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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2004-2010. 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(ei_decode_SUITE).

-include_lib("test_server/include/test_server.hrl").
-include("ei_decode_SUITE_data/ei_decode_test_cases.hrl").

-export(
   [
all/0, suite/0,groups/0,init_per_group/2,end_per_group/2,
    test_ei_decode_long/1,
    test_ei_decode_ulong/1,
    test_ei_decode_longlong/1,
    test_ei_decode_ulonglong/1,
    test_ei_decode_char/1,
    test_ei_decode_nonoptimal/1,
    test_ei_decode_misc/1
   ]).

suite() -> [{suite_callbacks,[ts_install_scb]}].

all() -> 
[test_ei_decode_long, test_ei_decode_ulong,
 test_ei_decode_longlong, test_ei_decode_ulonglong,
 test_ei_decode_char, test_ei_decode_nonoptimal,
 test_ei_decode_misc].

groups() -> 
    [].

init_per_group(_GroupName, Config) ->
	Config.

end_per_group(_GroupName, Config) ->
	Config.


%% ---------------------------------------------------------------------------

% NOTE: for historical reasons we don't pach as tight as we can,
%       we only fill 27 bits in 32 bit INTEGER_EXT 


%% ######################################################################## %%

test_ei_decode_long(suite) -> [];
test_ei_decode_long(Config) when is_list(Config) ->
    ?line P = runner:start(?test_ei_decode_long),
    send_integers(P),
    ?line runner:recv_eot(P),
    ok.


%% ######################################################################## %%

test_ei_decode_ulong(suite) -> [];
test_ei_decode_ulong(Config) when is_list(Config) ->
    ?line P = runner:start(?test_ei_decode_ulong),
    send_integers(P),
    ?line runner:recv_eot(P),
    ok.


% (*) In practical terms, other values may fit into the ext format
% i32 is signed 32 bit on C side
% u32 is unsigned 32 bit on C side
 
%% ######################################################################## %%

test_ei_decode_longlong(suite) -> [];
test_ei_decode_longlong(Config) when is_list(Config) ->
    case os:type() of
	vxworks ->
	    {skip,"Skipped on VxWorks"};
	_ ->
	    ?line P = runner:start(?test_ei_decode_longlong),
	    send_integers2(P),
	    ?line runner:recv_eot(P),
	    ok
    end.


%% ######################################################################## %%

test_ei_decode_ulonglong(suite) -> [];
test_ei_decode_ulonglong(Config) when is_list(Config) ->
    case os:type() of
	vxworks ->
	    {skip,"Skipped on VxWorks"};
	_ ->
	    ?line P = runner:start(?test_ei_decode_ulonglong),
	    send_integers2(P),
	    ?line runner:recv_eot(P),
	    ok
    end.


%% ######################################################################## %%
%% A "character" for us is an 8 bit integer, alwasy positive, i.e.
%% it is unsigned.
%% FIXME maybe the API should change to use "unsigned char" to be clear?!

test_ei_decode_char(suite) -> [];
test_ei_decode_char(Config) when is_list(Config) ->
    ?line P = runner:start(?test_ei_decode_char),

    ?line send_term_as_binary(P,0),
    ?line send_term_as_binary(P,16#7f),
    ?line send_term_as_binary(P,16#ff),

    ?line send_term_as_binary(P, []), % illegal type

    ?line runner:recv_eot(P),
    ok.


%% ######################################################################## %%

test_ei_decode_nonoptimal(suite) -> [];
test_ei_decode_nonoptimal(Config) when is_list(Config) ->
    ?line P = runner:start(?test_ei_decode_nonoptimal),

    send_non_optimal_pos(P),			% decode_char
    send_non_optimal(P),			% decode_long
    send_non_optimal_pos(P),			% decode_ulong
    case os:type() of
	vxworks ->
	    ok;
	_ ->
	    send_non_optimal(P),			% decode_longlong
	    send_non_optimal_pos(P)			% decode_ulonglong
    end,

