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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2012. 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%
%%

%%%-------------------------------------------------------------------
%%% File: ct_pre_post_test_io_SUITE
%%%
%%% Description:
%%%
%%% Test that ct:log/2 printouts and error/progress reports that happen
%%% before or after the test run are saved in the pre/post test IO log.
%%%-------------------------------------------------------------------
-module(ct_pre_post_test_io_SUITE).

-compile(export_all).

-include_lib("common_test/include/ct.hrl").
-include_lib("common_test/include/ct_event.hrl").

-define(eh, ct_test_support_eh).

%%--------------------------------------------------------------------
%% TEST SERVER CALLBACK FUNCTIONS
%%--------------------------------------------------------------------

%%--------------------------------------------------------------------
%% Description: Since Common Test starts another Test Server
%% instance, the tests need to be performed on a separate node (or
%% there will be clashes with logging processes etc).
%%--------------------------------------------------------------------
init_per_suite(Config) ->
    DataDir = ?config(data_dir, Config),
    CTH = filename:join(DataDir, "cth_ctrl.erl"),
    ct:pal("Compiling ~p: ~p",
	   [CTH,compile:file(CTH,[{outdir,DataDir},debug_info])]),
    ct_test_support:init_per_suite([{path_dirs,[DataDir]},
				    {start_sasl,true} | Config]).

end_per_suite(Config) ->
    ct_test_support:end_per_suite(Config).

init_per_testcase(TestCase, Config) ->
    ct_test_support:init_per_testcase(TestCase, Config).

end_per_testcase(TestCase, Config) ->
    ct_test_support:end_per_testcase(TestCase, Config).

suite() -> [{ct_hooks,[ts_install_cth]}].

all() ->
    [
     pre_post_io
    ].

%%--------------------------------------------------------------------
%% TEST CASES
%%--------------------------------------------------------------------

%%%-----------------------------------------------------------------
%%%
pre_post_io(Config) ->
    TC = pre_post_io,
    DataDir = ?config(data_dir, Config),
    Suite = filename:join(DataDir, "dummy_SUITE"),
    {Opts,ERPid} = setup([{suite,Suite},{label,TC},{ct_hooks,[cth_ctrl]}],
			 Config),
    
    %%!--------------------------------------------------------------------
    %%! Note that error reports will not start showing up in the pre-test
    %%! io log until handle_remote_events has been set to true (see below).
    %%! The reason is that the error logger has its group leader on the
    %%! test_server node (not the ct node) and cth_log_redirect ignores
    %%! events with remote destination until told otherwise.
    %%!--------------------------------------------------------------------

    spawn(fun() ->
		  %% --- test run 1 ---
		  ct:sleep(3000),
		  ct_test_support:ct_rpc({cth_log_redirect,
					  handle_remote_events,
					  [true]}, Config),
		  ct:sleep(2000),
		  io:format(user, "Starting test run!~n", []),
		  ct_test_support:ct_rpc({cth_ctrl,proceed,[]}, Config),
		  ct:sleep(6000),
		  io:format(user, "Finishing off!~n", []),
		  ct_test_support:ct_rpc({cth_ctrl,proceed,[]}, Config),
		  %% --- test run 2 ---
		  ct:sleep(3000),
		  ct_test_support:ct_rpc({cth_log_redirect,
					  handle_remote_events,
					  [true]}, Config),
		  ct:sleep(2000),
		  io:format(user, "Starting test run!~n", []),
		  ct_test_support:ct_rpc({cth_ctrl,proceed,[]}, Config),
		  ct:sleep(6000),
		  io:format(user, "Finishing off!~n", []),
		  ct_test_support:ct_rpc({cth_ctrl,proceed,[]}, Config)
	  end),
    ct_test_support:run(Opts, Config),
    Events = ct_test_support:get_events(ERPid, Config),
    ct_test_support:log_events(TC,
			       reformat(Events, ?eh),
			       ?config(priv_dir, Config),
			       Opts),
    TestEvents = events_to_check(TC),
    ok = ct_test_support:verify_events(TestEvents, Events, Config),
    
    LogDirs = lists:flatmap(fun({_EH,#event{name=start_logging,data=Dir}}) ->
				    [Dir];
			       (_) ->
				    []
			    end, Events),
    PrePostIoFiles =
	[filename:join(LogDir, "misc_io.log.html") || LogDir <- LogDirs],
    lists:foreach(
      fun(PrePostIoFile) ->
	      ct:log("Reading Pre/Post Test IO Log file: ~ts", [PrePostIoFile]),
	      {ok,Bin} = file:read_file(PrePostIoFile),
	      Ts = string:tokens(binary_to_list(Bin),[$\n]),
	      PrePostIOEntries =
		  lists:foldl(fun([$L,$o,$g,$g,$e,$r|_],
				  {pre,PreLogN,PreErrN,0,0}) ->
				      {pre,PreLogN+1,PreErrN,0,0};
				 ([$=,$E,$R,$R,$O,$R|_],
				  {pre,PreLogN,PreErrN,0,0}) ->
				      {pre,PreLogN,PreErrN+1,0,0};
				 ([_,_,_,_,$P,$O,$S,$T,$-,$T,$E,$S,$T|_],
				  {pre,PreLogN,PreErrN,0,0}) ->
				      {post,PreLogN,PreErrN,0,0};
				 ([$L,$o,$g,$g,$e,$r|_],
				  {post,PreLogN,PreErrN,PostLogN,PostErrN}) ->
				      {post,PreLogN,PreErrN,PostLogN+1,PostErrN};
				 ([$=,$E,$R,$R,$O,$R|_],
				  {post,PreLogN,PreErrN,PostLogN,PostErrN}) ->
				      {post,PreLogN,PreErrN,PostLogN,PostErrN+1};
				 (_, Counters) ->
				      Counters
			      end, {pre,0,0,0,0}, Ts),
	      [_|Counters] = tuple_to_list(PrePostIOEntries),
	      ct:log("Entries in the Pre/Post Test IO Log: ~p", [Counters]),
	      case [C || C <- Counters, C < 2] of
		  [] ->
		      ok;
		  _ ->
		      exit("Not enough entries in the Pre/Post Test IO Log!")
	      end
      end, PrePostIoFiles), 

