:expr(Expr, Vars) of
{value, Result, _} ->
Result
end.
eval_list([], _Vars) ->
[];
eval_list([{C_bin, Str, Bytes} | Rest], Vars) ->
case catch evaluate(Str, Vars) of
{'EXIT', Error} ->
io:format("Evaluation error: ~p, ~p, ~p~n", [Str, Vars, Error]),
exit(Error);
E_bin ->
[{C_bin, E_bin, Str, Bytes} | eval_list(Rest, Vars)]
end.
one_test({C_bin, E_bin, Str, Bytes}) when list(Bytes) ->
io:format(" ~s, ~p~n", [Str, Bytes]),
Bin = list_to_binary(Bytes),
if
C_bin == Bin ->
ok;
true ->
io:format("ERROR: Compiled: ~p. Expected ~p. Got ~p.~n",
[Str, Bytes, binary_to_list(C_bin)]),
test_server:fail(comp)
end,
if
E_bin == Bin ->
ok;
true ->
io:format("ERROR: Interpreted: ~p. Expected ~p. Got ~p.~n",
[Str, Bytes, binary_to_list(E_bin)]),
test_server:fail(comp)
end;
one_test({C_bin, E_bin, Str, Result}) ->
io:format(" ~s ~p~n", [Str, C_bin]),
if
C_bin == E_bin ->
ok;
true ->
Arbitrary = case Result of
unknown ->
size(C_bin);
_ ->
Result
end,
case equal_lists(binary_to_list(C_bin),
binary_to_list(E_bin),
Arbitrary) of
false ->
io:format("ERROR: Compiled not equal to interpreted:"
"~n ~p, ~p.~n",
[binary_to_list(C_bin), binary_to_list(E_bin)]),
test_server:fail(comp);
0 ->
ok;
%% For situations where the final bits may not matter, like
%% for floats:
N when integer(N) ->
io:format("Info: compiled and interpreted differ in the"
" last bytes:~n ~p, ~p.~n",
[binary_to_list(C_bin), binary_to_list(E_bin)]),
ok
end
end.
equal_lists([], [], _) ->
0;
equal_lists([], _, _) ->
false;
equal_lists(_, [], _) ->
false;
equal_lists([A|AR], [A|BR], R) ->
equal_lists(AR, BR, R);
equal_lists(A, B, R) ->
if
length(A) /= length(B) ->
false;
length(A) =< R ->
R;
true ->
false
end.
%%% Simple working cases
test1(suite) -> [];
test1(Config) when list(Config) ->
?line I_13 = i(13),
?line I_big1 = big(1),
?line Vars = [{'I_13', I_13},
{'I_big1', I_big1}],
?line lists:foreach(fun one_test/1, eval_list(l(I_13, I_big1), Vars)).
%%% Misc
%%% <<A:S, A:(N-S)>>
comp(N, A, S) ->
M1 = (1 bsl S) - 1,
M2 = (1 bsl (N-S)) - 1,
[((A band M1) bsl (N-S)) bor (A band M2)].
gen(N, S, A) ->
[?T(<<A:S, A:(N-S)>>, comp(N, A, S))].
gen_l(N, S, A) ->
[?T(<<A:S/little, A:(N-S)/little>>, comp(N, A, S))].
test2(suite) -> [];
test2(Config) when list(Config) ->
?line test2(0, 8, 2#10101010101010101),
?line test2(0, 8, 2#1111111111).
test2(End, End, _) ->
ok;
test2(I, End, A) ->
test2(I, A),
test2(I+1, End, A).
test2(S, A) ->
N = 8,
Vars = [{'A',A}, {'N',N}, {'S',S}],
io:format("Vars: ~p\n", [Vars]),
lists:foreach(fun one_test/1, eval_list(gen(N, S, A), Vars)),
lists:foreach(fun one_test/1, eval_list(gen_l(N, S, A), Vars)).
%%% Tests without facit
t3() ->
[?N(<<4711:13, 9876:13, 3:6>>),
?N(<<4.57:64/float>>),
?N(<<4.57:32/float>>),
?N(<<>>)
].
test3(suite) -> [];
test3(Config) when list(Config) ->
?line Vars = [],
?line lists:foreach(fun one_test/1, eval_list(t3(), Vars)).
gen_u(N, S, A) ->
[?N(<<A:S, A:(N-S)>>)].
gen_u_l(N, S, A) ->
[?N(<<A:S/little, A:(N-S)/little>>)].
test4(suite) -> [];
test4(Config) when list(Config) ->
?line test4(0, 16, 2#10101010101010101),
?line test4(0, 16, 2#1111111111).
test4(End, End, _) ->
ok;
test4(I, End, A) ->
test4(I, A),
test4(I+1, End, A).
