%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 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%
%%
-module(bif_SUITE).
-include_lib("syntax_tools/include/merl.hrl").
-export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
init_per_group/2,end_per_group/2,
beam_validator/1,trunc_and_friends/1,cover_safe_bifs/1]).
suite() ->
[{ct_hooks,[ts_install_cth]}].
all() ->
[{group,p}].
groups() ->
[{p,[parallel],
[beam_validator,
trunc_and_friends,
cover_safe_bifs
]}].
init_per_suite(Config) ->
test_lib:recompile(?MODULE),
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
%% Cover code in beam_validator.
beam_validator(Config) ->
[false,Config] = food(Config),
true = is_number(42.0),
false = is_port(Config),
ok.
food(Curriculum) ->
[try
is_bitstring(functions)
catch _ ->
0
end, Curriculum].
%% Test trunc/1, round/1, floor/1, ceil/1.
trunc_and_friends(_Config) ->
Bifs = [trunc,round,floor,ceil],
Fs = trunc_and_friends_1(Bifs),
Mod = ?FUNCTION_NAME,
Calls = [begin
Atom = erl_syntax:function_name(N),
?Q("'@Atom'()")
end || N <- Fs],
Tree = ?Q(["-module('@Mod@').",
"-export([test/0]).",
"test() -> _@Calls, ok.",
"id(I) -> I."]) ++ Fs,
merl:print(Tree),
Opts = test_lib:opt_opts(?MODULE),
{ok,_Bin} = merl:compile_and_load(Tree, Opts),
Mod:test(),
ok.
trunc_and_friends_1([F|Fs]) ->
Func = list_to_atom("f"++integer_to_list(length(Fs))),
[trunc_template(Func, F)|trunc_and_friends_1(Fs)];
trunc_and_friends_1([]) -> [].
trunc_template(Func, Bif) ->
Val = 42.77,
Res = erlang:Bif(Val),
FloatRes = float(Res),
?Q("'@Func@'() ->
Var = id(_@Val@),
if _@Bif@(Var) =:= _@Res@ -> ok end,
if _@Bif@(Var) == _@FloatRes@ -> ok end,
if _@Bif@(Var) == _@Res@ -> ok end,
_@Res@ = _@Bif@(Var),
try begin _@Bif@(a), ok end
catch error:badarg -> ok end,
ok.").
cover_safe_bifs(Config) ->
_ = get(),
_ = get_keys(a),
_ = group_leader(),
_ = is_alive(),
_ = min(Config, []),
_ = nodes(),
_ = erlang:ports(),
_ = pre_loaded(),
_ = processes(),
_ = registered(),
_ = term_to_binary(Config),
ok.
