Abort when file:consult/1 returns an error

 - Modified rebar_hex_repos:auth_config/1 to abort on error except in
 the case of enoent, in which we return an empty map.
 - added auth_config_errors test to test/rebar_pkg_repos_SUITE

src/rebar_hex_repos.erl

@@ -8,7 +8,7 @@
 
 -ifdef(TEST).
 %% exported for test purposes
--export([repos/1, merge_repos/1]).
+-export([repos/1, merge_repos/1, auth_config_file/1]).
 -endif.
 
 -include("rebar.hrl").
@@ -136,11 +136,21 @@ auth_config_file(State) ->
 
 -spec auth_config(rebar_state:t()) -> map().
 auth_config(State) ->
-    case file:consult(auth_config_file(State)) of
+    AuthFile = auth_config_file(State),
+    case file:consult(AuthFile) of
         {ok, [Config]} ->
             Config;
-        _ ->
-            #{}
+        {error, Reason} when is_atom(Reason) ->
+            case Reason of
+                enoent ->
+                    #{};
+                _ ->
+                    % TODO: map to an english reason
+                    ?ABORT("Error reading repos auth config (~ts) : ~ts", [AuthFile, atom_to_list(Reason)])
+            end;
+        {error, {_Line, _Mod, _Term} = Err} ->
+            Reason = file:format_error(Err),
+            ?ABORT("Error found in repos auth config (~ts) at line ~ts", [AuthFile, Reason])
     end.
 
 -spec update_auth_config(map(), rebar_state:t()) -> ok.

test/rebar_pkg_repos_SUITE.erl

@@ -9,7 +9,7 @@
 
 all() ->
     [default_repo, repo_merging, repo_replacing,
-     auth_merging, organization_merging, {group, resolve_version}].
+     auth_merging, auth_config_errors, organization_merging, {group, resolve_version}].
 
 groups() ->
     [{resolve_version, [use_first_repo_match, use_exact_with_hash, fail_repo_update,
@@ -119,7 +119,8 @@ init_per_testcase(optional_prereleases, Config) ->
                 fun(_State) -> true end),
 
     [{state, State} | Config];
-init_per_testcase(auth_merging, Config) ->
+init_per_testcase(Case, Config) when Case =:= auth_merging ;
+                                     Case =:= auth_config_errors ->
     meck:new(file, [passthrough, no_link, unstick]),
     meck:new(rebar_packages, [passthrough, no_link]),
     Config;
@@ -131,6 +132,7 @@ init_per_testcase(_, Config) ->
     Config.
 
 end_per_testcase(Case, _Config) when Case =:= auth_merging ;
+                                     Case =:= auth_config_errors ;
                                      Case =:= organization_merging ->
     meck:unload(file),
     meck:unload(rebar_packages);
@@ -234,6 +236,41 @@ auth_merging(_Config) ->
 
     ok.
 
+auth_config_errors(_Config) ->
+    Repo1 = #{name => <<"repo-1">>,
+              api_url => <<"repo-1/api">>},
+    Repo2 = #{name => <<"repo-2">>,
+              repo_url => <<"repo-2/repo">>,
+              repo_verify => false},
+
+    State = rebar_state:new([{hex, [{repos, [Repo1, Repo2]}]}]),
+    meck:expect(file, consult,
+                fun(_) ->
+                        {error, {3,erl_parse,["syntax error before: ","'=>'"]}}
+                end),
+
+    ?assertThrow(rebar_abort, rebar_pkg_resource:init(pkg, State)),
+    meck:expect(file, consult,
+                fun(_) ->
+                        {error, enoent}
+                end),
+
+
+    {ok, #resource{state=#{ repos := [
+                                      UpdatedRepo1,
+                                      UpdatedRepo2,
+                                      DefaultRepo
+                                     ]}}} =  rebar_pkg_resource:init(pkg, State),
+
+    ?assertEqual(undefined, maps:get(write_key, UpdatedRepo1, undefined)),
+    ?assertEqual(undefined, maps:get(read_key, UpdatedRepo1, undefined)),
+    ?assertEqual(undefined, maps:get(repos_key, UpdatedRepo1, undefined)),
+    ?assertEqual(undefined, maps:get(write_key, UpdatedRepo2, undefined)),
+    ?assertEqual(undefined, maps:get(repos_key, UpdatedRepo2, undefined)),
+    ?assertEqual(undefined, maps:get(read_key, UpdatedRepo2, undefined)),
+    ?assertEqual(undefined, maps:get(write_key, DefaultRepo, undefined)),
+    ok.
+
 organization_merging(_Config) ->
     Repo1 = #{name => <<"hexpm:repo-1">>,
               api_url => <<"repo-1/api">>},