Unit testing tools allow us to check that key invariants of our programs continue to hold under refactoring.

单元测试工具使我们能够检查重整情况下继续保持的程序的关键不变量。

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Unit validators can check the capabilities, requirements, attributes, and links on the unit and ensure that the unit is properly configured as a whole.

单元确认器会检查单元上的功能，需求，属性以及链接，以确保单元会作为一个整体进行配置。

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If we choose a smaller unit, the writer needs to check the unit in all its contexts to make sure that information flows correctly.

如果我们选择小一些的单元，作者需要核对所有上下文的单元，以确保信息流正确。

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Darren Humphries of SmartMobileAssets wonders where the NXT is, and points out that he's spoken with Data Evolution CEO Robert Sowah, who promised him a review unit to check out, but has recently stopped returning his calls.

ENGADGET: So where's the Clio NXT?

The iPhone app is already available in iTunes and some forum posters report they've already been able to preorder the unit, but check DBSTalk for their breakdown and the device's manual in PDF form before making a decision on your placeshifting future.

ENGADGET: DirecTV Nomad is ready to launch, transcodes DVRed shows for mobile viewing

John Ceriale, a consultant to Blackstone Real Estate Partners, has asked NTM to find marketers that want to direct TV ads and product samples to people who check into Blackstone's 670-unit Extended Stay Hotels.

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