    ?line runner:recv_eot(P),
    ok.


send_non_optimal(P) ->
    send_non_optimal_pos(P),
    send_non_optimal_neg(P).

send_non_optimal_pos(P) ->
    ?line send_raw(P, <<131,97,42>>),
    ?line send_raw(P, <<131,98,42:32>>),
    ?line send_raw(P, <<131,110,1,0,42>>),
    ?line send_raw(P, <<131,110,2,0,42,0>>),
    ?line send_raw(P, <<131,110,4,0,42,0,0,0>>),
    ?line send_raw(P, <<131,111,0,0,0,1,0,42>>),
    ?line send_raw(P, <<131,111,0,0,0,2,0,42,0>>),
    ?line send_raw(P, <<131,111,0,0,0,3,0,42,0,0>>),
    ?line send_raw(P, <<131,111,0,0,0,6,0,42,0,0,0,0,0>>),
    ok.

send_non_optimal_neg(P) ->
%   ?line send_raw(P, <<131,97,-42>>),
    ?line send_raw(P, <<131,98,-42:32>>),
    ?line send_raw(P, <<131,110,1,1,42>>),
    ?line send_raw(P, <<131,110,2,1,42,0>>),
    ?line send_raw(P, <<131,110,4,1,42,0,0,0>>),
    ?line send_raw(P, <<131,111,0,0,0,1,1,42>>),
    ?line send_raw(P, <<131,111,0,0,0,2,1,42,0>>),
    ?line send_raw(P, <<131,111,0,0,0,3,1,42,0,0>>),
    ?line send_raw(P, <<131,111,0,0,0,6,1,42,0,0,0,0,0>>),
    ok.


%% ######################################################################## %%

test_ei_decode_misc(suite) -> [];
test_ei_decode_misc(Config) when is_list(Config) ->
    ?line P = runner:start(?test_ei_decode_misc),

    ?line send_term_as_binary(P,0.0),
    ?line send_term_as_binary(P,-1.0),
    ?line send_term_as_binary(P,1.0),

    ?line send_term_as_binary(P,false),
    ?line send_term_as_binary(P,true),

    ?line send_term_as_binary(P,foo),
    ?line send_term_as_binary(P,''),
    ?line send_term_as_binary(P,'������'),

    ?line send_term_as_binary(P,"foo"),
    ?line send_term_as_binary(P,""),
    ?line send_term_as_binary(P,"������"),

    ?line send_term_as_binary(P,<<"foo">>),
    ?line send_term_as_binary(P,<<>>),
    ?line send_term_as_binary(P,<<"������">>),

%    ?line send_term_as_binary(P,{}),
%    ?line send_term_as_binary(P,[]),

    ?line runner:recv_eot(P),
    ok.


%% ######################################################################## %%

send_term_as_binary(Port, Term) when is_port(Port) ->
    Port ! {self(), {command, term_to_binary(Term)}}.

send_raw(Port, Bin) when is_port(Port) ->
    Port ! {self(), {command, Bin}}.


send_integers(P) ->
    ?line send_term_as_binary(P,0),		% SMALL_INTEGER_EXT smallest
    ?line send_term_as_binary(P,255),		% SMALL_INTEGER_EXT largest
    ?line send_term_as_binary(P,256),		% INTEGER_EXT smallest pos (*)
    ?line send_term_as_binary(P,-1),		% INTEGER_EXT largest  neg 

    ?line send_term_as_binary(P, 16#07ffffff),	% INTEGER_EXT old largest (28 bits)
    ?line send_term_as_binary(P,-16#08000000),	% INTEGER_EXT old smallest
    ?line send_term_as_binary(P, 16#08000000),  % SMALL_BIG_EXT old smallest pos(*)
    ?line send_term_as_binary(P,-16#08000001),	% SMALL_BIG_EXT old largest neg (*)

