blocks|key|4791220|text|这并不是对你问题的真正回答，而是另一种方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4791221|在app.config中，将smtp设置改为deliver+the+mails+as+files+to+a+local+directory。然后，您可以加载该文件并检查assert部分中的内容。|offset|length|4791222|您必须为断言编写更多的代码(或者最好创建一些帮助函数)，但是您不必执行任何影响生产代码的操作。|4791223|entityMap|0|LINK|mutability|MUTABLE|url|http://coding.abel.nu/2012/04/send-smtpclient-mails-to-disk/^0|0|M|1B|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

This isn't really an answer to your question, but an alternative aproach:

In the app.config, set up the smtp settings to <a href="http://coding.abel.nu/2012/04/send-smtpclient-mails-to-disk/">deliver the mails as files to a local directory</a> instead. Then you can load the file and check the contents in your assert section. 

You'll have to write a bit more code for the assertion (or preferably create some helper functions) but you won't have to do anything that affects the production code.

blocks|key|2678161|text|您可以创建一个接口，该接口将公开将从SmtpClient使用的函数|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2678162|public+interface+ISmtpClient+++
++++{
++++++++void+Send(MailMessage+mailMessage);
++++}|code-block|syntax|javascript|2678163|然后创建你的具体类，它将做真正的工作。|2678164|+public+class+SmtpClientWrapper+:+ISmtpClient
++++{
++++++++public+SmtpClient+SmtpClient+{+get;+set;+}
++++++++public+SmtpClientWrapper(string+host,+int+port)
++++++++{
++++++++++++SmtpClient+=+new+SmtpClient(host,+port);
++++++++}
++++++++public+void+Send(MailMessage+mailMessage)
++++++++{
++++++++++++SmtpClient.Send(mailMessage);
++++++++}
++++}|2678165|在你的测试方法中，你现在可以模拟它并使用like；|2678166|[TestMethod()]
++++++++public+void+SendTest()
++++++++{
++++++++++++Mock<ISmtpClient>+smtpClient+=+new+Mock<ISmtpClient>();
++++++++++++SmtpProvider+smtpProvider+=+new+SmtpProvider(smtpClient.Object);
++++++++++++string+@from+=+"from@from.com";
++++++++++++string+to+=+"to@to.com";
++++++++++++bool+send+=+smtpProvider.Send(@from,+to);
++++++++++++Assert.IsTrue(send);
++++++++}|2678167|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

You can create an interface which will expose functions that will be used from SmtpClient

<pre><code>public interface ISmtpClient 
 {
 void Send(MailMessage mailMessage);
 }
</code></pre>

Then create your Concrete class which will do real job.

<pre><code> public class SmtpClientWrapper : ISmtpClient
 {
 public SmtpClient SmtpClient { get; set; }
 public SmtpClientWrapper(string host, int port)
 {
 SmtpClient = new SmtpClient(host, port);
 }
 public void Send(MailMessage mailMessage)
 {
 SmtpClient.Send(mailMessage);
 }
 }
</code></pre>

In your test method now you can mock it and use like;

<pre><code>[TestMethod()]
 public void SendTest()
 {
 Mock&lt;ISmtpClient&gt; smtpClient = new Mock&lt;ISmtpClient&gt;();
 SmtpProvider smtpProvider = new SmtpProvider(smtpClient.Object);
 string @from = "from@from.com";
 string to = "to@to.com";
 bool send = smtpProvider.Send(@from, to);
 Assert.IsTrue(send);
 }
</code></pre>

blocks|key|2678185|text|另一种选择是使用nDumbster|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2678186|Install-Package+nDumbster|style|CODE|2678187|它在内存中运行Smtp服务器，然后您可以对照该服务器进行验证。它将它更多地转变为集成测试，但通常这些测试比单元测试更有价值，因为您希望测试SmtpClient的使用情况也是正确的。|2678188|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/EdenRidgway/nDumbster^0|8|9|0|0|0|P|0|1X|A|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@$A|W|B|X|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|Y|8|@$A|Z|B|10|F|G]]|9|@]|C|$]]|$1|J|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]]]

Another alternative is to use <a href="https://github.com/EdenRidgway/nDumbster" rel="noreferrer">nDumbster</a>:

<code>Install-Package nDumbster</code>

It runs an Smtp server in memory, which you can then verify against. It turns it more into an integration test, but generally those are higher value than unit tests, as you want to test the <code>SmtpClient</code> usage is also correct.

blocks|key|2678198|text|Teoman+shipahi提供的此answer的一个版本，可正确处理SmtpClient。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2678199|首先让ISmtpClient继承IDisposable|2678200|public+interface+ISmtpClient+:+IDisposable
{
++++void+Send(MailMessage+mailMessage);
}|code-block|syntax|javascript|2678201|然后在SmtpClientWrapper类中实现IDisposable：|2678202|public+class+SmtpClientWrapper+:+ISmtpClient
{
++++private+bool+disposed;
++++private+readonly+SmtpClient+smtpClient;

