More sophisticated array shrink algorithm #15
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ohbarye
commented
Apr 7, 2024
| @@ -103,7 +103,7 @@ def printable_string(**kwargs) | |||
| end | |||
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| def symbol(**kwargs) | |||
| array(one_of(*SYMBOL_SAFE_CHARS), **kwargs).map(SYMBOL_MAPPER, SYMBOL_UNMAPPER) | |||
| array(one_of(*SYMBOL_SAFE_CHARS), empty: false, **kwargs).map(SYMBOL_MAPPER, SYMBOL_UNMAPPER) | |||
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Symbol basically should not be empty.
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Change
This pull request polishes Array's shrink algorithm so that it can cover more cases.
I didn't choose a strategy to produce all combinations of items because it could be too large and takes so long time to get done. Instead, I chose a strategy to shrink each item of an array to reduce cases.
I referred https://github.com/dubzzz/fast-check/blob/9711e54a99784ee9acd321d675ceea558825e442/packages/fast-check/src/arbitrary/_internals/ArrayArbitrary.ts#L259-L325.