Add rebar_localfs_resource module for testing purposes

test/rebar_localfs_resource.erl

@@ -0,0 +1,38 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
+%% ex: ts=4 sw=4 et
+%%
+%% @doc A localfs custom resource (for testing purposes only)
+%%
+%% ```
+%% {deps, [
+%%     %% Application files are copied from "/path/to/app_name"
+%%     {app_name, {localfs, "/path/to/app_name", undefined}}
+%% ]}.
+%% '''
+-module(rebar_localfs_resource).
+
+-behaviour(rebar_resource).
+
+-export([lock/2
+        ,download/3
+        ,needs_update/2
+        ,make_vsn/1]).
+
+-include_lib("eunit/include/eunit.hrl").
+
+lock(AppDir, {localfs, Path, _Ref}) ->
+    lock(AppDir, {localfs, Path});
+lock(_AppDir, {localfs, Path}) ->
+    {localfs, Path, undefined}.
+
+needs_update(_AppDir, _Resource) ->
+    false.
+
+download(AppDir, {localfs, Path, _Ref}, State) ->
+    download(AppDir, {localfs, Path}, State);
+download(AppDir, {localfs, Path}, _State) ->
+    ok = rebar_file_utils:cp_r(filelib:wildcard(Path ++ "/*"), AppDir),
+    {ok, undefined}.
+
+make_vsn(_AppDir) ->
+    {plain, "undefined"}.