rebar3/test/rebar_test_utils.erl

543 lines
24 KiB
Erlang

-module(rebar_test_utils).
-include_lib("common_test/include/ct.hrl").
-include_lib("eunit/include/eunit.hrl").
-export([init_rebar_state/1, init_rebar_state/2, run_and_check/3, run_and_check/4,
check_results/3, check_results/4]).
-export([expand_deps/2, flat_deps/1, top_level_deps/1]).
-export([create_app/4, create_plugin/4, create_eunit_app/4, create_empty_app/4,
create_config/2, create_config/3, package_app/4]).
-export([create_random_name/1, create_random_vsn/0, write_src_file/2,
random_element/1]).
%%%%%%%%%%%%%%
%%% Public %%%
%%%%%%%%%%%%%%
%% @doc {@see init_rebar_state/2}
init_rebar_state(Config) -> init_rebar_state(Config, "apps_dir1_").
%% @doc Takes a common test config and a name (string) and sets up
%% a basic OTP app directory with a pre-configured rebar state to
%% run tests with.
init_rebar_state(Config, Name) ->
application:load(rebar),
DataDir = ?config(priv_dir, Config),
AppsDir = filename:join([DataDir, create_random_name(Name)]),
CheckoutsDir = filename:join([AppsDir, "_checkouts"]),
ok = ec_file:mkdir_p(AppsDir),
ok = ec_file:mkdir_p(CheckoutsDir),
Verbosity = rebar3:log_level(),
rebar_log:init(command_line, Verbosity),
GlobalDir = filename:join([DataDir, "cache"]),
Repos = proplists:get_value(repos, Config, []),
State = rebar_state:new([{base_dir, filename:join([AppsDir, "_build"])}
,{global_rebar_dir, GlobalDir}
,{hex, [{repos, [#{name => R} || R <- Repos]}]}
,{root_dir, AppsDir}]),
[{apps, AppsDir}, {checkouts, CheckoutsDir}, {state, State} | Config].
%% @doc Takes common test config, a rebar config ([] if empty), a command to
%% run ("install_deps", "compile", etc.), and a list of expected applications
%% and/or dependencies to be present, and verifies whether they are all in
%% place.
%%
%% The expectation list takes elements of the form:
%% - `{app, Name :: string()}': checks that the app is properly built.
%% - `{dep, Name :: string()}': checks that the dependency has been fetched.
%% Ignores the build status of the dependency.
%% - `{dep, Name :: string(), Vsn :: string()}': checks that the dependency
%% has been fetched, and that a given version has been chosen. Useful to
%% test for conflict resolution. Also ignores the build status of the
%% dependency.
%%
%% This function assumes `init_rebar_state/1-2' has run before, in order to
%% fetch the `apps' and `state' values from the CT config.
run_and_check(Config, RebarConfig, Command, Expect) ->
%% Assumes init_rebar_state has run first
AppDir = ?config(apps, Config),
State = ?config(state, Config),
try
Res = rebar3:run(rebar_state:new(State, RebarConfig, AppDir), Command),
case Expect of
{error, Reason} ->
?assertEqual({error, Reason}, Res);
{ok, Expected} ->
{ok, _} = Res,
check_results(AppDir, Expected, "*"),
Res;
{ok, Expected, ProfileRun} ->
{ok, _} = Res,
check_results(AppDir, Expected, ProfileRun),
Res;
return ->
Res
end
catch
rebar_abort when Expect =:= rebar_abort -> rebar_abort
end.
run_and_check(Config, Command, Expect) ->
%% Assumes init_rebar_state has run first
AppDir = ?config(apps, Config),
{ok, Cwd} = file:get_cwd(),
try
ok = file:set_cwd(AppDir),
Res = rebar3:run(Command),
case Expect of
{error, Reason} ->
?assertEqual({error, Reason}, Res);
{ok, Expected} ->
{ok, _} = Res,
check_results(AppDir, Expected, "*"),
Res;
{ok, Expected, ProfileRun} ->
{ok, _} = Res,
check_results(AppDir, Expected, ProfileRun),
Res;
return ->
Res
end
catch
rebar_abort when Expect =:= rebar_abort -> rebar_abort
after
ok = file:set_cwd(Cwd)
end.
