%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*- %% ex: ts=4 sw=4 et -module(rebar_prv_eunit). -behaviour(provider). -export([init/1, do/1, format_error/1]). -include("rebar.hrl"). -define(PROVIDER, eunit). -define(DEPS, [compile]). -define(EUNIT_DIR, ".eunit"). %% =================================================================== %% Public API %% =================================================================== -spec init(rebar_state:t()) -> {ok, rebar_state:t()}. init(State) -> State1 = rebar_state:add_provider(State, providers:create([{name, ?PROVIDER}, {module, ?MODULE}, {bare, false}, {deps, ?DEPS}, {example, "rebar eunit"}, {short_desc, "Run eunit tests on project apps."}, {desc, ""}, {opts, []}])), {ok, State1}. -spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}. do(State) -> ok = ensure_dirs(), %% Save code path CodePath = setup_code_path(), CompileOnly = rebar_state:get(State, compile_only, false), {ok, SrcErls} = rebar_erlc_compiler:test_compile(State, "eunit", ?EUNIT_DIR), case CompileOnly of "true" -> true = rebar_utils:cleanup_code_path(CodePath), ?CONSOLE("Compiled modules for eunit~n", []); false -> run_eunit(State, CodePath, SrcErls) end, {ok, State}. -spec format_error(any()) -> iolist(). format_error(Reason) -> io_lib:format("~p", [Reason]). run_eunit(Config, CodePath, SrcErls) -> %% Build a list of all the .beams in ?EUNIT_DIR -- use this for %% cover and eunit testing. Normally you can just tell cover %% and/or eunit to scan the directory for you, but eunit does a %% code:purge in conjunction with that scan and causes any cover %% compilation info to be lost. AllBeamFiles = rebar_utils:beams(?EUNIT_DIR), {BeamFiles, TestBeamFiles} = lists:partition(fun(N) -> string:str(N, "_tests.beam") =:= 0 end, AllBeamFiles), OtherBeamFiles = TestBeamFiles -- [filename:rootname(N) ++ "_tests.beam" || N <- AllBeamFiles], ModuleBeamFiles = randomize_suites(Config, BeamFiles ++ OtherBeamFiles), %% Get matching tests and modules AllModules = [rebar_utils:beam_to_mod(?EUNIT_DIR, N) || N <- AllBeamFiles], {Tests, FilteredModules} = get_tests_and_modules(Config, ModuleBeamFiles, AllModules), SrcModules = [rebar_utils:erl_to_mod(M) || M <- SrcErls], {ok, CoverLog} = rebar_cover_utils:init(Config, ModuleBeamFiles, eunit_dir()), StatusBefore = status_before_eunit(), EunitResult = perform_eunit(Config, Tests), rebar_cover_utils:perform_cover(Config, FilteredModules, SrcModules, eunit_dir()), rebar_cover_utils:close(CoverLog), case proplists:get_value(reset_after_eunit, get_eunit_opts(Config), true) of true -> reset_after_eunit(StatusBefore); false -> ok end, %% Stop cover to clean the cover_server state. This is important if we want %% eunit+cover to not slow down when analyzing many Erlang modules. ok = rebar_cover_utils:exit(), case EunitResult of ok -> ok; _ -> ?ABORT("One or more eunit tests failed.", []) end, %% Restore code path true = rebar_utils:cleanup_code_path(CodePath), ok. ensure_dirs() -> %% Make sure ?EUNIT_DIR/ and ebin/ directory exists (append dummy module) ok = filelib:ensure_dir(filename:join(eunit_dir(), "dummy")), ok = filelib:ensure_dir(filename:join(rebar_dir:ebin_dir(), "dummy")). eunit_dir() -> filename:join(rebar_dir:get_cwd(), ?EUNIT_DIR). setup_code_path() -> %% Setup code path prior to compilation so that parse_transforms %% and the like work properly. Also, be sure to add