在测试项目的早期阶段，您可以提供高层次的完成测试计划活动所需时间的估计，以及运行所有测试所需的时间和精力的估计。

In the early stages of a test project, you can provide high-level estimates of the time required to complete your test planning activities, and the time or effort required to run all of your tests.

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第十二章提醒我们要利用测试和重构，来驱动高层设计与底层决定。

Chapter 12 reminds us to rely on tests and refactoring to drive our high-level design as well as our low-level decisions.

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第 2 部分将进一步深入查看 Rails 的测试，包括运行更高层次测试（叫做功能测试和集成测试）的代码。

Part 2 takes a deeper look into Rails testing, including code to run higher-level tests called functional and integration tests.

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