Based on use cases, testing can progress on a limited level since use cases only describe the interactions between actors and the system.

基于这些用例，测试可以在一个受限层次上进行，因为用例只描述执行者和系统的交互。

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Use stubs for state based testing, use mocks for interaction based testing.

用stub来做基于状态的测试，使用mock做基于交互的测试。

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When performing testing based on use cases, the most obvious technique is the process cycle test (or algorithm test).

当执行基于用例的测试时，最明显的技术是过程循环测试(或规则测试)。

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Of course good testers do it a bit more fancy than this, they use risk based testing and apply sound testing techniques.

FORBES: Machiel van der Bijl On Automated Software Testing

Dr Schmidt says that various firms are now testing his feather-based plastics for use in such things as biodegradable nappies and home insulation.

ECONOMIST: Flights of fancy

Mr Lansley says he will draw the review team's attention to the work of the Surgical Materials Testing Laboratory based in Bridgend, after Ms Griffiths suggested the English NHS might wish to use it.

BBC: Andrew Lansley