编程式的代理创建在编写基础结构代码和测试时比较有用，但在通常的业务应用中并不经常使用。

Programmatic proxy creation is useful when writing infrastructure code and tests, but is not often used in regular business applications.

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下图显示可能为多层式应用程式使用测试控制器和测试代理程式执行自动化测试的情形。

The following illustration shows how automated tests might be run for a multi-tier application using a test controller and test agents.

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