    UnexpIoFiles =
	[filelib:wildcard(
	   filename:join(LogDir,
			 "*dummy_SUITE.logs/run.*/"
			 "unexpected_io.log.html")) || LogDir <- LogDirs],
    lists:foreach(
      fun(UnexpIoFile) ->
	      ct:log("Reading Unexpected IO Log file: ~ts", [UnexpIoFile]),
	      {ok,Bin} = file:read_file(UnexpIoFile),
	      Ts = string:tokens(binary_to_list(Bin),[$\n]),
	      UnexpIOEntries =
		  lists:foldl(fun([$L,$o,$g,$g,$e,$r|_], [LogN,ErrN]) ->
				      [LogN+1,ErrN];
				 ([$=,$E,$R,$R,$O,$R|_], [LogN,ErrN]) ->
				      [LogN,ErrN+1];
				 (_, Counters) -> Counters
			      end, [0,0], Ts),
	      ct:log("Entries in the Unexpected IO Log: ~p", [UnexpIOEntries]),
	      case [N || N <- UnexpIOEntries, N < 2] of
		  [] ->
		      ok;
		  _ ->
		      exit("Not enough entries in the Unexpected IO Log!")
	      end
      end, UnexpIoFiles),
    ok.

%%%-----------------------------------------------------------------
%%% HELP FUNCTIONS
%%%-----------------------------------------------------------------

setup(Test, Config) ->
    Opts0 = ct_test_support:get_opts(Config),
    Level = ?config(trace_level, Config),
    EvHArgs = [{cbm,ct_test_support},{trace_level,Level}],
    Opts = Opts0 ++ [{event_handler,{?eh,EvHArgs}}|Test],
    ERPid = ct_test_support:start_event_receiver(Config),
    {Opts,ERPid}.

reformat(Events, EH) ->
    ct_test_support:reformat(Events, EH).

%%%-----------------------------------------------------------------
%%% TEST EVENTS
%%%-----------------------------------------------------------------

events_to_check(pre_post_io) ->
    [
     {?eh,start_logging,{'DEF','RUNDIR'}},
     {?eh,test_start,{'DEF',{'START_TIME','LOGDIR'}}},
     {?eh,start_info,{1,1,7}},
     {?eh,tc_start,{dummy_SUITE,init_per_suite}},
     {?eh,tc_done,{dummy_SUITE,init_per_suite,ok}},
     {parallel,
      [{?eh,tc_start,{dummy_SUITE,{init_per_group,g1,[parallel]}}},
       {?eh,tc_done,
	{dummy_SUITE,{init_per_group,g1,[parallel]},ok}},
       {?eh,tc_start,{dummy_SUITE,tc1}},
       {?eh,tc_start,{dummy_SUITE,tc2}},
       {?eh,tc_start,{dummy_SUITE,tc3}},
       {?eh,tc_done,{dummy_SUITE,tc2,ok}},
       {?eh,tc_done,{dummy_SUITE,tc1,ok}},
       {?eh,tc_done,{dummy_SUITE,tc3,ok}},
       {?eh,test_stats,{1,0,{0,0}}},
       {?eh,test_stats,{2,0,{0,0}}},
       {?eh,test_stats,{3,0,{0,0}}},
       {?eh,tc_start,{dummy_SUITE,{end_per_group,g1,[parallel]}}},
       {?eh,tc_done,{dummy_SUITE,{end_per_group,g1,[parallel]},ok}}]},
     {?eh,tc_start,{dummy_SUITE,tc1}},
     {?eh,tc_done,{dummy_SUITE,tc1,ok}},
     {?eh,test_stats,{4,0,{0,0}}},
     {?eh,tc_start,{dummy_SUITE,tc2}},
     {?eh,tc_done,{dummy_SUITE,tc2,ok}},
     {?eh,test_stats,{5,0,{0,0}}},
     [{?eh,tc_start,{dummy_SUITE,{init_per_group,g2,[]}}},
      {?eh,tc_done,{dummy_SUITE,{init_per_group,g2,[]},ok}},
      {?eh,tc_start,{dummy_SUITE,tc4}},
      {?eh,tc_done,{dummy_SUITE,tc4,ok}},
      {?eh,test_stats,{6,0,{0,0}}},
      {?eh,tc_start,{dummy_SUITE,tc5}},
      {?eh,tc_done,{dummy_SUITE,tc5,ok}},
      {?eh,test_stats,{7,0,{0,0}}},
      {?eh,tc_start,{dummy_SUITE,{end_per_group,g2,[]}}},
      {?eh,tc_done,{dummy_SUITE,{end_per_group,g2,[]},ok}}],
     {?eh,tc_start,{dummy_SUITE,end_per_suite}},
     {?eh,tc_done,{dummy_SUITE,end_per_suite,ok}},
     {?eh,test_done,{'DEF','STOP_TIME'}},
     {?eh,stop_logging,[]}].