%% @doc Creates a dummy application including:
%% - src/<file>.erl
%% - src/<file>.app.src
%% And returns a `rebar_app_info' object.
create_app(AppDir, Name, Vsn, Deps) ->
write_src_file(AppDir, Name ++ ".erl"),
write_src_file(AppDir, "not_a_real_src_" ++ Name ++ ".erl"),
write_app_src_file(AppDir, Name, Vsn, Deps),
rebar_app_info:new(Name, Vsn, AppDir, Deps).
%% @doc Creates a dummy plugin including:
%% - src/<file>.erl
%% - src/<file>.app.src
%% And returns a `rebar_app_info' object.
create_plugin(AppDir, Name, Vsn, Deps) ->
write_plugin_file(AppDir, Name ++ ".erl"),
write_src_file(AppDir, "not_a_real_src_" ++ Name ++ ".erl"),
write_app_src_file(AppDir, Name, Vsn, Deps),
rebar_app_info:new(Name, Vsn, AppDir, Deps).
%% @doc Creates a dummy application including:
%% - src/<file>.erl
%% - src/<file>.app.src
%% - test/<file>_tests.erl
%% And returns a `rebar_app_info' object.
create_eunit_app(AppDir, Name, Vsn, Deps) ->
write_eunitized_src_file(AppDir, Name),
write_eunit_suite_file(AppDir, Name),
write_app_src_file(AppDir, Name, Vsn, Deps),
rebar_app_info:new(Name, Vsn, AppDir, Deps).
%% @doc Creates a dummy application including:
%% - ebin/<file>.app
%% And returns a `rebar_app_info' object.
create_empty_app(AppDir, Name, Vsn, Deps) ->
write_app_file(AppDir, Name, Vsn, Deps),
rebar_app_info:new(Name, Vsn, AppDir, Deps).
%% @doc Creates a rebar.config file. The function accepts a list of terms,
%% each of which will be dumped as a consult file. For example, the list
%% `[a, b, c]' will return the consult file `a. b. c.'.
create_config(AppDir, Contents) ->
ConfFilename = filename:join([AppDir, "rebar.config"]),
create_config(AppDir, ConfFilename, Contents).
create_config(_AppDir, ConfFilename, Contents) ->
ok = filelib:ensure_dir(ConfFilename),
Config = lists:flatten([io_lib:fwrite("~p.~n", [Term]) || Term <- Contents]),
ok = ec_file:write(ConfFilename, Config),
ConfFilename.
%% @doc Util to create a random variation of a given name.
create_random_name(Name) ->
Name ++ erlang:integer_to_list(rand:uniform(1000000)).
%% @doc Util to create a random variation of a given version.
create_random_vsn() ->
lists:flatten([erlang:integer_to_list(rand:uniform(100)),
".", erlang:integer_to_list(rand:uniform(100)),
".", erlang:integer_to_list(rand:uniform(100))]).
expand_deps(_, []) -> [];
expand_deps(git_subdir, [{Name, Deps} | Rest]) ->
Dep = {Name, {git_subdir, "https://example.org/user/"++Name++".git", {branch, "master"}, filename:join("appsubdir", Name)}},
[{Dep, expand_deps(git_subdir, Deps)} | expand_deps(git_subdir, Rest)];
expand_deps(git_subdir, [{Name, Vsn, Deps} | Rest]) ->
Dep = {Name, Vsn, {git_subdir, "https://example.org/user/"++Name++".git", {tag, Vsn}, filename:join("appsubdir", Name)}},
[{Dep, expand_deps(git_subdir, Deps)} | expand_deps(git_subdir, Rest)];
expand_deps(git, [{Name, Deps} | Rest]) ->
Dep = {Name, ".*", {git, "https://example.org/user/"++Name++".git", "master"}},