ebin_dir() %% to the END of the code path so that we don't have to jump %% through hoops to access the .app file CodePath = code:get_path(), true = code:add_patha(eunit_dir()), true = code:add_pathz(rebar_dir:ebin_dir()), CodePath. %% %% == get matching tests == %% get_tests_and_modules(Config, ModuleBeamFiles, AllModules) -> SelectedSuites = get_selected_suites(Config, AllModules), {Tests, QualifiedTests} = get_qualified_and_unqualified_tests(Config), Modules = get_test_modules(SelectedSuites, Tests, QualifiedTests, ModuleBeamFiles), FilteredModules = get_matching_modules(AllModules, Modules, QualifiedTests), MatchedTests = get_matching_tests(Modules, Tests, QualifiedTests), {MatchedTests, FilteredModules}. %% %% == get suites specified via 'suites' option == %% get_selected_suites(Config, Modules) -> RawSuites = get_suites(Config), Suites = [list_to_atom(Suite) || Suite <- string:tokens(RawSuites, ",")], [M || M <- Suites, lists:member(M, Modules)]. get_suites(Config) -> case rebar_state:get(Config, suites, "") of "" -> rebar_state:get(Config, suite, ""); Suites -> Suites end. get_qualified_and_unqualified_tests(Config) -> RawFunctions = rebar_state:get(Config, tests, ""), FunctionNames = [FunctionName || FunctionName <- string:tokens(RawFunctions, ",")], get_qualified_and_unqualified_tests1(FunctionNames, [], []). get_qualified_and_unqualified_tests1([], Functions, QualifiedFunctions) -> {Functions, QualifiedFunctions}; get_qualified_and_unqualified_tests1([TestName|TestNames], Functions, QualifiedFunctions) -> case string:tokens(TestName, ":") of [TestName] -> Function = list_to_atom(TestName), get_qualified_and_unqualified_tests1( TestNames, [Function|Functions], QualifiedFunctions); [ModuleName, FunctionName] -> M = list_to_atom(ModuleName), F = list_to_atom(FunctionName), get_qualified_and_unqualified_tests1(TestNames, Functions, [{M, F}|QualifiedFunctions]); _ -> ?ABORT("Unsupported test function specification: ~s", [TestName]) end. %% Provide modules which are to be searched for tests. %% Several scenarios are possible: %% %% == randomize suites == %% randomize_suites(Config, Modules) -> case rebar_state:get(Config, random_suite_order, undefined) of undefined -> Modules; "true" -> Seed = crypto:rand_uniform(1, 65535), randomize_suites1(Modules, Seed); String -> try list_to_integer(String) of Seed -> randomize_suites1(Modules, Seed) catch error:badarg -> ?ERROR("Bad random seed provided: ~p", [String]), ?FAIL end end. randomize_suites1(Modules, Seed) -> _ = random:seed(35, Seed, 1337), ?CONSOLE("Randomizing suite order with seed ~b~n", [Seed]), [X||{_,X} <- lists:sort([{random:uniform(), M} || M <- Modules])]. %% %% == get matching tests == %% 1) Specific tests have been provided and/or %% no unqualified tests have been specified and %% there were some qualified tests, then we can search for %% functions in specified suites (or in empty set of suites). %% %% 2) Neither specific suites nor qualified test names have been %% provided use ModuleBeamFiles which filters out "*_tests" %% modules so EUnit won't doubly run them and cover only %% calculates coverage on production code. However, %% keep "*_tests" modules that are not automatically %% included by EUnit. %% %% From 'Primitives' in the EUnit User's Guide %% http://www.erlang.org/doc/apps/eunit/chapter.html %% "In addition, EUnit will also look for another %% module