%% Licensed under the Apache License, Version 2.0 (the "License"); you may
%% not use this file except in compliance with the License. You may obtain
%% a copy of the License at <http://www.apache.org/licenses/LICENSE-2.0>
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% Alternatively, you may use this file under the terms of the GNU Lesser
%% General Public License (the "LGPL") as published by the Free Software
%% Foundation; either version 2.1, or (at your option) any later version.
%% If you wish to allow use of your version of this file only under the
%% terms of the LGPL, you should delete the provisions above and replace
%% them with the notice and other provisions required by the LGPL; see
%% <http://www.gnu.org/licenses/>. If you do not delete the provisions
%% above, a recipient may use your version of this file under the terms of
%% either the Apache License or the LGPL.
%%
%% @copyright 2004-2009 Mickaël Rémond, Richard Carlsson
%% @author Mickaël Rémond <[email protected]>
%% [http://www.process-one.net/]
%% @author Richard Carlsson <[email protected]>
%% @version {@version}, {@date} {@time}
%% @doc This module is the main EUnit user interface.
-module(eunit).
-include("eunit.hrl").
-include("eunit_internal.hrl").
%% Official exports
-export([start/0, stop/0, test/1, test/2]).
%% Experimental; may be removed or relocated
-export([start/1, stop/1, test/3, submit/1, submit/2, submit/3, watch/1,
watch/2, watch/3, watch_path/1, watch_path/2, watch_path/3,
watch_regexp/1, watch_regexp/2, watch_regexp/3, watch_app/1,
watch_app/2, watch_app/3]).
%% EUnit entry points
%% TODO: Command line interface similar to that of edoc?
%% @doc Starts the EUnit server. Normally, you don't need to call this
%% function; it is started automatically.
start() ->
start(?SERVER).
%% @private
%% @doc See {@link start/0}.
start(Server) ->
eunit_server:start(Server).
%% @doc Stops the EUnit server. Normally, you don't need to call this
%% function.
stop() ->
stop(?SERVER).
%% @private
%% @doc See {@link stop/0}.
stop(Server) ->
eunit_server:stop(Server).
%% @private
watch(Target) ->
watch(Target, []).
%% @private
watch(Target, Options) ->
watch(?SERVER, Target, Options).
%% @private
watch(Server, Target, Options) ->
eunit_server:watch(Server, Target, Options).
%% @private
watch_path(Target) ->
watch_path(Target, []).
%% @private
watch_path(Target, Options) ->
watch_path(?SERVER, Target, Options).
%% @private
watch_path(Server, Target, Options) ->
eunit_server:watch_path(Server, Target, Options).
%% @private
watch_regexp(Target) ->
watch_regexp(Target, []).
%% @private
watch_regexp(Target, Options) ->
watch_regexp(?SERVER, Target, Options).
%% @private
watch_regexp(Server, Target, Options) ->
eunit_server:watch_regexp(Server, Target, Options).
%% @private
watch_app(Name) ->
watch_app(Name, []).
%% @private
watch_app(Name, Options) ->
watch_app(?SERVER, Name, Options).
%% @private
watch_app(Server, Name, Options) ->
case code:lib_dir(Name) of
Path when is_list(Path) ->
watch_path(Server, filename:join(Path, "ebin"), Options);
_ ->
error
end.
%% @equiv test(Tests, [])
test(Tests) ->
test(Tests, []).
%% @spec test(Tests::term(), Options::[term()]) -> ok | {error, term()}
%% @doc Runs a set of tests. The format of `Tests' is described in the
%% section <a
%% href="overview-summary.html#EUnit_test_representation">EUnit test
%% representation</a> of the overview.
%%
%% Example: ```eunit:test(fred)''' runs all tests in the module `fred'
%% and also any tests in the module `fred_tests', if that module exists.
%%
%% Options:
%% <dl>
%% <dt>`verbose'</dt>
%% <dd>Displays more details about the running tests.</dd>
%% </dl>
%%
%% Options in the environment variable EUNIT are also included last in
%% the option list, i.e., have lower precedence than those in `Options'.
%% @see test/1
test(Tests, Options) ->
test(?SERVER, Tests, all_options(Options)).
%% @private
%% @doc See {@link test/2}.
test(Server, Tests, Options) ->
Listeners = listeners(Options),
Serial = eunit_serial:start(Listeners),
case eunit_server:start_test(Server, Serial, Tests, Options) of
{ok, Reference} -> test_run(Reference, Listeners);
{error, R} -> {error, R}
end.
test_run(Reference, Listeners) ->
receive
{start, Reference} ->
cast(Listeners, {start, Reference})
end,
receive
{done, Reference} ->
cast(Listeners, {stop, Reference, self()}),
wait_until_listeners_have_terminated(Listeners),
receive
{result, Reference, Result} ->
Result
end
end.
cast([P | Ps], Msg) ->
P ! Msg,
cast(Ps, Msg);
cast([], _Msg) ->
ok.
wait_until_listeners_have_terminated([P | Ps]) ->
MRef = erlang:monitor(process, P),
receive
{'DOWN', MRef, process, P, _} ->
wait_until_listeners_have_terminated(Ps)
end;
wait_until_listeners_have_terminated([]) ->
ok.
%% TODO: functions that run tests on a given node, not a given server
%% TODO: maybe some functions could check for a globally registered server?
%% TODO: some synchronous but completely quiet interface function
%% @private
submit(T) ->
submit(T, []).
%% @private
submit(T, Options) ->
submit(?SERVER, T, Options).
%% @private
submit(Server, T, Options) ->
Dummy = spawn(fun devnull/0),
eunit_server:start_test(Server, Dummy, T, Options).
listeners(Options) ->
%% note that eunit_tty must always run, because it sends the final
%% {result,...} message that the test_run() function is waiting for
Ls = [{eunit_tty, Options} | proplists:get_all_values(report, Options)],
Ps = start_listeners(Ls),
%% the event_log option is for debugging, to view the raw events
case proplists:get_value(event_log, Options) of
undefined ->
Ps;
X ->
LogFile = if is_list(X) -> X;
true -> "eunit-events.log"
end,
[spawn_link(fun () -> event_logger(LogFile) end) | Ps]
end.
start_listeners([P | Ps]) when is_pid(P) ; is_atom(P) ->
[P | start_listeners(Ps)];
start_listeners([{Mod, Opts} | Ps]) when is_atom(Mod) ->
[Mod:start(Opts) | start_listeners(Ps)];
start_listeners([]) ->
[].
%% TODO: make this report file errors
event_logger(LogFile) ->
case file:open(LogFile, [write]) of
{ok, FD} ->
receive
{start, Reference} ->
event_logger_loop(Reference, FD)
end;
Error ->
exit(Error)
end.
event_logger_loop(Reference, FD) ->
receive
{status, _Id, _Info}=Msg ->
io:fwrite(FD, "~tp.\n", [Msg]),
event_logger_loop(Reference, FD);
{stop, Reference, _ReplyTo} ->
%% no need to reply, just exit
file:close(FD),
exit(normal)
end.
%% TODO: make a proper logger for asynchronous execution with submit/3
devnull() ->
receive _ -> devnull() end.
%% including options from EUNIT environment variable
all_options(Opts) ->
try os:getenv("EUNIT") of
false -> Opts;
S ->
{ok, Ts, _} = erl_scan:string(S),
{ok, V} = erl_parse:parse_term(Ts ++ [{dot,1}]),
if is_list(V) -> Opts ++ V;
true -> Opts ++ [V]
end
catch
_:_ -> Opts
end.
