有时候我们写好的类库中，某些类的属性和方法不应该暴露出来，那么如何对这些非public的方法和属性进行单元测试？
MS为我们提供了PrivateObject类，可以解决这个问题，可以去MSDN的说明文档中查看这个类的介绍。本文也试举一例，说明其用法。
首先给出被测试类，为了比较全面，我们在其中包含了public属性、protected属性、private属性等等，如下
/// <summary> /// Implementation of a class with non-public members. /// </summary> public class Testee { #region Public Properties /// <summary> /// Gets / sets the value of a public property. /// </summary> public string PublicProperty { get; set; } #endregion Public Properties #region Protected Properties /// <summary> /// Gets / sets the value of a protected property. /// </summary> protected string ProtectedProperty { get; set; } #endregion Protected Properties #region Private Properties /// <summary> /// Gets / sets the value of a private property. /// </summary> private string PrivateProperty { get; set; } #endregion Private Properties #region Private Static Properties /// <summary> /// Gets / sets the value of a private static property. /// </summary> private static string PrivateStaticProperty { get; set; } #endregion Private Static Properties #region Protected Methods /// <summary> /// A simple protected method with a parameter. /// </summary> /// <param name="parameter">The parameter</param> /// <returns>Another string.</returns> protected string ProtectedMethod(string parameter) { Console.WriteLine("Parameter: >{0}<", parameter); return (parameter + " processed"); } #endregion Protected Methods }
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