Move record warning to warning test file

Author: José Valim

lib/elixir/test/elixir/kernel/warning_test.exs

@@ -1674,6 +1674,21 @@ defmodule Kernel.WarningTest do
     assert message =~ "\"else\" shouldn't be used as the only clause in \"try\""
   end
 
+  test "warns on bad record update input" do
+    assert capture_err(fn ->
+             defmodule Sample do
+               require Record
+               Record.defrecord(:user, __MODULE__, name: "john", age: 25)
+
+               def fun do
+                 user(user(), _: :_, name: "meg")
+               end
+             end
+           end) =~ "updating a record with a default (:_) is equivalent to creating a new record"
+  after
+    purge([Sample])
+  end
+
   defp purge(list) when is_list(list) do
     Enum.each(list, &purge/1)
   end

lib/elixir/test/elixir/record_test.exs

@@ -129,19 +129,6 @@ defmodule RecordTest do
     refute match?(user(_: "other"), user())
   end
 
-  test "warns when updating a record with default value" do
-    captured =
-      capture_io(:stderr, fn ->
-        expanded = Macro.expand(quote(do: user(user(), _: :_, name: "meg")), __ENV__)
-        {record, _} = Code.eval_quoted(expanded)
-
-        assert user(record, :name) == "meg"
-        assert user(record, :age) == :_
-      end)
-
-    assert captured =~ "updating a record with a default"
-  end
-
   Record.defrecord(
     :defaults,
     struct: ~D[2016-01-01],