Basic package aliasing tests

2 files changed, 145 insertions, 1 deletions

diff --git a/test/rebar_pkg_alias_SUITE.erl b/test/rebar_pkg_alias_SUITE.erl
new file mode 100644
index 0000000..f7fa5d4
--- /dev/null
+++ b/test/rebar_pkg_alias_SUITE.erl
@@ -0,0 +1,121 @@
+-module(rebar_pkg_alias_SUITE).
+-compile(export_all).
+-include_lib("common_test/include/ct.hrl").
+-include_lib("eunit/include/eunit.hrl").
+-include_lib("kernel/include/file.hrl").
+
+all() -> [same_alias, diff_alias, diff_alias_vsn].
+
+%% {uuid, {pkg, uuid}} = uuid
+%% {uuid, {pkg, alias}} = uuid on disk
+%% another run should yield the same lock file without error
+init_per_suite(Config) ->
+    mock_config(?MODULE, Config).
+
+end_per_suite(Config) ->
+    unmock_config(Config).
+
+init_per_testcase(same_alias, Config0) ->
+    Config = rebar_test_utils:init_rebar_state(Config0,"same_alias_"),
+    AppDir = ?config(apps, Config),
+    rebar_test_utils:create_app(AppDir, "A", "0.0.0", [kernel, stdlib]),
+    RebarConf = rebar_test_utils:create_config(AppDir, [{deps, [{fakelib, {pkg, fakelib}}]}]),
+    [{rebarconfig, RebarConf} | Config];
+init_per_testcase(diff_alias, Config0) ->
+    Config = rebar_test_utils:init_rebar_state(Config0,"diff_alias_"),
+    AppDir = ?config(apps, Config),
+    rebar_test_utils:create_app(AppDir, "A", "0.0.0", [kernel, stdlib]),
+    RebarConf = rebar_test_utils:create_config(AppDir, [{deps, [{fakelib, {pkg, goodpkg}}]}]),
+    [{rebarconfig, RebarConf} | Config];
+init_per_testcase(diff_alias_vsn, Config0) ->
+    Config = rebar_test_utils:init_rebar_state(Config0,"diff_alias_vsn_"),
+    AppDir = ?config(apps, Config),
+    rebar_test_utils:create_app(AppDir, "A", "0.0.0", [kernel, stdlib]),
+    RebarConf = rebar_test_utils:create_config(AppDir, [{deps, [{fakelib, "1.0.0", {pkg, goodpkg}}]}]),
+    [{rebarconfig, RebarConf} | Config].
+
+end_per_testcase(_, Config) ->
+    Config.
+
+same_alias(Config) ->
+    {ok, RebarConfig} = file:consult(?config(rebarconfig, Config)),
+    rebar_test_utils:run_and_check(
+        Config, RebarConfig, ["lock"],
+        {ok, [{lock, "fakelib"}, {dep, "fakelib"}]}
+    ).
+
+diff_alias(Config) ->
+    %% even though the dep is 'fakelib' aliased as 'goodpkg' all
+    %% internal records use 'fakelib' as a value. Just make sure
+    %% the lock actually maintains the proper source as 'goodpkg'
+    AppDir = ?config(apps, Config),
+    Lockfile = filename:join([AppDir, "rebar.lock"]),
+    {ok, RebarConfig} = file:consult(?config(rebarconfig, Config)),
+    rebar_test_utils:run_and_check(
+        Config, RebarConfig, ["lock"],
+        {ok, [{lock, "fakelib"},{dep, "fakelib"}]}
+    ),
+    {ok, [LockData]} = file:consult(Lockfile),
+    ?assert(lists:any(fun({<<"fakelib">>,{pkg,<<"goodpkg">>,_},_}) -> true
+                      ;  (_) -> false end, LockData)),
+    %% An second run yields the same
+    rebar_test_utils:run_and_check(
+        Config, RebarConfig, ["lock"],
+        {ok, [{lock, "fakelib"},{dep, "fakelib"}]}
+    ),
+    {ok, [LockData]} = file:consult(Lockfile),
+    %% So does an upgrade
+    rebar_test_utils:run_and_check(
+        Config, RebarConfig, ["upgrade"],
+        {ok, [{lock, "fakelib"},{dep, "fakelib"}]}
+    ),
+    {ok, [LockData]} = file:consult(Lockfile).
+
+diff_alias_vsn(Config) -> diff_alias(Config).
+
+mock_config(Name, Config) ->
+    Priv = ?config(priv_dir, Config),
+    AppDir = filename:join([Priv, "fakelib"]),
+    CacheRoot = filename:join([Priv, "cache", atom_to_list(Name)]),
+    TmpDir = filename:join([Priv, "tmp", atom_to_list(Name)]),
+    CacheDir = filename:join([CacheRoot, "hex", "com", "test", "packages"]),
+    filelib:ensure_dir(filename:join([CacheDir, "registry"])),
+    rebar_test_utils:create_app(AppDir, "fakelib", "1.0.0", [kernel, stdlib]),
+    {Chk,Etag} = rebar_test_utils:package_app(AppDir, CacheDir, "fakelib-1.0.0"),
+    {Chk,Etag} = rebar_test_utils:package_app(AppDir, CacheDir, "goodpkg-1.0.0"),
+
+    Tid = ets:new(registry_table, [public]),
+    ets:insert_new(Tid, [
+        {<<"fakelib">>,[[<<"1.0.0">>]]},
+        {<<"goodpkg">>,[[<<"1.0.0">>]]},
+        {{<<"fakelib">>,<<"1.0.0">>}, [[], Chk, [<<"rebar3">>]]},
+        {{<<"goodpkg">>,<<"1.0.0">>}, [[], Chk, [<<"rebar3">>]]}
+    ]),
+    ok = ets:tab2file(Tid, filename:join([CacheDir, "registry"])),
+    ets:delete(Tid),
+    %% The state returns us a fake registry
+    meck:new(rebar_dir, [passthrough, no_link]),
+    meck:expect(rebar_dir, global_cache_dir, fun(_) -> CacheRoot end),
+
+    meck:new(rebar_packages, [passthrough, no_link]),
+    meck:expect(rebar_packages, registry_dir, fun(_) -> CacheDir end),
+    meck:expect(rebar_packages, package_dir, fun(_) -> CacheDir end),
+    rebar_prv_update:hex_to_index(rebar_state:new()),
+
+    %% Cache fetches are mocked -- we assume the server and clients are
+    %% correctly used.
+    meck:new(httpc, [passthrough, unsticky, no_link]),
+    meck:expect(httpc, request,
+            fun(get, {_Url, _Opts}, _, _, _) ->
+                {ok, {{<<"1.0.0">>, 304, <<"Not Modified">>}, [{"etag", Etag}], <<>>}}
+            end),
+    %% Move all packages to cache
+    NewConf = [{cache_root, CacheRoot},
+               {cache_dir, CacheDir},
+               {tmp_dir, TmpDir},
+               {mock_table, Tid} | Config],
+    NewConf.
+
+unmock_config(Config) ->
+    meck:unload(),
+    Config.
diff --git a/test/rebar_test_utils.erl b/test/rebar_test_utils.erl
index c07df68..8d1d408 100644
--- a/test/rebar_test_utils.erl
+++ b/test/rebar_test_utils.erl
@@ -3,7 +3,8 @@
 -include_lib("eunit/include/eunit.hrl").
 -export([init_rebar_state/1, init_rebar_state/2, run_and_check/4]).
 -export([expand_deps/2, flat_deps/1, top_level_deps/1]).
--export([create_app/4, create_eunit_app/4, create_empty_app/4, create_config/2]).
+-export([create_app/4, create_eunit_app/4, create_empty_app/4, create_config/2,
+         package_app/3]).
 -export([create_random_name/1, create_random_vsn/0, write_src_file/2]).
 
