Use tmp dir instead of Dir.mktmpdir to create directory

activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb

@@ -24,15 +24,15 @@ def setup
       end
 
       def test_bad_connection
-        Dir.mktmpdir do |dir|
-          File.chmod(0x000, dir)
-          db_path = File.join(dir, "db/cant-be-created.db")
-          error = assert_raise ActiveRecord::NoDatabaseError do
-            connection = SQLite3Adapter.new(adapter: "sqlite3", database: db_path)
-            connection.drop_table "ex", if_exists: true
-          end
-          assert_kind_of ActiveRecord::ConnectionAdapters::NullPool, error.connection_pool
+        dir = "/tmp/should/_exist/"
+        FileUtils.mkdir_p dir
+        File.chmod(0x000, dir)
+        db_path = File.join(dir, "db/cant-be-created.db")
+        error = assert_raise ActiveRecord::NoDatabaseError do
+          connection = SQLite3Adapter.new(adapter: "sqlite3", database: db_path)
+          connection.drop_table "ex", if_exists: true
         end
+        assert_kind_of ActiveRecord::ConnectionAdapters::NullPool, error.connection_pool
       end
 
       def test_database_should_get_created_when_missing_parent_directories_for_database_path