[{Dep, expand_deps(git, Deps)} | expand_deps(git, Rest)];
expand_deps(git, [{Name, Vsn, Deps} | Rest]) ->
Dep = {Name, Vsn, {git, "https://example.org/user/"++Name++".git", {tag, Vsn}}},
[{Dep, expand_deps(git, Deps)} | expand_deps(git, Rest)];
expand_deps(pkg, [{Name, Deps} | Rest]) ->
Dep = {pkg, Name, "0.0.0", undefined, undefined},
[{Dep, expand_deps(pkg, Deps)} | expand_deps(pkg, Rest)];
expand_deps(pkg, [{Name, Vsn, Deps} | Rest]) ->
Dep = {pkg, Name, Vsn, undefined, undefined},
[{Dep, expand_deps(pkg, Deps)} | expand_deps(pkg, Rest)];
expand_deps(mixed, [{Name, Deps} | Rest]) ->
Dep = if hd(Name) >= $a, hd(Name) =< $z ->
{pkg, rebar_string:uppercase(Name), "0.0.0", undefined, undefined}
; hd(Name) >= $A, hd(Name) =< $Z ->
{Name, ".*", {git, "https://example.org/user/"++Name++".git", "master"}}
end,
[{Dep, expand_deps(mixed, Deps)} | expand_deps(mixed, Rest)];
expand_deps(mixed, [{Name, Vsn, Deps} | Rest]) ->
Dep = if hd(Name) >= $a, hd(Name) =< $z ->
{pkg, rebar_string:uppercase(Name), Vsn, undefined, undefined}
; hd(Name) >= $A, hd(Name) =< $Z ->
{Name, Vsn, {git, "https://example.org/user/"++Name++".git", {tag, Vsn}}}
end,
[{Dep, expand_deps(mixed, Deps)} | expand_deps(mixed, Rest)].
%% Source deps can depend on both source and package dependencies;
%% package deps can only depend on package deps.
%% For things to work we have to go down the dep tree and find all
%% lineages of pkg deps and return them, whereas the source deps
%% can be left as is.
flat_deps(Deps) -> flat_deps(Deps, [], []).
flat_deps([], Src, Pkg) -> {Src, Pkg};
flat_deps([{{pkg, Name, Vsn, undefined, undefined}, PkgDeps} | Rest], Src, Pkg) ->
Current = {{iolist_to_binary(Name), iolist_to_binary(Vsn)},
top_level_deps(PkgDeps)},
{[], FlatPkgDeps} = flat_deps(PkgDeps),
flat_deps(Rest,
Src,
Pkg ++ [Current | FlatPkgDeps]);
flat_deps([{{Name,_Vsn,Ref}, Deps} | Rest], Src, Pkg) ->
Current = {{Name,vsn_from_ref(Ref)}, top_level_deps(Deps)},
{FlatDeps, FlatPkgDeps} = flat_deps(Deps),
flat_deps(Rest,
Src ++ [Current | FlatDeps],
Pkg ++ FlatPkgDeps);
flat_deps([{{Name,Ref}, Deps} | Rest], Src, Pkg) ->
Current = {{Name,vsn_from_ref(Ref)}, top_level_deps(Deps)},
{FlatDeps, FlatPkgDeps} = flat_deps(Deps),
flat_deps(Rest,
Src ++ [Current | FlatDeps],
Pkg ++ FlatPkgDeps).
vsn_from_ref({git, _, {_, Vsn}}) -> Vsn;
vsn_from_ref({git, _, Vsn}) -> Vsn;
vsn_from_ref({git_subdir, _, {_, Vsn}, _}) -> Vsn;
vsn_from_ref({git_subdir, _, Vsn, _}) -> Vsn.
top_level_deps([]) -> [];
top_level_deps([{{pkg, Name, Vsn, undefined, undefined}, _} | Deps]) ->
[{list_to_atom(Name), Vsn} | top_level_deps(Deps)];
top_level_deps([{{Name, Vsn, Ref}, _} | Deps]) ->
[{list_to_atom(Name), Vsn, Ref} | top_level_deps(Deps)].
%%%%%%%%%%%%%%%
%%% Helpers %%%
%%%%%%%%%%%%%%%
check_results(AppDir, Expected, ProfileRun) ->
State = rebar_state:new(),
check_results(AppDir, Expected, ProfileRun, State).