++++public+SmtpClientWrapper(string+host,+int+port)
++++{
++++++++smtpClient+=+new+SmtpClient(host,+port);
++++}

++++~SmtpClientWrapper()
++++{
++++++++Dispose(false);
++++}

++++public+void+Dispose()
++++{
++++++++Dispose(true);
++++++++GC.SuppressFinalize(this);
++++}

++++protected+virtual+void+Dispose(bool+disposing)
++++{
++++++++if+(!disposed)
++++++++{
++++++++++++if+(disposing)
++++++++++++{
++++++++++++++++smtpClient?.Dispose();
++++++++++++}
++++++++++++disposed+=+true;
++++++++}
++++}

++++protected+void+CheckDisposed()
++++{
++++++++if+(disposed)
++++++++{
++++++++++++throw+new+ObjectDisposedException(nameof(SmtpClientWrapper));
++++++++}
++++}

++++public+void+Send(MailMessage+mailMessage)
++++{
++++++++CheckDisposed();
++++++++smtpClient.Send(mailMessage);
++++}
}|2678203|对于这个版本的SmtpClientWrapper，我删除了SmtpClient属性，以避免SmtpClient对象在SmtpClient属性的setter中被替换时不会被释放的问题。|2678204|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/users/929902/teoman-shipahi|1|https://stackoverflow.com/a/29905984/909882^0|Z|A|0|E|0|I|6|1|0|3|B|G|B|0|0|3|H|O|B|0|0|7|H|T|A|19|A|1M|A|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]|$9|18|A|19|1|1A]]|E|$]]|$1|F|3|G|5|6|7|1B|8|@$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1G|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1H|8|@$9|1I|A|1J|B|C]|$9|1K|A|1L|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|1M|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1N|8|@$9|1O|A|1P|B|C]|$9|1Q|A|1R|B|C]|$9|1S|A|1T|B|C]|$9|1U|A|1V|B|C]]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]|10|$5|V|W|X|E|$Y|11]]]]

A version of this <a href="https://stackoverflow.com/a/29905984/909882">answer</a> by <a href="https://stackoverflow.com/users/929902/teoman-shipahi">Teoman shipahi</a> that correctly disposes of the <code>SmtpClient</code>.

First make <code>ISmtpClient</code> inherit <code>IDisposable</code>:

<pre><code>public interface ISmtpClient : IDisposable
{
 void Send(MailMessage mailMessage);
}
</code></pre>

Then implement <code>IDisposable</code> in the <code>SmtpClientWrapper</code> class:

<pre><code>public class SmtpClientWrapper : ISmtpClient
{
 private bool disposed;
 private readonly SmtpClient smtpClient;

 public SmtpClientWrapper(string host, int port)
 {
 smtpClient = new SmtpClient(host, port);
 }

 ~SmtpClientWrapper()
 {
 Dispose(false);
 }

 public void Dispose()
 {
 Dispose(true);
 GC.SuppressFinalize(this);
 }

 protected virtual void Dispose(bool disposing)
 {
 if (!disposed)
 {
 if (disposing)
 {
 smtpClient?.Dispose();
 }
 disposed = true;
 }
 }

 protected void CheckDisposed()
 {
 if (disposed)
 {
 throw new ObjectDisposedException(nameof(SmtpClientWrapper));
 }
 }

 public void Send(MailMessage mailMessage)
 {
 CheckDisposed();
 smtpClient.Send(mailMessage);
 }
}
</code></pre>

For this version of <code>SmtpClientWrapper</code>, I have removed the <code>SmtpClient</code> property to avoid the problem of the <code>SmtpClient</code> objects not being disposed of when replaced in setter of the <code>SmtpClient</code> property.

I want to use it to fake <code>System.Net.Mail.SmtpClient</code> in a MS-Test UnitTest. Therefor I added a Fakes Assembmly of System.dll. Then I create a <code>ShimsContext</code> and a <code>StubSmtpClient</code>.

<pre><code>using (ShimsContext.Create())
{
 StubSmtpClient client = new StubSmtpClient(); 
}
</code></pre>

But what do I do with it?
The ultimate goal would be to write a Test which expects that the send Method is called with a object of <code>MailMessage</code>.

How to mock/fake SmtpClient in a UnitTest?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想用它在MS测试UnitTest中伪造System.Net.Mail.SmtpClient。因此，我添加了一个System.dll的伪造组件。然后创建一个ShimsContext和一个StubSmtpClient。using (ShimsContext.Create()){   StubSmtpClient clie...

问如何在UnitTest中模拟/伪造SmtpClient？
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问如何在UnitTest中模拟/伪造SmtpClient？EN