    ?line send_term_as_binary(P, 16#7fffffff),	% INTEGER_EXT new largest (32 bits)
    ?line send_term_as_binary(P,-16#80000000),	% INTEGER_EXT new smallest (32 bis)
    ?line send_term_as_binary(P, 16#80000000),  % SMALL_BIG_EXT new smallest pos(*)
    ?line send_term_as_binary(P,-16#80000001),	% SMALL_BIG_EXT new largest neg (*)
 
    case erlang:system_info({wordsize,external}) of
	4 ->	 
          ?line send_term_as_binary(P, 16#80000000),% SMALL_BIG_EXT u32
          ?line send_term_as_binary(P, 16#ffffffff),% SMALL_BIG_EXT largest u32

          ?line send_term_as_binary(P, 16#7fffffffffff), % largest  i48
          ?line send_term_as_binary(P,-16#800000000000), % smallest i48
          ?line send_term_as_binary(P, 16#ffffffffffff), % largest  u48
          ?line send_term_as_binary(P, 16#7fffffffffffffff), % largest  i64
          ?line send_term_as_binary(P,-16#8000000000000000), % smallest i64
          ?line send_term_as_binary(P, 16#ffffffffffffffff); % largest  u64
	8 ->
          ?line send_term_as_binary(P, 16#8000000000000000),% SMALL_BIG_EXT u64
	  % SMALL_BIG_EXT largest u64
          ?line send_term_as_binary(P, 16#ffffffffffffffff),
	  % largest  i96
          ?line send_term_as_binary(P, 16#7fffffffffffffffffffffff), 
	  % smallest i96
          ?line send_term_as_binary(P,-16#800000000000000000000000), 
	  % largest  u96
          ?line send_term_as_binary(P, 16#ffffffffffffffffffffffff), 
	  % largest  i128
          ?line send_term_as_binary(P, 16#7fffffffffffffffffffffffffffffff), 
	  % smallest i128
          ?line send_term_as_binary(P,-16#80000000000000000000000000000000),
	  % largest  u128 
          ?line send_term_as_binary(P, 16#ffffffffffffffffffffffffffffffff) 
    end,
    ?line send_term_as_binary(P, []), % illegal type
    ok.

send_integers2(P) ->
    ?line send_term_as_binary(P,0),		% SMALL_INTEGER_EXT smallest
    ?line send_term_as_binary(P,255),		% SMALL_INTEGER_EXT largest
    ?line send_term_as_binary(P,256),		% INTEGER_EXT smallest pos (*)
    ?line send_term_as_binary(P,-1),		% INTEGER_EXT largest  neg 
    
    ?line send_term_as_binary(P, 16#07ffffff),	% INTEGER_EXT old largest (28 bits)
    ?line send_term_as_binary(P,-16#08000000),	% INTEGER_EXT old smallest 
    ?line send_term_as_binary(P, 16#08000000),  % SMALL_BIG_EXT old smallest pos(*)
    ?line send_term_as_binary(P,-16#08000001),	% SMALL_BIG_EXT old largest neg (*)

    ?line send_term_as_binary(P, 16#7fffffff),	% INTEGER_EXT new largest (32 bits)
    ?line send_term_as_binary(P,-16#80000000),	% INTEGER_EXT new smallest
    ?line send_term_as_binary(P, 16#80000000),  % SMALL_BIG_EXT new smallest pos(*)
    ?line send_term_as_binary(P,-16#80000001),	% SMALL_BIG_EXT new largest neg (*)

    ?line send_term_as_binary(P, 16#ffffffff),% SMALL_BIG_EXT largest u32

    ?line send_term_as_binary(P, 16#7fffffffffff), % largest  i48
    ?line send_term_as_binary(P,-16#800000000000), % smallest i48
    ?line send_term_as_binary(P, 16#ffffffffffff), % largest  u48
    ?line send_term_as_binary(P, 16#7fffffffffffffff), % largest  i64
    ?line send_term_as_binary(P,-16#8000000000000000), % smallest i64
    ?line send_term_as_binary(P, 16#ffffffffffffffff), % largest  u64
    ?line send_term_as_binary(P, []), % illegal type
    ok.