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|
-module(cth_retry).
%% Callbacks
-export([id/1]).
-export([init/2]).
-export([pre_init_per_suite/3]).
-export([post_init_per_suite/4]).
-export([pre_end_per_suite/3]).
-export([post_end_per_suite/4]).
-export([pre_init_per_group/3]).
-export([post_init_per_group/4]).
-export([pre_end_per_group/3]).
-export([post_end_per_group/4]).
-export([pre_init_per_testcase/3]).
-export([post_end_per_testcase/4]).
-export([on_tc_fail/3]).
-export([on_tc_skip/3, on_tc_skip/4]).
-export([terminate/1]).
-record(state, {id, suite, groups, acc=[]}).
%% @doc Return a unique id for this CTH.
id(_Opts) ->
{?MODULE, make_ref()}.
%% @doc Always called before any other callback function. Use this to initiate
%% any common state.
init(Id, _Opts) ->
{ok, #state{id=Id}}.
%% @doc Called before init_per_suite is called.
pre_init_per_suite(Suite,Config,State) ->
{Config, State#state{suite=Suite, groups=[]}}.
%% @doc Called after init_per_suite.
post_init_per_suite(_Suite,_Config,Return,State) ->
{Return, State}.
%% @doc Called before end_per_suite.
pre_end_per_suite(_Suite,Config,State) ->
{Config, State}.
%% @doc Called after end_per_suite.
post_end_per_suite(_Suite,_Config,Return,State) ->
{Return, State#state{suite=undefined, groups=[]}}.
%% @doc Called before each init_per_group.
pre_init_per_group(_Group,Config,State) ->
{Config, State}.
%% @doc Called after each init_per_group.
post_init_per_group(Group,_Config,Return, State=#state{groups=Groups}) ->
{Return, State#state{groups=[Group|Groups]}}.
%% @doc Called after each end_per_group.
pre_end_per_group(_Group,Config,State) ->
{Config, State}.
%% @doc Called after each end_per_group.
post_end_per_group(_Group,_Config,Return, State=#state{groups=Groups}) ->
{Return, State#state{groups=tl(Groups)}}.
%% @doc Called before each test case.
pre_init_per_testcase(_TC,Config,State) ->
{Config, State}.
%% @doc Called after each test case.
post_end_per_testcase(_TC,_Config,ok,State) ->
{ok, State};
post_end_per_testcase(TC,_Config,Error,State=#state{suite=Suite, groups=Groups, acc=Acc}) ->
Test = case TC of
{_Group, Case} -> Case;
TC -> TC
end,
{Error, State#state{acc=[{Suite, Groups, Test}|Acc]}}.
%% @doc Called after post_init_per_suite, post_end_per_suite, post_init_per_group,
%% post_end_per_group and post_end_per_testcase if the suite, group or test case failed.
on_tc_fail(_TC, _Reason, State) ->
State.
%% @doc Called when a test case is skipped by either user action
%% or due to an init function failing. (>= 19.3)
on_tc_skip(Suite, TC, {tc_auto_skip, _}, State=#state{suite=Suite, groups=Groups, acc=Acc}) ->
NewAcc = case TC of
init_per_testcase -> Acc;
end_per_testcase -> Acc;
{init_per_group,_} -> Acc;
{end_per_group, _} -> Acc;
init_per_suite -> Acc;
end_per_suite -> Acc;
{_Group, Case} -> [{Suite, Groups, Case}|Acc];
TC -> [{Suite, Groups, TC}|Acc]
end,
State#state{suite=Suite, acc=NewAcc};
on_tc_skip(Suite, _TC, _Reason, State) ->
State#state{suite=Suite}.
%% @doc Called when a test case is skipped by either user action
%% or due to an init function failing. (Pre-19.3)
on_tc_skip(TC, {tc_auto_skip, _}, State=#state{suite=Suite, groups=Groups, acc=Acc}) ->
NewAcc = case TC of
init_per_testcase -> Acc;
end_per_testcase -> Acc;
{init_per_group,_} -> Acc;
{end_per_group, _} -> Acc;
init_per_suite -> Acc;
end_per_suite -> Acc;
{_Group, Case} -> [{Suite, Groups, Case}|Acc];
TC -> [{Suite, Groups, TC}|Acc]
end,
State#state{acc=NewAcc};
on_tc_skip(_TC, _Reason, State) ->
State.
%% @doc Called when the scope of the CTH is done
terminate(#state{acc=[]}) ->
ok;
terminate(#state{acc=Acc}) ->
Spec = to_spec(Acc),
{ok, Cwd} = file:get_cwd(),
Path = filename:join(lists:droplast(filename:split(Cwd))++["retry.spec"]),
io:format(user,
"EXPERIMENTAL: Writing retry specification at ~s~n"
" call rebar3 ct with '--retry' to re-run failing cases.~n",
[Path]),
file:write_file(Path, Spec),
ok.
%%% Helpers
to_spec(List) ->
[to_spec_entry(X) || X <- merge(List)].
merge([]) -> [];
merge([{Suite, Groups, Case}|T]) when is_atom(Case) ->
merge([{Suite, Groups, [Case]}|T]);
merge([{Suite, Groups, Cases}, {Suite, Groups, Case} | T]) ->
merge([{Suite, Groups, [Case|Cases]}|T]);
merge([{Suite, Groups, Cases} | T]) ->
[{Suite, Groups, Cases} | merge(T)].
to_spec_entry({Suite, [], Cases}) ->
Dir = filename:dirname(proplists:get_value(source, Suite:module_info(compile))),
io_lib:format("~p.~n", [{cases, Dir, Suite, Cases}]);
to_spec_entry({Suite, Groups, Cases}) ->
Dir = filename:dirname(proplists:get_value(source, Suite:module_info(compile))),
ExpandedGroups = expand_groups(lists:reverse(Groups)),
io_lib:format("~p.~n", [{groups, Dir, Suite, ExpandedGroups, {cases,Cases}}]).
expand_groups([Group]) ->
{Group, []};
expand_groups([H|T]) ->
{H,[],[expand_groups(T)]}.
|
