Add test for slug to ID with ID is out of range

We were testing the behavior of out of range ID's on where queries but
not when out of range slugs are converted to ID's.

activerecord/test/cases/base_test.rb

@@ -538,6 +538,10 @@ def test_find_by_slug
     assert_equal Topic.find("1-meowmeow"), Topic.find(1)
   end
 
+  def test_out_of_range_slugs
+    assert_equal [Topic.find(1)], Topic.where(id: ["1-meowmeow", "9223372036854775808-hello"])
+  end
+
   def test_find_by_slug_with_array
     assert_equal Topic.find([1, 2]), Topic.find(["1-meowmeow", "2-hello"])
     assert_equal "The Second Topic of the day", Topic.find(["2-hello", "1-meowmeow"]).first.title