Propagate oauth_exchange to organization repos

Organization repos inherit config from their parent via
default_organization but oauth_exchange and oauth_exchange_url were not
being propagated. This meant org repos like hexpm:rtpacnroll never had
the oauth_exchange key set, falling back to the default of false in
build_hex_core_config instead of inheriting true from hexpm.

Author: ericmj

lib/hex/repo.ex

@@ -48,10 +48,18 @@ defmodule Hex.Repo do
     public_key = merge_values(Map.get(repo, :public_key), source.public_key)
     auth_key = merge_values(Map.get(repo, :auth_key), source.auth_key)
 
+    oauth_exchange =
+      merge_values(Map.get(repo, :oauth_exchange), Map.get(source, :oauth_exchange))
+
+    oauth_exchange_url =
+      merge_values(Map.get(repo, :oauth_exchange_url), Map.get(source, :oauth_exchange_url))
+
     repo
     |> Map.put(:url, url)
     |> Map.put(:public_key, public_key)
     |> Map.put(:auth_key, auth_key)
+    |> Map.put(:oauth_exchange, oauth_exchange)
+    |> Map.put(:oauth_exchange_url, oauth_exchange_url)
     |> Map.put(:trusted, Map.has_key?(repo, :auth_key) or source.trusted)
   end
 

test/hex/repo_test.exs

@@ -107,6 +107,7 @@ defmodule Hex.RepoTest do
     assert {:ok,
             %{
               auth_key: nil,
+              oauth_exchange: true,
               public_key: _,
               trusted: true,
               url: "http://localhost:4043/repo/repos/acme"
@@ -126,6 +127,7 @@ defmodule Hex.RepoTest do
     assert {:ok,
             %{
               auth_key: "key",
+              oauth_exchange: true,
               public_key: _,
               trusted: true,
               url: "http://example.com/repos/acme"
@@ -145,6 +147,7 @@ defmodule Hex.RepoTest do
     assert {:ok,
             %{
               auth_key: "key",
+              oauth_exchange: true,
               public_key: _,
               trusted: false,
               url: "http://example.com/repos/acme"
@@ -160,6 +163,7 @@ defmodule Hex.RepoTest do
         url: "http://example.com",
         public_key: "public",
         auth_key: "auth",
+        oauth_exchange: true,
         trusted: true
       },
       "hexpm:acme" => %{}
@@ -168,6 +172,7 @@ defmodule Hex.RepoTest do
     assert %{
              "hexpm:acme" => %{
                auth_key: "auth",
+               oauth_exchange: true,
                public_key: "public",
                trusted: true,
                url: "http://example.com/repos/acme"