%%
%% %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_cover_SUITE
%%%
%%% Description:
%%% Test code cover analysis support
%%%
%%%-------------------------------------------------------------------
-module(ct_cover_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).
-define(suite, cover_SUITE).
-define(mod, cover_test_mod).
%%--------------------------------------------------------------------
%% 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) ->
case test_server:is_cover() of
true ->
{skip,"Test server is running cover already - skipping"};
false ->
ct_test_support:init_per_suite(Config)
end.
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) ->
Node = fullname(existing_node),
case lists:member(Node,nodes()) of
true -> rpc:call(Node,erlang,halt,[]);
false -> ok
end,
ct_test_support:end_per_testcase(TestCase, Config).
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[
default,
cover_stop_true,
cover_stop_false,
slave,
slave_start_slave,
cover_node_option,
ct_cover_add_remove_nodes,
otp_9956
].
%%--------------------------------------------------------------------
%% TEST CASES
%%--------------------------------------------------------------------
%% Check that cover is collected from test node
%% Also check that cover is by default stopped after test is completed
default(Config) ->
{ok,Events} = run_test(default,Config),
false = check_cover(Config),
check_calls(Events,1),
ok.
%% Check that cover is stopped when cover_stop option is set to true
cover_stop_true(Config) ->
{ok,_Events} = run_test(cover_stop_true,[{cover_stop,true}],Config),
false = check_cover(Config).
%% Check that cover is not stopped when cover_stop option is set to false
cover_stop_false(Config) ->
{ok,_Events} = run_test(cover_stop_false,[{cover_stop,false}],Config),
{true,[],[?mod]} = check_cover(Config),
CTNode = proplists:get_value(ct_node, Config),
ok = rpc:call(CTNode,cover,stop,[]),
false = check_cover(Config),
ok.
%% Let test node start a slave node - check that cover is collected
%% from both nodes
slave(Config) ->
{ok,Events} = run_test(slave,slave,[],Config),
check_calls(Events,2),
ok.
%% Let test node start a slave node which in turn starts another slave
%% node - check that cover is collected from all three nodes
slave_start_slave(Config) ->
{ok,Events} = run_test(slave_start_slave,slave_start_slave,[],Config),
check_calls(Events,3),
ok.
%% Start a slave node before test starts - the node is listed in cover
%% spec file.
%% Check that cover is collected from test node and slave node.
cover_node_option(Config) ->
{ok, HostStr}=inet:gethostname(),
Host = list_to_atom(HostStr),
DataDir = ?config(data_dir,Config),
{ok,Node} = ct_slave:start(Host,existing_node,
[{erl_flags,"-pa " ++ DataDir}]),
false = check_cover(Node),
CoverSpec = default_cover_file_content() ++ [{nodes,[Node]}],
CoverFile = create_cover_file(cover_node_option,CoverSpec,Config),
{ok,Events} = run_test(cover_node_option,cover_node_option,
[{cover,CoverFile}],Config),
check_calls(Events,2),
{ok,Node} = ct_slave:stop(existing_node),
ok.
%% Test ct_cover:add_nodes/1 and ct_cover:remove_nodes/1
%% Check that cover is collected from added node
ct_cover_add_remove_nodes(Config) ->
{ok, HostStr}=inet:gethostname(),
Host = list_to_atom(HostStr),
DataDir = ?config(data_dir,Config),
{ok,Node} = ct_slave:start(Host,existing_node,
[{erl_flags,"-pa " ++ DataDir}]),
false = check_cover(Node),
{ok,Events} = run_test(ct_cover_add_remove_nodes,ct_cover_add_remove_nodes,
[],Config),
check_calls(Events,2),
{ok,Node} = ct_slave:stop(existing_node),
ok.
%% Test that the test suite itself can be cover compiled and that
%% data_dir is set correctly (OTP-9956)
otp_9956(Config) ->
CoverFile = create_cover_file(otp_9956,[{incl_mods,[?suite]}],Config),
{ok,Events} = run_test(otp_9956,otp_9956,[{cover,CoverFile}],Config),
check_calls(Events,{?suite,otp_9956,1},1),
ok.
