make_ascii_uppercase/lowercase harnesses #368
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tautschnig
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May 30, 2025
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| for (i, &item) in s.as_bytes().iter().enumerate() { | ||
| if item >= b'a' && item <= b'z' { | ||
| assert_eq!(s_uppercase[i], item - 32); | ||
| } else { | ||
| assert_eq!(s_uppercase[i], item); | ||
| } | ||
| } |
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Couldn't this be expressed as a post-condition (ensures) on make_ascii_uppercase?
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@AlexLB99 Kani supports Quantifiers now: https://model-checking.github.io/kani/reference/experimental/quantifiers.html. I strongly suggest trying this feature for the case.
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Towards solving #19
These are harnesses for functions make_ascii_uppercase() and make_ascii_lowercase(). They check that only the correct letters are modified (and that those that do need to be modified become the correct uppercase/lowercase character).
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