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%%
%% Copyright Ericsson AB 2005-2018. 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
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%% 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
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%%
-module(apply_SUITE).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,mfa/1,fun_apply/1]).
-export([foo/0,bar/1,baz/2]).
-include_lib("common_test/include/ct.hrl").
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[mfa, fun_apply].
groups() ->
[].
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.
-define(APPLY0(M, F), (fun(Res) -> Res = M:F() end)(apply(M, F, []))).
-define(APPLY1(M, F, A1), (fun(Res) -> Res = M:F(A1) end)(apply(M, F, [A1]))).
-define(APPLY2(M, F, A1, A2), (fun(Res) -> Res = M:F(A1, A2) end)(apply(M, F, [A1,A2]))).
mfa(Config) when is_list(Config) ->
ok = ?APPLY0(?MODULE, foo),
{[a,b]} = ?APPLY1(?MODULE, bar, [a,b]),
{39,{a}} = ?APPLY2(?MODULE, baz, 39, {a}),
Mod = id(?MODULE),
ok = ?APPLY0(Mod, foo),
{[a,b]} = ?APPLY1(Mod, bar, [a,b]),
{39,{a}} = ?APPLY2(Mod, baz, 39, {a}),
ok = ?APPLY0(?MODULE, (id(foo))),
{[a,b]} = ?APPLY1(?MODULE, (id(bar)), [a,b]),
{39,{a}} = ?APPLY2(?MODULE, (id(baz)), 39, {a}),
ok = ?APPLY0(Mod, (id(foo))),
{[a,b]} = ?APPLY1(Mod, (id(bar)), [a,b]),
{39,{a}} = ?APPLY2(Mod, (id(baz)), 39, {a}),
{'EXIT',_} = (catch ?APPLY2(Mod, (id(bazzzzzz)), a, b)),
{'EXIT',_} = (catch ?APPLY2({}, baz, a, b)),
{'EXIT',_} = (catch ?APPLY2(?MODULE, [], a, b)),
ok = apply(Mod, foo, id([])),
{[a,b|c]} = apply(Mod, bar, id([[a,b|c]])),
{[xx],{a}} = apply(?MODULE, baz, id([[xx],{a}])),
Erlang = id(erlang),
Self = self(),
Self = ?APPLY0(Erlang, self),
42.0 = ?APPLY1(Erlang, abs, -42.0),
b = ?APPLY2(Erlang, element, 2, {a,b,c}),
true = ?APPLY1(Erlang, is_function, fun erlang:list_to_binary/1),
true = ?APPLY1(Erlang, is_function, fun() -> ok end),
false = ?APPLY1(Erlang, is_function, blurf),
true = ?APPLY2(Erlang, is_function, fun erlang:list_to_binary/1, 1),
true = ?APPLY2(Erlang, is_function, fun() -> ok end, 0),
false = ?APPLY2(Erlang, is_function, blurf, 0),
apply(Mod, foo, []).
foo() ->
ok.
bar(A) ->
{A}.
baz(A, B) ->
{A,B}.
-define(FUNAPPLY0(F), (fun(Res) -> Res = F() end)(apply(F, []))).
-define(FUNAPPLY1(F, A1), (fun(Res) -> Res = F(A1) end)(apply(F, [A1]))).
-define(FUNAPPLY2(F, A1, A2), (fun(Res) -> Res = F(A1, A2) end)(apply(F, [A1,A2]))).
fun_apply(Config) when is_list(Config) ->
Self = self(),
Self = ?FUNAPPLY0(fun() -> self() end),
Self = ?FUNAPPLY0((id(fun() -> self() end))),
ok = ?FUNAPPLY0(fun ?MODULE:foo/0),
ok = ?FUNAPPLY0((id(fun ?MODULE:foo/0))),
-42 = ?FUNAPPLY1(fun(A) -> -A end, 42),
[x,yy] = ?FUNAPPLY1((id(fun(T) -> [x|T] end)), [yy]),
{[a|b]} = ?FUNAPPLY1(fun ?MODULE:bar/1, [a|b]),
{[a|b]} = ?FUNAPPLY1((id(fun ?MODULE:bar/1)), [a|b]),
{a,b} = ?FUNAPPLY2(fun(A, B) -> {A,B} end, a, b),
{a,[b]} = ?FUNAPPLY2((id(fun(A, B) -> {A,B} end)), a, [b]),
{42,{a}} = ?FUNAPPLY2((id(fun ?MODULE:baz/2)), 42, {a}),
ok.
id(I) -> I.