%%%-----------------------------------------------------------------
%%% HELP FUNCTIONS
%%%-----------------------------------------------------------------
run_test(Label,Config) ->
run_test(Label,[],Config).
run_test(Label,ExtraOpts,Config) ->
run_test(Label,default,ExtraOpts,Config).
run_test(Label,Testcase,ExtraOpts,Config) ->
DataDir = ?config(data_dir, Config),
Suite = filename:join(DataDir, ?suite),
CoverFile =
case proplists:get_value(cover,ExtraOpts) of
undefined ->
create_default_cover_file(Label,Config);
CF ->
CF
end,
RestOpts = lists:keydelete(cover,1,ExtraOpts),
{Opts,ERPid} = setup([{suite,Suite},{testcase,Testcase},
{cover,CoverFile},{label,Label}] ++ RestOpts, Config),
execute(Label, Testcase, Opts, ERPid, Config).
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}.
execute(Name, Testcase, Opts, ERPid, Config) ->
ok = ct_test_support:run(Opts, Config),
Events = ct_test_support:get_events(ERPid, Config),
ct_test_support:log_events(Name,
reformat(Events, ?eh),
?config(priv_dir, Config),
Opts),
TestEvents = events_to_check(Testcase),
R = ct_test_support:verify_events(TestEvents, Events, Config),
{R,Events}.
reformat(Events, EH) ->
ct_test_support:reformat(Events, EH).
events_to_check(Testcase) ->
OneTest =
[{?eh,start_logging,{'DEF','RUNDIR'}}] ++
[{?eh,tc_done,{?suite,Testcase,ok}}] ++
[{?eh,stop_logging,[]}],
%% 2 tests (ct:run_test + script_start) is default
OneTest ++ OneTest.
check_cover(Config) when is_list(Config) ->
CTNode = proplists:get_value(ct_node, Config),
check_cover(CTNode);
check_cover(Node) when is_atom(Node) ->
case rpc:call(Node,test_server,is_cover,[]) of
true ->
{true,
rpc:call(Node,cover,which_nodes,[]),
rpc:call(Node,cover,modules,[])};
false ->
false
end.
%% Check that each coverlog includes N calls to ?mod:foo/0
check_calls(Events,N) ->
check_calls(Events,{?mod,foo,0},N).
check_calls(Events,MFA,N) ->
CoverLogs =
[filename:join(filename:dirname(TCLog),"all.coverdata") ||
{ct_test_support_eh,
{event,tc_logfile,ct@falco,
{{?suite,init_per_suite},TCLog}}} <- Events],
do_check_logs(CoverLogs,MFA,N).
do_check_logs([CoverLog|CoverLogs],{Mod,_,_} = MFA,N) ->
{ok,_} = cover:start(),
ok = cover:import(CoverLog),
{ok,Calls} = cover:analyse(Mod,calls,function),
ok = cover:stop(),
{MFA,N} = lists:keyfind(MFA,1,Calls),
do_check_logs(CoverLogs,MFA,N);
do_check_logs([],_,_) ->
ok.
fullname(Name) ->
{ok,Host} = inet:gethostname(),
list_to_atom(atom_to_list(Name) ++ "@" ++ Host).
default_cover_file_content() ->
[{incl_mods,[?mod]}].
create_default_cover_file(Filename,Config) ->
create_cover_file(Filename,default_cover_file_content(),Config).
create_cover_file(Filename,Terms,Config) ->
PrivDir = ?config(priv_dir,Config),
File = filename:join(PrivDir,Filename) ++ ".cover",
{ok,Fd} = file:open(File,[write]),
lists:foreach(fun(Term) ->
file:write(Fd,io_lib:format("~p.~n",[Term]))
end,Terms),
ok = file:close(Fd),
File.