 %%%%%%%%%%%%%%
@@ -418,3 +419,25 @@ get_app_metadata(Name, Vsn, Deps) ->
       {included_applications, []},
       {registered, []},
       {applications, Deps}]}.
+
+package_app(AppDir, DestDir, PkgName) ->
+    Name = PkgName++".tar",
+    {ok, Fs} = file:list_dir(AppDir),
+    ok = erl_tar:create(filename:join(DestDir, "contents.tar.gz"),
+                        lists:zip(Fs, [filename:join(AppDir,F) || F <- Fs]),
+                        [compressed]),
+    ok = file:write_file(filename:join(DestDir, "metadata.config"), "who cares"),
+    ok = file:write_file(filename:join(DestDir, "VERSION"), "3"),
+    {ok, Contents} = file:read_file(filename:join(DestDir, "contents.tar.gz")),
+    Blob = <<"3who cares", Contents/binary>>,
+    <<X:256/big-unsigned>> = crypto:hash(sha256, Blob),
+    BinChecksum = list_to_binary(string:to_upper(lists:flatten(io_lib:format("~64.16.0b", [X])))),
+    ok = file:write_file(filename:join(DestDir, "CHECKSUM"), BinChecksum),
+    PkgFiles = ["contents.tar.gz", "VERSION", "metadata.config", "CHECKSUM"],
+    Archive = filename:join(DestDir, Name),
+    ok = erl_tar:create(Archive,
+                        lists:zip(PkgFiles, [filename:join(DestDir,F) || F <- PkgFiles])),
+    {ok, BinFull} = file:read_file(Archive),
+    <<E:128/big-unsigned-integer>> = crypto:hash(md5, BinFull),
+    Etag = string:to_lower(lists:flatten(io_lib:format("~32.16.0b", [E]))),
+    {BinChecksum, Etag}.