return literal/1 tests

Author: ruslandoga

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

@@ -157,6 +157,15 @@ 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
+      query =
+        Schema
+        |> select([r], fragment("? COLLATE ?", r.x, literal(^"es_ES")))
+        |> plan()
+
+      assert ~s{SELECT s0."x" COLLATE "es_ES" FROM "schema" AS s0} == all(query)
+    end
+
     test "collating with identifier" do
       query =
         Schema

test/ecto/integration/crud_test.exs

@@ -272,6 +272,16 @@ defmodule Ecto.Integration.CrudTest do
       assert [_] = TestRepo.all(from(a in Account, as: :user, where: exists(subquery)))
     end
 
+    test "can handle fragment literal" do
+      account1 = TestRepo.insert!(%Account{name: "Main"})
+
+      name = "name"
+      query = from(a in Account, where: fragment("? = ?", literal(^name), "Main"))
+
+      assert [account] = TestRepo.all(query)
+      assert account.id == account1.id
+    end
+
     test "can handle fragment identifier" do
       account1 = TestRepo.insert!(%Account{name: "Main"})