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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010-2011. 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%
+%%
+
+%%
+%% Tests based on the contents of the diameter app file.
+%%
+
+-module(diameter_app_SUITE).
+
+-export([suite/0,
+ all/0,
+ init_per_suite/1,
+ end_per_suite/1]).
+
+%% testcases
+-export([keys/1,
+ vsn/1,
+ modules/1,
+ exports/1,
+ release/1,
+ xref/1,
+ relup/1]).
+
+-include("diameter_ct.hrl").
+
+-define(A, list_to_atom).
+
+%% ===========================================================================
+
+suite() ->
+ [{timetrap, {seconds, 10}}].
+
+all() ->
+ [keys,
+ vsn,
+ modules,
+ exports,
+ release,
+ xref,
+ relup].
+
+init_per_suite(Config) ->
+ [{application, ?APP, App}] = diameter_util:consult(?APP, app),
+ [{app, App} | Config].
+
+end_per_suite(_Config) ->
+ ok.
+
+%% ===========================================================================
+%% # keys/1
+%%
+%% Ensure that the app file contains selected keys. Some of these would
+%% also be caught by other testcases.
+%% ===========================================================================
+
+keys(Config) ->
+ App = fetch(app, Config),
+ [] = lists:filter(fun(K) -> not lists:keymember(K, 1, App) end,
+ [vsn, description, modules, registered, applications]).
+
+%% ===========================================================================
+%% # vsn/1
+%%
+%% Ensure that our app version sticks to convention.
+%% ===========================================================================
+
+vsn(Config) ->
+ true = is_vsn(fetch(vsn, fetch(app, Config))).
+
+%% ===========================================================================
+%% # modules/1
+%%
+%% Ensure that the app file module list match the installed beams.
+%% ===========================================================================
+
+modules(Config) ->
+ Mods = fetch(modules, fetch(app, Config)),
+ Installed = code_mods(),
+ {[], []} = {Mods -- Installed, Installed -- Mods}.
+
+code_mods() ->
+ Dir = code:lib_dir(?APP, ebin),
+ {ok, Files} = file:list_dir(Dir),
+ [?A(lists:reverse(R)) || N <- Files, "maeb." ++ R <- [lists:reverse(N)]].
+
+%% ===========================================================================
+%% # exports/1
+%%
+%% Ensure that no module does export_all.
+%% ===========================================================================
+
+exports(Config) ->
+ Mods = fetch(modules, fetch(app, Config)),
+ [] = [M || M <- Mods, exports_all(M)].
+
+exports_all(Mod) ->
+ Opts = fetch(options, Mod:module_info(compile)),
+
+ is_list(Opts) andalso lists:member(export_all, Opts).
+
+%% ===========================================================================
+%% # release/1
+%%
+%% Ensure that it's possible to build a minimal release with our app file.
+%% ===========================================================================
+
+release(Config) ->
+ App = fetch(app, Config),
+ Rel = {release,
+ {"diameter test release", fetch(vsn, App)},
+ {erts, erlang:system_info(version)},
+ [{A, appvsn(A)} || A <- fetch(applications, App)]},
+ Dir = fetch(priv_dir, Config),
+ ok = write_file(filename:join([Dir, "diameter_test.rel"]), Rel),
+ {ok, _, []} = systools:make_script("diameter_test", [{path, [Dir]},
+ {outdir, Dir},
+ silent]).
+
+appvsn(Name) ->
+ [{application, Name, App}] = diameter_util:consult(Name, app),
+ fetch(vsn, App).
+
+%% ===========================================================================
+%% # xref/1
+%%
+%% Ensure that no function in our application calls an undefined function.
+%% ===========================================================================
+
+xref(Config) ->
+ App = fetch(app, Config),
+ Mods = fetch(modules, App) -- [diameter_codegen, diameter_dbg],
+ %% Skip modules that aren't required at runtime and that have
+ %% dependencies beyond those applications listed in the app file.