test4(S, A) ->
N = 16,
Vars = [{'A', A}, {'N', 16}, {'S', S}],
lists:foreach(fun one_test/1, eval_list(gen_u(N, S, A), Vars)),
lists:foreach(fun one_test/1, eval_list(gen_u_l(N, S, A), Vars)).
gen_b(N, S, A) ->
[?T(<<A:S/binary-unit:1, A:(N-S)/binary-unit:1>>,
binary_to_list(<<A:S/binary-unit:1, A:(N-S)/binary-unit:1>>))].
test5(suite) -> [];
test5(doc) -> ["OTP-3995"];
test5(Config) when list(Config) ->
?line test5(0, 8, <<73>>),
?line test5(0, 8, <<68>>).
test5(End, End, _) ->
ok;
test5(I, End, A) ->
test5(I, A),
test5(I+1, End, A).
test5(S, A) ->
N = 8,
Vars = [{'A', A}, {'N', 8}, {'S', S}],
lists:foreach(fun one_test/1, eval_list(gen_b(N, S, A), Vars)).
%%% Failure cases
testf(suite) -> [];
testf(Config) when list(Config) ->
?FAIL(<<3.14>>),
?FAIL(<<<<1,2>>>>),
?FAIL(<<2.71/binary>>),
?FAIL(<<24334/binary>>),
?FAIL(<<24334344294788947129487129487219847/binary>>),
?FAIL(<<<<1,2,3>>/float>>),
%% Negative field widths.
testf_1(-8, <<1,2,3,4,5>>),
?FAIL(<<42:(-16)>>),
?FAIL(<<3.14:(-8)/float>>),
?FAIL(<<<<23,56,0,2>>:(-16)/binary>>),
?FAIL(<<<<23,56,0,2>>:(2.5)/binary>>),
?FAIL(<<<<23,56,0,2>>:(anka)>>),
ok.
testf_1(W, B) ->
?FAIL(<<42:W>>),
?FAIL(<<3.14:W/float>>),
?FAIL(<<B:W/binary>>).
not_used(doc) ->
"Test that constructed binaries that are not used will still give an exception.";
not_used(Config) when is_list(Config) ->
?line ok = not_used1(3, <<"dum">>),
?line ?FAIL(not_used1(3, "dum")),
?line ?FAIL(not_used2(444, -2)),
?line ?FAIL(not_used2(444, anka)),
?line ?FAIL(not_used3(444)),
ok.
not_used1(I, BinString) ->
<<I:32,BinString/binary>>,
ok.
not_used2(I, Sz) ->
<<I:Sz>>,
ok.
not_used3(I) ->
<<I:(-8)>>,
ok.
in_guard(Config) when list(Config) ->
?line 1 = in_guard(<<16#74ad:16>>, 16#e95, 5),
?line 2 = in_guard(<<16#3A,16#F7,"hello">>, 16#3AF7, <<"hello">>),
?line 3 = in_guard(<<16#FBCD:14,3.1415/float,3:2>>, 16#FBCD, 3.1415),
nope = in_guard(<<1>>, 42, b),
nope = in_guard(<<1>>, a, b),
nope = in_guard(<<1,2>>, 1, 1),
nope = in_guard(<<4,5>>, 1, 2.71),
nope = in_guard(<<4,5>>, 1, <<12,13>>),
ok.
in_guard(Bin, A, B) when <<A:13,B:3>> == Bin -> 1;
in_guard(Bin, A, B) when <<A:16,B/binary>> == Bin -> 2;
in_guard(Bin, A, B) when <<A:14,B/float,3:2>> == Bin -> 3;
in_guard(Bin, A, B) when {a,b,<<A:14,B/float,3:2>>} == Bin -> cant_happen;
in_guard(_, _, _) -> nope.
-define(COF(Int0),
?line (fun(Int) ->
true = <<Int:32/float>> =:= <<(float(Int)):32/float>>,
true = <<Int:64/float>> =:= <<(float(Int)):64/float>>
end)(nonliteral(Int0)),
?line true = <<Int0:32/float>> =:= <<(float(Int0)):32/float>>,
?line true = <<Int0:64/float>> =:= <<(float(Int0)):64/float>>).
-define(COF64(Int0),
?line (fun(Int) ->
true = <<Int:64/float>> =:= <<(float(Int)):64/float>>
end)(nonliteral(Int0)),
?line true = <<Int0:64/float>> =:= <<(float(Int0)):64/float>>).
nonliteral(X) -> X.
coerce_to_float(Config) when list(Config) ->
?COF(0),
?COF(-1),
?COF(1),
?COF(42),
?COF(255),
?COF(-255),
?COF(38474),
?COF(387498738948729893849444444443),
?COF(-37489378937773899999999999999993),
?COF64(298748888888888888888888888883478264866528467367364766666666666666663),
?COF64(-367546729879999999999947826486652846736736476555566666663),
ok.
