Fix false positive for UnsafeToAtom

Refs #1148

Author: rrrene

lib/credo/check/warning/unsafe_to_atom.ex

@@ -52,6 +52,11 @@ defmodule Credo.Check.Warning.UnsafeToAtom do
     {nil, issues}
   end
 
+  # module.unquote(:"some_atom")
+  defp traverse({{:., _, [_, :unquote]}, _, [_ | _] = _args}, issues, _) do
+    {nil, issues}
+  end
+
   defp traverse(
          {:|>, _meta1, [_lhs, {{:., _meta2, call}, meta, args}]} = ast,
          issues,

test/credo/check/warning/unsafe_to_atom_test.exs

@@ -35,6 +35,8 @@ defmodule Credo.Check.Warning.UnsafeToAtomTest do
 
       def convert_erlang_binary(parameter) do
         :erlang.binary_to_existing_atom(parameter, :utf8)
+
+        unquote(context).unquote(:"get_#{type}_by")(id: id)
       end
 
       for n <- 1..4 do