check_results(AppDir, Expected, ProfileRun, State) ->
BuildDirs = filelib:wildcard(filename:join([AppDir, "_build", ProfileRun, "lib", "*"])),
BuildSubDirs = [D || D <- filelib:wildcard(filename:join([AppDir, "_build", ProfileRun, "lib", "*", "*", "*"])),
filelib:is_dir(D)],
PluginDirs = filelib:wildcard(filename:join([AppDir, "_build", ProfileRun, "plugins", "*"])),
GlobalPluginDirs = filelib:wildcard(filename:join([AppDir, "global", "plugins", "*"])),
CheckoutsDirs = filelib:wildcard(filename:join([AppDir, "_build", ProfileRun, "checkouts", "*"])),
LockFile = filename:join([AppDir, "rebar.lock"]),
Locks = lists:flatten(rebar_config:consult_lock_file(LockFile)),
InvalidApps = rebar_app_discover:find_apps(BuildDirs, invalid, State),
ValidApps = rebar_app_discover:find_apps(BuildDirs, valid, State),
InvalidDepsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- InvalidApps],
ValidDepsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- ValidApps],
Deps = rebar_app_discover:find_apps(BuildDirs, all, State),
SubDeps = rebar_app_discover:find_apps(BuildSubDirs, all, State),
DepsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- Deps],
SubDirDepsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- SubDeps],
Checkouts = rebar_app_discover:find_apps(CheckoutsDirs, all, State),
CheckoutsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- Checkouts],
Plugins = rebar_app_discover:find_apps(PluginDirs, all, State),
PluginsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- Plugins],
GlobalPlugins = rebar_app_discover:find_apps(GlobalPluginDirs, all, State),
GlobalPluginsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- GlobalPlugins],
lists:foreach(
fun({app, Name}) ->
ct:pal("App Name: ~p", [Name]),
case lists:keyfind(Name, 1, DepsNames) of
false ->
error({app_not_found, Name});
{Name, _App} ->
ok
end
; ({app, Name, invalid}) ->
ct:pal("Invalid Name: ~p", [Name]),
case lists:keyfind(Name, 1, InvalidDepsNames) of
false ->
error({app_not_found, Name});
{Name, _App} ->
ok
end
; ({app, Name, valid}) ->
ct:pal("Valid Name: ~p", [Name]),
case lists:keyfind(Name, 1, ValidDepsNames) of
false ->
error({app_not_found, Name});
{Name, _App} ->
ok
end
; ({dep_not_exist, Name}) ->
ct:pal("Dep Not Exist Name: ~p", [Name]),
case lists:keyfind(Name, 1, DepsNames) of
false ->
ok;
{Name, _App} ->
error({app_found, Name})
end
; ({app_not_exist, Name}) ->
ct:pal("App Not Exist Name: ~p", [Name]),
case lists:keyfind(Name, 1, DepsNames) of
false ->
ok;
{Name, _App} ->
error({app_found, Name})
end
; ({checkout, Name}) ->
ct:pal("Checkout Name: ~p", [Name]),
?assertNotEqual(false, lists:keyfind(Name, 1, CheckoutsNames))
; ({dep, Name}) ->
ct:pal("Dep Name: ~p", [Name]),
?assertNotEqual(false, lists:keyfind(Name, 1, DepsNames))
; ({dep, Name, Vsn}) ->
ct:pal("Dep Name: ~p, Vsn: ~p", [Name, Vsn]),
case lists:keyfind(Name, 1, DepsNames) of
false ->
error({dep_not_found, Name});
{Name, App} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(rebar_app_info:original_vsn(App)))
end
; ({subdir_dep, Name}) ->
ct:pal("Subdir Dep Name: ~p", [Name]),
?assertNotEqual(false, lists:keyfind(Name, 1, SubDirDepsNames))
; ({subdir_dep, Name, Vsn}) ->
ct:pal("Subdir Dep Name: ~p, Vsn: ~p", [Name, Vsn]),
case lists:keyfind(Name, 1, SubDirDepsNames) of
false ->
error({dep_not_found, Name});
{Name, App} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(rebar_app_info:original_vsn(App)))
end
; ({plugin, Name}) ->
ct:pal("Plugin Name: ~p", [Name]),
