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diff --git a/lib/diameter/test/diameter_app_SUITE.erl b/lib/diameter/test/diameter_app_SUITE.erl
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+++ b/lib/diameter/test/diameter_app_SUITE.erl
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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,
+	 modules/1,
+	 exports/1,
+	 applications/1,
+	 undefined_calls/1, undefined_calls/0]).
+
+-define(APP, diameter).
+-define(A, list_to_atom).
+
+%% ===========================================================================
+
+suite() ->
+    [{timetrap, {seconds, 10}}].
+
+all() ->
+    [keys,
+     modules,
+     exports,
+     applications,
+     undefined_calls].
+
+init_per_suite(Config) ->
+    {ok, App} = diameter_util:appfile(?APP),
+    [{app, App} | Config].
+
+end_per_suite(_Config) ->
+    ok.
+
+%% ===========================================================================
+
+%% keys/1
+%%
+%% Ensure that the app file contain required keys.
+
+keys(Config) ->
+    App = fetch(app, Config),
+    [] = lists:filter(fun(K) -> not lists:keymember(K, 1, App) end,
+                      [vsn, description, modules, registered, applications]).
+
+%% modules/1
+%%
+%% Ensure that the app file module list match the installed beams.
+
+modules(Config) ->
+    Mods = fetch(modules, fetch(app, Config)),
+    Installed = installed_mods(),
+    {[], []} = {Mods -- Installed, Installed -- Mods}.
+
+installed_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).
+
+%% applications/1
+%%
+%% Ensure that each dependent application is on the code path.
+
+applications(Config) ->
+    As = fetch(applications, fetch(app, Config)),
+    [] = [A || A <- As, {error, _} <- [diameter_util:appfile(A)]].
+
+%% undefined_calls/1
+%%
+%% Ensure that no function on our application calls an undefined function.
+
+undefined_calls() ->
+    [{timetrap, {minutes, 2}}].
+
+undefined_calls(Config) ->
+    Mods = fetch(modules, fetch(app, Config)),
+
+    RootDir = code:root_dir(),
+    EbinDir = code:lib_dir(?APP, ebin),
+
+    {ok, XRef} = xref:start(make_name(xref_test_name)),
+    ok = xref:set_default(XRef, [{verbose, false}, {warnings, false}]),
+
+    XRefName = make_name(xref_name),
+    {ok, XRefName} = xref:add_release(XRef, RootDir, {name, XRefName}),
+    {ok, _} = xref:replace_application(XRef, ?APP, EbinDir),
+
+    {ok, Undefs} = xref:analyze(XRef, undefined_function_calls),
+
+    xref:stop(XRef),
+
+    [] = lists:filter(fun({{M,_,_},_}) -> lists:member(M, Mods) end, Undefs).
+
+make_name(Suf) ->
+    list_to_atom(atom_to_list(?APP) ++ "_" ++ atom_to_list(Suf)).
+
+%% ===========================================================================
+
+fetch(Key, List) ->
+    {Key, Val} = lists:keyfind(Key, 1, List),
+    Val.