whose name is ModuleName plus the suffix %% _tests, and if it exists, all the tests from that %% module will also be added. (If ModuleName already %% contains the suffix _tests, this is not done.) E.g., %% the specification {module, mymodule} will run all %% tests in the modules mymodule and mymodule_tests. %% Typically, the _tests module should only contain %% test cases that use the public interface of the main %% module (and no other code)." get_test_modules(SelectedSuites, Tests, QualifiedTests, ModuleBeamFiles) -> SuitesProvided = SelectedSuites =/= [], OnlyQualifiedTestsProvided = QualifiedTests =/= [] andalso Tests =:= [], if SuitesProvided orelse OnlyQualifiedTestsProvided -> SelectedSuites; true -> [rebar_utils:beam_to_mod(?EUNIT_DIR, N) || N <- ModuleBeamFiles] end. get_matching_modules(AllModules, Modules, QualifiedTests) -> ModuleFilterMapper = fun({M, _}) -> case lists:member(M, AllModules) of true -> {true, M}; _-> false end end, ModulesFromQualifiedTests = lists:zf(ModuleFilterMapper, QualifiedTests), lists:usort(Modules ++ ModulesFromQualifiedTests). get_matching_tests(Modules, [], []) -> Modules; get_matching_tests(Modules, [], QualifiedTests) -> FilteredQualifiedTests = filter_qualified_tests(Modules, QualifiedTests), lists:merge(Modules, make_test_primitives(FilteredQualifiedTests)); get_matching_tests(Modules, Tests, QualifiedTests) -> AllTests = lists:merge(QualifiedTests, get_matching_tests1(Modules, Tests, [])), make_test_primitives(AllTests). filter_qualified_tests(Modules, QualifiedTests) -> TestsFilter = fun({Module, _Function}) -> lists:all(fun(M) -> M =/= Module end, Modules) end, lists:filter(TestsFilter, QualifiedTests). get_matching_tests1([], _Functions, TestFunctions) -> TestFunctions; get_matching_tests1([Module|TModules], Functions, TestFunctions) -> %% Get module exports ModuleStr = atom_to_list(Module), ModuleExports = get_beam_test_exports(ModuleStr), %% Get module _tests exports TestModuleStr = string:concat(ModuleStr, "_tests"), TestModuleExports = get_beam_test_exports(TestModuleStr), %% Build tests {M, F} list Tests = get_matching_tests2(Functions, {Module, ModuleExports}, {list_to_atom(TestModuleStr), TestModuleExports}), get_matching_tests1(TModules, Functions, lists:merge([TestFunctions, Tests])). get_matching_tests2(Functions, {Mod, ModExports}, {TestMod, TestModExports}) -> %% Look for matching functions into ModExports ModExportsStr = [atom_to_list(E1) || E1 <- ModExports], TestModExportsStr = [atom_to_list(E2) || E2 <- TestModExports], get_matching_exports(Functions, {Mod, ModExportsStr}, {TestMod, TestModExportsStr}, []). get_matching_exports([], _, _, Matched) -> Matched; get_matching_exports([Function|TFunctions], {Mod, ModExportsStr}, {TestMod, TestModExportsStr}, Matched) -> FunctionStr = atom_to_list(Function), %% Get matching Function in module, otherwise look in _tests module NewMatch = case get_matching_export(FunctionStr, ModExportsStr) of [] -> {TestMod, get_matching_export(FunctionStr, TestModExportsStr)}; MatchingExport -> {Mod, MatchingExport} end, case NewMatch of {_, []} -> get_matching_exports(TFunctions, {Mod, ModExportsStr}, {TestMod, TestModExportsStr}, Matched); _ -> get_matching_exports(TFunctions, {Mod, ModExportsStr}, {TestMod, TestModExportsStr}, [NewMatch|Matched]) end. get_matching_export(_FunctionStr, []) -> []; get_matching_export(FunctionStr, [ExportStr|TExportsStr]) -> case