From 1fe894432615e35f4ecbe3a33f8ba2ded21f8096 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Thu, 10 Dec 2009 14:09:51 +0100
Subject: Test on_load functions that don't return 'ok'

---
 lib/kernel/test/code_SUITE.erl                     | 85 +++++++++++++++++++++-
 .../on_load_errors/on_load_error.erl               | 13 ++++
 2 files changed, 96 insertions(+), 2 deletions(-)
 create mode 100644 lib/kernel/test/code_SUITE_data/on_load_errors/on_load_error.erl

(limited to 'lib/kernel/test')

diff --git a/lib/kernel/test/code_SUITE.erl b/lib/kernel/test/code_SUITE.erl
index d4c32311e7..38aadac202 100644
--- a/lib/kernel/test/code_SUITE.erl
+++ b/lib/kernel/test/code_SUITE.erl
@@ -31,12 +31,17 @@
 	 where_is_file_cached/1, where_is_file_no_cache/1,
 	 purge_stacktrace/1, mult_lib_roots/1, bad_erl_libs/1,
 	 code_archive/1, code_archive2/1, on_load/1,
-	 on_load_embedded/1]).
+	 on_load_embedded/1, on_load_errors/1]).
 
 -export([init_per_testcase/2, fin_per_testcase/2, 
 	 init_per_suite/1, end_per_suite/1,
 	 sticky_compiler/1]).
 
+%% error_logger
+-export([init/1,
+	 handle_event/2, handle_call/2, handle_info/2,
+	 terminate/2]).
+
 all(suite) ->
     [set_path, get_path, add_path, add_paths, del_path,
      replace_path, load_file, load_abs, ensure_loaded,
@@ -47,7 +52,8 @@ all(suite) ->
      load_cached, start_node_with_cache, add_and_rehash,
      where_is_file_no_cache, where_is_file_cached,
      purge_stacktrace, mult_lib_roots, bad_erl_libs,
-     code_archive, code_archive2, on_load, on_load_embedded].
+     code_archive, code_archive2, on_load, on_load_embedded,
+     on_load_errors].
 
 init_per_suite(Config) ->
     %% The compiler will no longer create a Beam file if
@@ -1231,6 +1237,81 @@ is_source_dir() ->
     filename:basename(code:lib_dir(kernel)) =:= "kernel" andalso
 	filename:basename(code:lib_dir(stdlib)) =:= "stdlib".
 
+on_load_errors(Config) when is_list(Config) ->
+    Master = on_load_error_test_case_process,
+    ?line register(Master, self()),
+
+    ?line Data = filename:join([?config(data_dir, Config),"on_load_errors"]),
+    ?line ok = file:set_cwd(Data),
+    ?line up_to_date = make:all([{d,'MASTER',Master}]),
+
+    ?line do_on_load_error(an_atom),
+
+    ?line error_logger:add_report_handler(?MODULE, self()),
+
+    ?line do_on_load_error({something,terrible,is,wrong}),
+    receive
+	Any1 ->
+	    ?line {_, "The on_load function"++_,
+		   [on_load_error,
+		    {something,terrible,is,wrong},_]} = Any1
+    end,
+
+    ?line do_on_load_error(fail),		%Cause exception.
+    receive
+	Any2 ->
+	    ?line {_, "The on_load function"++_,
+		   [on_load_error,{failed,[_|_]},_]} = Any2
+    end,
+
+    %% There should be no more messages.
+    receive
+	Unexpected ->
+	    ?line ?t:fail({unexpected,Unexpected})
+    after 10 ->
+	    ok
+    end,
+
+    ok.
+
+do_on_load_error(ReturnValue) ->
+    ?line {_,Ref} = spawn_monitor(fun() ->
+					  exit(on_load_error:main())
+				  end),
+    receive {on_load_error,ErrorPid} -> ok end,
+    ?line ErrorPid ! ReturnValue,
+    receive
+	{'DOWN',Ref,process,_,Exit} ->
+	    ?line {undef,[{on_load_error,main,[]}|_]} = Exit
+    end.
+
+%%-----------------------------------------------------------------
+%% error_logger handler.
+%% (Copied from stdlib/test/proc_lib_SUITE.erl.)
+%%-----------------------------------------------------------------
+init(Tester) ->
+    {ok, Tester}.
+
+handle_event({error, _GL, {emulator, _, _}}, Tester) ->
+    {ok, Tester};
+handle_event({error, _GL, Msg}, Tester) ->
+    Tester ! Msg,
+    {ok, Tester};
+handle_event(_Event, State) ->
+    {ok, State}.
+
+handle_info(_, State) ->
+    {ok, State}.
+
+handle_call(_Query, State) -> {ok, {error, bad_query}, State}.
+
+terminate(_Reason, State) ->
+    State.
+
+%%%
+%%% Common utility functions.
+%%%
+
 start_node(Name, Param) ->
     ?t:start_node(Name, slave, [{args, Param}]).
 
diff --git a/lib/kernel/test/code_SUITE_data/on_load_errors/on_load_error.erl b/lib/kernel/test/code_SUITE_data/on_load_errors/on_load_error.erl
new file mode 100644
index 0000000000..0772050aeb
--- /dev/null
+++ b/lib/kernel/test/code_SUITE_data/on_load_errors/on_load_error.erl
@@ -0,0 +1,13 @@
+-module(on_load_error).
+-on_load(on_load/0).
+-export([main/0]).
+
+on_load() ->
+    ?MASTER ! {?MODULE,self()},
+    receive
+	fail -> erlang:error(failed);
+	Ret -> Ret
+    end.
+
+main() ->
+    ok.
-- 
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