You should also see a new view for the Test Data Comparator.

你也应该看到Test Data Comparator的新视图。

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But also notice that the test Data Comparator now shows expected and actual values for our tests.

但是也注意到Test Data Comparator现在为我们的测试展示了期望的、真实的值。

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Lower-bounded wildcards show up when you want to specify a callback object, such as a comparator, or a data structure into which you are going to place a value.

当您希望指定一个回调对象(例如一个比较器)或存放某个值的数据结构，可以使用下限通配符。

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