string:str(ExportStr, FunctionStr) of 1 -> list_to_atom(ExportStr); _ -> get_matching_export(FunctionStr, TExportsStr) end. get_beam_test_exports(ModuleStr) -> FilePath = filename:join(eunit_dir(), string:concat(ModuleStr, ".beam")), case filelib:is_regular(FilePath) of true -> {beam_file, _, Exports0, _, _, _} = beam_disasm:file(FilePath), Exports1 = [FunName || {FunName, FunArity, _} <- Exports0, FunArity =:= 0], F = fun(FName) -> FNameStr = atom_to_list(FName), re:run(FNameStr, "_test(_)?") =/= nomatch end, lists:filter(F, Exports1); _ -> [] end. make_test_primitives(RawTests) -> %% Use {test,M,F} and {generator,M,F} if at least R15B02. Otherwise, %% use eunit_test:function_wrapper/2 fallback. %% eunit_test:function_wrapper/2 was renamed to eunit_test:mf_wrapper/2 %% in R15B02; use that as >= R15B02 check. %% TODO: remove fallback and use only {test,M,F} and {generator,M,F} %% primitives once at least R15B02 is required. {module, eunit_test} = code:ensure_loaded(eunit_test), MakePrimitive = case erlang:function_exported(eunit_test, mf_wrapper, 2) of true -> fun eunit_primitive/3; false -> fun pre15b02_eunit_primitive/3 end, ?CONSOLE(" Running test function(s):~n", []), F = fun({M, F2}, Acc) -> ?CONSOLE(" ~p:~p/0~n", [M, F2]), FNameStr = atom_to_list(F2), NewFunction = case re:run(FNameStr, "_test_") of nomatch -> %% Normal test MakePrimitive(test, M, F2); _ -> %% Generator MakePrimitive(generator, M, F2) end, [NewFunction|Acc] end, lists:foldl(F, [], RawTests). eunit_primitive(Type, M, F) -> {Type, M, F}. pre15b02_eunit_primitive(test, M, F) -> eunit_test:function_wrapper(M, F); pre15b02_eunit_primitive(generator, M, F) -> {generator, eunit_test:function_wrapper(M, F)}. %% %% == run tests == %% perform_eunit(Config, Tests) -> EunitOpts = get_eunit_opts(Config), %% Move down into ?EUNIT_DIR while we run tests so any generated files %% are created there (versus in the source dir) Cwd = rebar_dir:get_cwd(), ok = file:set_cwd(?EUNIT_DIR), EunitResult = (catch eunit:test(Tests, EunitOpts)), %% Return to original working dir ok = file:set_cwd(Cwd), EunitResult. get_eunit_opts(Config) -> %% Enable verbose in eunit if so requested.. BaseOpts = case rebar_log:is_verbose(Config) of true -> [verbose]; false -> [] end, BaseOpts ++ rebar_state:get(Config, eunit_opts, []). %% %% == reset_after_eunit == %% status_before_eunit() -> Apps = get_app_names(), AppEnvs = [{App, application:get_all_env(App)} || App <- Apps], {erlang:processes(), erlang:is_alive(), AppEnvs, ets:tab2list(ac_tab)}. get_app_names() -> [AppName || {AppName, _, _} <- application:loaded_applications()]. reset_after_eunit({OldProcesses, WasAlive, OldAppEnvs, _OldACs}) -> IsAlive = erlang:is_alive(), if not WasAlive andalso IsAlive -> ?DEBUG("Stopping net kernel....\n", []), erl_epmd:stop(), _ = net_kernel:stop(), pause_until_net_kernel_stopped(); true -> ok end, OldApps = [App || {App, _} <- OldAppEnvs], Apps = get_app_names(), _ = [begin _ = case lists:member(App, OldApps) of true -> ok; false -> application:stop(App) end, ok = application:unset_env(App, K) end || App <- Apps, App /= rebar, {K, _V} <- application:get_all_env(App), K =/= included_applications], reconstruct_app_env_vars(Apps), Processes = erlang:processes(), _ = kill_extras(Processes -- OldProcesses), ok. kill_extras(Pids) -> %% Killing any of the procs below