+
+ {ok, XRef} = xref:start(make_name(xref_test_name)),
+ ok = xref:set_default(XRef, [{verbose, false}, {warnings, false}]),
+
+ %% Only add our application and those it's dependent on according
+ %% to the app file. Well, almost. erts beams are also required to
+ %% stop xref from complaining about calls to module erlang, which
+ %% was previously in kernel. Erts isn't an application however, in
+ %% the sense that there's no .app file, and isn't listed in
+ %% applications. Seems less than ideal.
+ ok = lists:foreach(fun(A) -> add_application(XRef, A) end,
+ [?APP, erts | fetch(applications, App)]),
+
+ {ok, Undefs} = xref:analyze(XRef, undefined_function_calls),
+
+ xref:stop(XRef),
+
+ %% Only care about calls from our own application.
+ [] = lists:filter(fun({{M,_,_},_}) -> lists:member(M, Mods) end, Undefs).
+
+add_application(XRef, App) ->
+ add_application(XRef, App, code:lib_dir(App)).
+
+%% erts will not be in the lib directory before installation.
+add_application(XRef, erts, {error, _}) ->
+ Dir = filename:join([code:root_dir(), "erts", "preloaded", "ebin"]),
+ {ok, _} = xref:add_directory(XRef, Dir, []);
+add_application(XRef, App, Dir)
+ when is_list(Dir) ->
+ {ok, App} = xref:add_application(XRef, Dir, []).
+
+make_name(Suf) ->
+ list_to_atom(atom_to_list(?APP) ++ "_" ++ atom_to_list(Suf)).
+
+%% ===========================================================================
+%% # relup/1
+%%
+%% Ensure that we can generate release upgrade files using our appup file.
+%% ===========================================================================
+
+relup(Config) ->
+ [{Vsn, Up, Down}] = diameter_util:consult(?APP, appup),
+ true = is_vsn(Vsn),
+
+ App = fetch(app, Config),
+ Rel = [{erts, erlang:system_info(version)}
+ | [{A, appvsn(A)} || A <- fetch(applications, App)]],
+
+ Dir = fetch(priv_dir, Config),
+
+ Name = write_rel(Dir, Rel, Vsn),
+ UpFrom = acc_rel(Dir, Rel, Up),
+ DownTo = acc_rel(Dir, Rel, Down),
+
+ {[Name], [Name], UpFrom, DownTo} %% no intersections
+ = {[Name] -- UpFrom,
+ [Name] -- DownTo,
+ UpFrom -- DownTo,
+ DownTo -- UpFrom},
+
+ {ok, _, _, []} = systools:make_relup(Name, UpFrom, DownTo, [{path, [Dir]},
+ {outdir, Dir},
+ silent]).
+
+acc_rel(Dir, Rel, List) ->
+ lists:foldl(fun(T,A) -> acc_rel(Dir, Rel, T, A) end,
+ [],
+ List).
+
+acc_rel(Dir, Rel, {Vsn, _}, Acc) ->
+ [write_rel(Dir, Rel, Vsn) | Acc].
+
+%% Write a rel file and return its name.
+write_rel(Dir, [Erts | Apps], Vsn) ->
+ true = is_vsn(Vsn),
+ Name = "diameter_test_" ++ Vsn,
+ ok = write_file(filename:join([Dir, Name ++ ".rel"]),
+ {release,
+ {"diameter " ++ Vsn ++ " test release", Vsn},
+ Erts,
+ Apps}),
+ Name.
+
+%% ===========================================================================
+%% ===========================================================================
+
+fetch(Key, List) ->
+ {Key, {Key, Val}} = {Key, lists:keyfind(Key, 1, List)}, %% useful badmatch
+ Val.
+
+write_file(Path, T) ->
+ file:write_file(Path, io_lib:format("~p.", [T])).
+
+%% Is a version string of the expected form? Return the argument
+%% itself for 'false' for a useful badmatch.
+is_vsn(V) ->
+ is_list(V)
+ andalso length(V) == string:span(V, "0123456789.")
+ andalso V == string:join(string:tokens(V, [$.]), ".") %% no ".."
+ orelse {error, V}.