switch to identifier/1 in tests to avoid warnings

Author: ruslandoga

test/ecto/adapters/sqlite3/connection/select_test.exs

@@ -157,10 +157,10 @@ defmodule Ecto.Adapters.SQLite3.Connection.SelectTest do
       assert ~s{SELECT downcase(s0."x") FROM "schema" AS s0} == all(query)
     end
 
-    test "collating with literal" do
+    test "collating with identifier" do
       query =
         Schema
-        |> select([r], fragment("? COLLATE ?", r.x, literal(^"es_ES")))
+        |> select([r], fragment("? COLLATE ?", r.x, identifier(^"es_ES")))
         |> plan()
 
       assert ~s{SELECT s0."x" COLLATE "es_ES" FROM "schema" AS s0} == all(query)

test/ecto/integration/crud_test.exs

@@ -272,11 +272,11 @@ defmodule Ecto.Integration.CrudTest do
       assert [_] = TestRepo.all(from(a in Account, as: :user, where: exists(subquery)))
     end
 
-    test "can handle fragment literal" do
+    test "can handle fragment identifier" do
       account1 = TestRepo.insert!(%Account{name: "Main"})
 
       name = "name"
-      query = from(a in Account, where: fragment("? = ?", literal(^name), "Main"))
+      query = from(a in Account, where: fragment("? = ?", identifier(^name), "Main"))
 
       assert [account] = TestRepo.all(query)
       assert account.id == account1.id