?assertNotEqual(false, lists:keyfind(Name, 1, PluginsNames))
; ({plugin, Name, Vsn}) ->
ct:pal("Plugin Name: ~p, Vsn: ~p", [Name, Vsn]),
case lists:keyfind(Name, 1, PluginsNames) of
false ->
error({plugin_not_found, Name});
{Name, App} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(rebar_app_info:original_vsn(App)))
end
; ({global_plugin, Name}) ->
ct:pal("Global Plugin Name: ~p", [Name]),
?assertNotEqual(false, lists:keyfind(Name, 1, GlobalPluginsNames))
; ({global_plugin, Name, Vsn}) ->
ct:pal("Global Plugin Name: ~p, Vsn: ~p", [Name, Vsn]),
case lists:keyfind(Name, 1, GlobalPluginsNames) of
false ->
error({global_plugin_not_found, Name});
{Name, App} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(rebar_app_info:original_vsn(App)))
end
; ({lock, Name}) ->
ct:pal("Lock Name: ~p", [Name]),
?assertNotEqual(false, lists:keyfind(iolist_to_binary(Name), 1, Locks))
; ({lock, Name, Vsn}) ->
ct:pal("Lock Name: ~p, Vsn: ~p", [Name, Vsn]),
case lists:keyfind(iolist_to_binary(Name), 1, Locks) of
false ->
error({lock_not_found, Name});
{_LockName, {pkg, _, LockVsn, _InnerHash, OuterHash}, _} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(LockVsn)),
?assertNotEqual(undefined, OuterHash);
{_LockName, {_, _, {ref, LockVsn}}, _} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(LockVsn))
end
; ({lock, pkg, Name, Vsn}) ->
ct:pal("Pkg Lock Name: ~p, Vsn: ~p", [Name, Vsn]),
case lists:keyfind(iolist_to_binary(Name), 1, Locks) of
false ->
error({lock_not_found, Name});
{_LockName, {pkg, _, LockVsn, _InnerHash, OuterHash}, _} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(LockVsn)),
?assertNotEqual(undefined, OuterHash);
{_LockName, {_, _, {ref, LockVsn}}, _} ->
error({source_lock, {Name, LockVsn}})
end
; ({lock, src, Name, Vsn}) ->
ct:pal("Src Lock Name: ~p, Vsn: ~p", [Name, Vsn]),
case lists:keyfind(iolist_to_binary(Name), 1, Locks) of
false ->
error({lock_not_found, Name});
{_LockName, {pkg, _, LockVsn, _}, _} ->
error({pkg_lock, {Name, LockVsn}});
{_LockName, {_, _, {ref, LockVsn}}, _} ->
?assertEqual(iolist_to_binary(Vsn),
iolist_to_binary(LockVsn))
end
; ({release, Name, Vsn, ExpectedDevMode}) ->
ct:pal("Release: ~p-~ts", [Name, Vsn]),
{ok, Cwd} = file:get_cwd(),
try
file:set_cwd(AppDir),
[ReleaseDir] = filelib:wildcard(filename:join([AppDir, "_build", "*", "rel"])),
LibDir = filename:join([ReleaseDir, Name, "lib"]),
{ok, RelLibs} = rebar_utils:list_dir(LibDir),
IsSymLinkFun =
fun(X) ->
ec_file:is_symlink(filename:join(LibDir, X))
end,
DevMode = lists:all(IsSymLinkFun, RelLibs),
?assertEqual(ExpectedDevMode, DevMode),
?assert(ec_file:exists(filename:join([ReleaseDir, Name, "releases", Vsn]))),
%% throws not_found if it doesn't exist
ok
catch
_ ->
ct:fail(release_not_found)
after
file:set_cwd(Cwd)
end
; ({tar, Name, Vsn}) ->
ct:pal("Tarball: ~ts-~ts", [Name, Vsn]),
Tarball = filename:join([AppDir, "_build", "rel", Name, Name++"-"++Vsn++".tar.gz"]),
?assertNotEqual([], filelib:is_file(Tarball))
; ({file, Filename}) ->
ct:pal("Filename: ~ts", [Filename]),
?assert(filelib:is_file(Filename))
; ({dir, Dirname}) ->
ct:pal("Directory: ~ts", [Dirname]),
?assert(filelib:is_dir(Dirname))
end, Expected).
write_plugin_file(Dir, Name) ->
Erl = filename:join([Dir, "src", Name]),
ok = filelib:ensure_dir(Erl),
ok = ec_file:write(Erl, plugin_src_file(Name)).
write_src_file(Dir, Name) ->
Erl = filename:join([Dir, "src", Name]),
ok = filelib:ensure_dir(Erl),
ok = ec_file:write(Erl, erl_src_file(Name)).
