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path: root/test/rebar_deps_SUITE.erl
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%%% TODO: check that warnings are appearing
-module(rebar_deps_SUITE).
-compile(export_all).
-include_lib("common_test/include/ct.hrl").
-include_lib("eunit/include/eunit.hrl").

all() -> [flat, pick_highest_left, pick_highest_right, pick_earliest].

init_per_suite(Config) ->
    application:start(meck),
    Config.

end_per_suite(_Config) ->
    application:stop(meck).

init_per_testcase(Case, Config) ->
    {Deps, Expect} = deps(Case),
    [{expect,
      [case Dep of
        {N,V} -> {dep, N, V};
        N -> {dep, N}
       end || Dep <- Expect]}
     | setup_project(Case, Config, expand_deps(Deps))].

deps(flat) ->
    {[{"B", []},
      {"C", []}],
     ["B", "C"]};
deps(pick_highest_left) ->
    {[{"B", [{"C", "2", []}]},
      {"C", "1", []}],
     ["B", {"C", "1"}]}; % Warn C2
deps(pick_highest_right) ->
    {[{"B", "1", []},
      {"C", [{"B", "2", []}]}],
     [{"B","1"}, "C"]}; % Warn B2
deps(pick_earliest) ->
    {[{"B", [{"D", "1", []}]},
      {"C", [{"D", "2", []}]}],
     ["B","C",{"D","1"}]}. % Warn D2

end_per_testcase(_, Config) ->
    mock_git_resource:unmock(),
    meck:unload(),
    Config.

expand_deps([]) -> [];
expand_deps([{Name, Deps} | Rest]) ->
    Dep = {Name, ".*", {git, "https://example.org/user/"++Name++".git", "master"}},
    [{Dep, expand_deps(Deps)} | expand_deps(Rest)];
expand_deps([{Name, Vsn, Deps} | Rest]) ->
    Dep = {Name, Vsn, {git, "https://example.org/user/"++Name++".git", {tag, Vsn}}},
    [{Dep, expand_deps(Deps)} | expand_deps(Rest)].

setup_project(Case, Config0, Deps) ->
    Config = rebar_test_utils:init_rebar_state(Config0, atom_to_list(Case)),
    AppDir = ?config(apps, Config),
    TopDeps = top_level_deps(Deps),
    RebarConf = rebar_test_utils:create_config(AppDir, [{deps, TopDeps}]),
    mock_git_resource:mock([{deps, flat_deps(Deps)}]),
    [{rebarconfig, RebarConf} | Config].


flat_deps([]) -> [];
flat_deps([{{Name,_Vsn,_Ref}, Deps} | Rest]) ->
    [{Name, top_level_deps(Deps)}]
    ++
    flat_deps(Deps)
    ++
    flat_deps(Rest).

top_level_deps(Deps) -> [{list_to_atom(Name),Vsn,Ref} || {{Name,Vsn,Ref},_} <- Deps].

%%% TESTS %%%
flat(Config) -> run(Config).
pick_highest_left(Config) -> run(Config).
pick_highest_right(Config) -> run(Config).
pick_earliest(Config) -> run(Config).

run(Config) ->
    {ok, RebarConfig} = file:consult(?config(rebarconfig, Config)),
    rebar_test_utils:run_and_check(
        Config, RebarConfig, "install_deps", ?config(expect, Config)
    ).