public void 全てのTODOを削除すると完了メッセージが返ってくる()
        {
            //CSVの初期化
            startProcess.TestStartingBeforeOperation_ElemetsCountIs_7();
            var TM             = new TodolistManager();
            var expectedString = TM.ReturnMessageIsRemoveAllTodo();
            var returnString   = TM.RemoveAllTodo();

            Assert.AreEqual(expectedString, returnString);
        }
        public void TODOの全削除処理を呼び出すと完了メッセージが返ってくる()
        {
            //CSVの初期化
            startProcess.TestStartingBeforeOperation_ElemetsCountIs_7();
            var OM             = new OperationManager();
            var TM             = new TodolistManager();
            var expectedString = TM.ReturnMessageIsRemoveAllTodo();
            var requestString  = OM.InputedNumberProcessingSelect(7);

            Assert.AreEqual(expectedString, requestString);
        }