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Once we have identified Independently Testable Features, the next step is to

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identify the Relevant Inputs for each one of these features. And there are

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many ways to do that. So, what we're going to do, instead of

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looking at them all, is that we're just going to focus on two different

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ways of doing it. And they are fairly general ways. So, they

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are applicable to a number of situations. And in addition, what I will

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do, I will point you to other sources in which you can

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look at different ways of doing this in the class notes. The problem

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of identifying relevant inputs for some Software or some feature

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of it is called Test Data Selection and can be expressed

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as followed. Let's consider our software as usual we have

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our Input Domain, which is the set of inputs for all

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the software. And again as usual, we have our Output

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Domain, which is the set of corresponding outlets for these inputs.

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So the question here is, how can we select a meaningful

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set of inputs in my domain? And of course corresponding outputs

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because we know that test cases are an input, plus an

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expected output. So how can we select interesting inputs for our

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software? So a set of inputs that, after we run them

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on the software, if the software behaves correctly, we'll have enough

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confidence that the software is correctly implemented. So one possible idea

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is, hey, why don't we just test them all? We just

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do exhaustive testing. We do all the inputs, nowadays we have

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powerful machines, we have a lot of computational power in the cloud.

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Why not just doing it? So to answer that

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question, what I'm going to do? I'm going to use another quiz.