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-Now we move to the next step, which involves partitioning the
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-categories that we just identified into choices. And these choices are the
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-interesting cases for each category. So the interesting subdomains for each one
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-of these categories. So once more, lets look at that using our
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-example, the split program. So lets start by considering length. What are
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-the interesting cases when we think about the length of a string?
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-Some of those we already saw, one interesting case is the case
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-of the length of size zero, so a string with no characters.
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-Another interesting case is the one in which the length of the
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-string is size minus one, so the string is just one character
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-short of the size at which it will be cut by the
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-split program. And we can continue along these lines, so we will select
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-size, size plus one, size twice the value of size minus one,
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-and so on and so forth. But even without listing all of
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-those, I'm sure you get the idea of what it means to
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-identify this interesting cases. Let's see
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-the movements that are considering the content.
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-So without the interesting cases when we think about the content
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-of the string. So possible interesting case is the string that
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-contains only spaces. Why? Well maybe because a split is written
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-spaces in a special way. Similarly a string that contains special
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-characters, like non printable characters,
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-like tabulation characters, new line might
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-also be an interesting case, something that we want to test. Also
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-in this case we could continue and go on and on.
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-So basically here you just want to put all the interesting cases
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-that you can think of when you consider the content
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-of a string. Now let's move to the value as the
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-next category. So the value of the input size. And
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-here we might want to consider a size zero, special case, a
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-normal situation, like size greater than zero, another special case,
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-size less than zero or maxint. And these are, if you
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-remember, I accepted the cases that we consider when we look
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-at this example, before. And also here we can continue and
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-go on and on. So, at the end of the
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-step, what we have is a set of interesting cases
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-for each one of the categories, and now we can
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-start to think about how we want to combine them.