will either: %% 1. Interfere with stuff that we don't want interfered with, or %% 2. May/will force the 'kernel' app to shutdown, which *will* %% interfere with rebar's ability To Do Useful Stuff(tm). %% This list may require changes as OTP versions and/or %% rebar use cases change. KeepProcs = [cover_server, eunit_server, eqc, eqc_license, eqc_locked, %% inet_gethost_native is started on demand, when %% doing name lookups. It is under kernel_sup, under %% a supervisor_bridge. inet_gethost_native], Killed = [begin Info = case erlang:process_info(Pid) of undefined -> []; Else -> Else end, Keep1 = case proplists:get_value(registered_name, Info) of undefined -> false; Name -> lists:member(Name, KeepProcs) end, Keep2 = case proplists:get_value(dictionary, Info) of undefined -> false; Ds -> case proplists:get_value('$ancestors', Ds) of undefined -> false; As -> lists:member(kernel_sup, As) end end, if Keep1 orelse Keep2 -> ok; true -> ?DEBUG("Kill ~p ~p\n", [Pid, Info]), exit(Pid, kill), Pid end end || Pid <- Pids], case lists:usort(Killed) -- [ok] of [] -> ?DEBUG("No processes to kill\n", []), []; Else -> lists:foreach(fun(Pid) -> wait_until_dead(Pid) end, Else), Else end. reconstruct_app_env_vars([App|Apps]) -> CmdLine0 = proplists:get_value(App, init:get_arguments(), []), CmdVars = [{list_to_atom(K), list_to_atom(V)} || {K, V} <- CmdLine0], AppFile = (catch filename:join([code:lib_dir(App), "ebin", atom_to_list(App) ++ ".app"])), AppVars = case file:consult(AppFile) of {ok, [{application, App, Ps}]} -> proplists:get_value(env, Ps, []); _ -> [] end, %% App vars specified in config files override those in the .app file. %% Config files later in the args list override earlier ones. AppVars1 = case init:get_argument(config) of {ok, ConfigFiles} -> {App, MergedAppVars} = lists:foldl(fun merge_app_vars/2, {App, AppVars}, ConfigFiles), MergedAppVars; error -> AppVars end, AllVars = CmdVars ++ AppVars1, ?DEBUG("Reconstruct ~p ~p\n", [App, AllVars]), lists:foreach(fun({K, V}) -> application:set_env(App, K, V) end, AllVars), reconstruct_app_env_vars(Apps); reconstruct_app_env_vars([]) -> ok. merge_app_vars(ConfigFile, {App, AppVars}) -> File = ensure_config_extension(ConfigFile), FileAppVars = app_vars_from_config_file(File, App), Dict1 = dict:from_list(AppVars), Dict2 = dict:from_list(FileAppVars), Dict3 = dict:merge(fun(_Key, _Value1, Value2) -> Value2 end, Dict1, Dict2), {App, dict:to_list(Dict3)}. ensure_config_extension(File) -> %% config files must end with .config on disk but when specifying them %% via the -config option the extension is optional BaseFileName = filename:basename(File, ".config"), DirName = filename:dirname(File), filename:join(DirName, BaseFileName ++ ".config"). app_vars_from_config_file(File, App) -> case file:consult(File) of {ok, [Env]} -> proplists:get_value(App, Env, []); _ -> [] end. wait_until_dead(Pid) when is_pid(Pid) -> Ref = erlang:monitor(process, Pid), receive {'DOWN', Ref, process, _Obj, Info} -> Info after 10*1000 -> exit({timeout_waiting_for, Pid}) end; wait_until_dead(_) -> ok. pause_until_net_kernel_stopped() -> pause_until_net_kernel_stopped(10). pause_until_net_kernel_stopped(0) -> exit(net_kernel_stop_failed); pause_until_net_kernel_stopped(N) -> case node() of 'nonode@nohost' -> ?DEBUG("Stopped net kernel.\n", []), ok; _ -> timer:sleep(100), pause_until_net_kernel_stopped(N - 1) end.