public void ConcatTest() { StringBuilder stringBuilder = null; // TODO: 初始化为适当的值 StringBuilder stringBuilderExpected = null; // TODO: 初始化为适当的值 string strString = string.Empty; // TODO: 初始化为适当的值 string strString2 = string.Empty; // TODO: 初始化为适当的值 ConvertString.Concat(ref stringBuilder, strString, strString2); Assert.AreEqual(stringBuilderExpected, stringBuilder); Assert.Inconclusive("无法验证不返回值的方法。"); }