chore: fix arity option

Author: zachdaniel

lib/igniter/refactors/rename.ex

@@ -23,6 +23,8 @@ defmodule Igniter.Refactors.Rename do
   def rename_function(igniter, old, new, opts \\ [])
 
   def rename_function(igniter, {old_module, old_function}, {new_module, new_function}, opts) do
+    opts = Keyword.put(opts, :arity, opts[:arity] || :any)
+
     Igniter.update_all_elixir_files(igniter, fn zipper ->
       Enum.reduce(List.wrap(opts[:arity]), {:ok, zipper}, fn arity, {:ok, zipper} ->
         with {:ok, zipper} <-

test/igniter/refactors/renames_test.exs

@@ -111,8 +111,7 @@ defmodule Igniter.Refactors.RenameTest do
     |> apply_igniter!()
     |> Igniter.Refactors.Rename.rename_function(
       {Example, :some_function},
-      {Example, :some_other_function},
-      arity: 0
+      {Example, :some_other_function}
     )
     |> assert_content_equals("lib/example.ex", """
     defmodule Example do