为什么证书对话框在单元测试中不显示 [英] Why Certificate Dialogs Don't Show in Unit Tests

问题描述

大家好，

我发现了似乎是一个错误的错误，但不确定.我有几个从VS 2010移植的单元测试，其中一些提示用户提示证书凭据(这意味着选择证书并授予单元测试许可以加密/解密数据).

I found what seems to be a bug, but I'm not sure.  I have several Unit tests that I ported from VS 2010 and some of them prompt the user for certificate credentials (meaning choosing a cert and granting the Unit Test permission to sing/decrypt data). 

我的问题是，我正在使用VS 2012，该操作系统在Windows 2012上运行，我不再看到该对话框，并且测试方法会无限期地暂停.完全没有显示错误信息.

My issue is now that I am using VS 2012, running on Windows 2012, I don't see the dialog anymore and the test method halts indefinitely.  No error information is shown at all. 

您知道为什么这种新行为会在VS 2012和/或Windows 2012中存在吗?

Any idea why this new behavior exists in VS 2012 and/or Windows 2012? 

示例代码

Example Code

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Security.Cryptography.X509Certificates;

namespace UnitTestProject1 {

	[TestClass]
	public class UnitTest1 {

		[TestMethod]
		public void TestMethod1() {

			var store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
			store.Open(OpenFlags.ReadOnly);
			var selectedCertificates = X509Certificate2UI
				.SelectFromCollection(store.Certificates, "Select Certificate", "Please select a certificate.", X509SelectionFlag.SingleSelection);

			// never gets here because UI is frozen
			Assert.IsTrue(selectedCertificates.Count > 0);
		}
	}
}

假设

1. 您的我的商店"中至少有一个证书
2. 您已将System.Security.dll添加到单元测试项目中

-拉沙德·里维拉(Rashad Rivera)www.omegusprime.com

- Rashad Rivera www.omegusprime.com

推荐答案

我怀疑新的单元测试框架是如何隐藏新对话框的，但是却不知道为什么会这样. t隐藏常规的MessageBox.Show(...).所以我想，如果我创建一个WPF窗口，显示它并传递该窗口的HWND值，该怎么办? 到SelectFromCollection方法.信不信由你，它行得通.参见下面的修改代码

I had a suspition that the new Unit Test Framework was some how hiding the new dialog, but could not understand why it won't hide a regular MessageBox.Show(...).  So I figured, what if I created a WPF window, show it and pass the window's HWND value to the SelectFromCollection method.  Believe it or not, it works.  See modified code below

新假设

1. 您将PresentationCore，PresentationFramework，System.Xaml和WindowsBase程序集添加到单元测试项目中.

新代码块

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Security.Cryptography.X509Certificates;
using System.Windows;
using System.Windows.Interop;
using System.Threading;

namespace UnitTestProject1 {

	[TestClass]
	public class UnitTest1 {

		X509Certificate2 m_UserCert;

		void ShowWindow() {

			var app = new Application();
			var wnd = new Window();
			wnd.Loaded += (s, e) => {

				var hwnd = new WindowInteropHelper(wnd).Handle;

				var store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
				store.Open(OpenFlags.ReadOnly);
				var selectedCertificates = X509Certificate2UI
					.SelectFromCollection(store.Certificates, "Select Certificate", "Please select a certificate.", X509SelectionFlag.SingleSelection, hwnd);

				m_UserCert = selectedCertificates[0];
				wnd.Close();
				//app.Shutdown(0);
			};
			var returnValue = app.Run(wnd);
			returnValue.ToString();
		}

		[TestMethod]
		public void TestMethod1() {

			var t = new Thread(this.ShowWindow);
			t.SetApartmentState(ApartmentState.STA);
			t.Start();

			do {
				Thread.Sleep(TimeSpan.FromSeconds(1));
			} while (t.IsAlive);

			// never gets here because UI is frozen
			Assert.IsNotNull(m_UserCert);
		}
	}
}

我仍然想知道是否可以将单元测试配置为不隐藏窗口，还是希望在将其提交给connect.microsoft.com之前获得作为错误或通过设计得到的确认.谢谢.

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