Small feature request: test.name property

We're using nodeunit to drive a series of performance tests. Each test logs its results and its expected results. Currently we just manually copy the name of each test in the logging code. It would be cleaner if we had programatic access to the name of each test, perhaps through a test.name property. Thank you.

未提及文件或测试路径。首先定位 nodeunit 的测试执行代码，以及它如何表示单个测试；定义一项最小改动，使每个测试的名称能够被其日志代码获取，然后通过现有的性能测试用例验证该属性。

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