第二，剖析和优化测试套件。

Second, profile and optimize your test suite.

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而对于测试来说，测试用例的选择和优化是至关重要的。

The choice and prioritizing of test case is very important to testing.

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说明如何测试、优化和配置 。

Explains how to test, optimize, and profile .

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说明如何测试、优化和配置 。

Explains how to test, optimize, and profile .

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