write_eunitized_src_file(Dir, Name) ->
Erl = filename:join([Dir, "src", "not_a_real_src_" ++ Name ++ ".erl"]),
ok = filelib:ensure_dir(Erl),
ok = ec_file:write(Erl, erl_eunitized_src_file("not_a_real_src_" ++ Name ++ ".erl")).
write_eunit_suite_file(Dir, Name) ->
Erl = filename:join([Dir, "test", "not_a_real_src_" ++ Name ++ "_tests.erl"]),
ok = filelib:ensure_dir(Erl),
ok = ec_file:write(Erl, erl_eunit_suite_file("not_a_real_src_" ++ Name ++ ".erl")).
write_app_file(Dir, Name, Version, Deps) ->
Filename = filename:join([Dir, "ebin", Name ++ ".app"]),
ok = filelib:ensure_dir(Filename),
ok = ec_file:write_term(Filename, get_app_metadata(ec_cnv:to_list(Name), Version, Deps)).
write_app_src_file(Dir, Name, Version, Deps) ->
Filename = filename:join([Dir, "src", Name ++ ".app.src"]),
ok = filelib:ensure_dir(Filename),
ok = ec_file:write_term(Filename, get_app_metadata(ec_cnv:to_list(Name), Version, Deps)).
erl_src_file(Name) ->
io_lib:format("-module('~s').\n"
"-export([main/0]).\n"
"main() -> ok.\n", [filename:basename(Name, ".erl")]).
plugin_src_file(Name) ->
io_lib:format("-module('~s').\n"
"-export([init/1, do/1]).\n"
"init(State) -> \n"
"Provider = providers:create([\n"
"{name, '~s'},\n"
"{module, '~s'}\n"
"]),\n"
"{ok, rebar_state:add_provider(State, Provider)}.\n"
"do(State) -> {ok, State}.\n", [filename:basename(Name, ".erl"),
filename:basename(Name, ".erl"),
filename:basename(Name, ".erl")]).
erl_eunitized_src_file(Name) ->
io_lib:format("-module('~s').\n"
"-export([main/0]).\n"
"main() -> ok.\n"
"-ifdef(TEST).\n"
"-include_lib(\"eunit/include/eunit.hrl\").\n"
"some_test_() -> ?_assertEqual(ok, main()).\n"
"-endif.\n", [filename:basename(Name, ".erl")]).
erl_eunit_suite_file(Name) ->
BaseName = filename:basename(Name, ".erl"),
io_lib:format("-module('~s_tests').\n"
"-compile(export_all).\n"
"-ifndef(some_define).\n"
"-define(some_define, false).\n"
"-endif.\n"
"-ifdef(TEST).\n"
"-include_lib(\"eunit/include/eunit.hrl\").\n"
"some_test_() -> ?_assertEqual(ok, ~s:main()).\n"
"define_test_() -> ?_assertEqual(true, ?some_define).\n"
"-endif.\n", [BaseName, BaseName]).
get_app_metadata(Name, Vsn, Deps) ->
{application, erlang:list_to_atom(Name),
[{description, ""},
{vsn, Vsn},
{modules, []},
{included_applications, []},
{registered, []},
{applications, Deps}]}.
package_app(AppDir, DestDir, PkgName, PkgVsn) ->
AppSrc = filename:join(AppDir, "src"),
{ok, Fs} = rebar_utils:list_dir(AppSrc),
Files = lists:zip([filename:join("src", F) || F <- Fs], [filename:join(AppSrc,F) || F <- Fs]),
Metadata = #{<<"app">> => list_to_binary(PkgName),
<<"version">> => list_to_binary(PkgVsn)},
{ok, #{tarball := Tarball, outer_checksum := <<Checksum:256/big-unsigned-integer>>}} = r3_hex_tarball:create(Metadata, Files),
Name = PkgName++"-"++PkgVsn++".tar",
Archive = filename:join(DestDir, Name),
file:write_file(Archive, Tarball),
<<E:128/big-unsigned-integer>> = crypto:hash(md5, Tarball),
Checksum1 = list_to_binary(
rebar_string:uppercase(
lists:flatten(io_lib:format("~64.16.0b", [Checksum])))),
{Checksum1, E}.
random_element(Repos) ->
Index = rand:uniform(length(Repos)),
lists:nth(Index, Repos).