[#5] Num laws for Size #32
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| additionAssotiavity :: Property | ||
| additionAssotiavity = hedgehog $ do | ||
| x <- forAll genSize |
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Suggestion: Reduce duplication
Suggested change
| x <- forAll genSize | |
| Combine with test/Test/Slist/Size.hs:75:5 |
| x <- forAll genSize | ||
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| fromInteger 1 * x === x | ||
| x * fromInteger 1 === x |
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Warning: Redundant fromInteger
Suggested change
| x * fromInteger 1 === x | |
| x * 1 === x |
vrom911
approved these changes
May 3, 2020
Comment on lines
+72
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+78
| (Size x) * (Size y) | ||
| | x == 0 || y == 0 = 0 | ||
| | otherwise = | ||
| let result = x * y in | ||
| if x == result `div` y | ||
| then Size (x * y) | ||
| else Infinity -- multiplication overflow |
| @@ -1 +1 @@ | |||
| resolver: nightly-2019-11-08 | |||
| resolver: nightly-2020-05-01 | |||
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Part of #5
Checks
Numinstance laws forSize. I've also added some simple check on integer overflow.