Send emails i18n'd using backend-stored user language

test/pleroma/emails/user_email_test.exs

@@ -56,4 +56,16 @@ defmodule Pleroma.Emails.UserEmailTest do
     assert email.subject == "Your account is awaiting approval"
     assert email.html_body =~ "Awaiting Approval"
   end
+
+  test "email i18n" do
+    user = insert(:user, language: "en_test")
+    email = UserEmail.approval_pending_email(user)
+    assert email.subject == "xxYour account is awaiting approvalxx"
+  end
+
+  test "email i18n should fallback to default locale if user language is unsupported" do
+    user = insert(:user, language: "unsupported")
+    email = UserEmail.approval_pending_email(user)
+    assert email.subject == "Your account is awaiting approval"
+  end
 end