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Draft: pretty-printer tests with randomly generated AST Expressions #1248

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Draft: pretty-printer tests with randomly generated AST Expressions #1248

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@xpyctumo xpyctumo commented Dec 24, 2024 •
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Issue

Towards #642

Checklist

  • I have updated CHANGELOG.md
  • I have documented my contribution in docs/ and made the build locally
  • I have added tests to demonstrate the contribution is correctly implemented: this usually includes both positive and negative tests, showing the happy path(s) and featuring intentionally broken cases
  • I have run all the tests locally and no test failure was reported
  • I have run the linter, formatter and spellchecker
  • I did not do unrelated and/or undiscussed refactorings

Plan

  • AstExpressionPrimary
    • AstMethodCall
    • AstFieldAccess
    • AstStaticCall
    • AstStructInstance
    • AstNumber
    • AstBoolean
    • AstId
    • AstNull
    • AstInitOf
    • AstString
  • AstLiteral
    • AstNumber
    • AstBoolean
    • AstNull
    • AstSimplifiedString
    • AstAddress
    • AstCell
    • AstSlice
    • AstCommentValue
    • AstStructValue
  • AstOpBinary
  • AstOpUnary
  • AstConditional

@xpyctumo xpyctumo self-assigned this Dec 24, 2024
@xpyctumo xpyctumo requested a review from a team as a code owner December 24, 2024 14:27
@anton-trunov anton-trunov marked this pull request as draft December 24, 2024 14:31
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anton-trunov commented Dec 24, 2024 •
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when I see something like this, I immediately think of adding shrinking (fast-check should support it)

(+0b100100110001001100110111100100000101101111000011101011010101101101011110010000001000101100100000011000111001001110101001111011111100001101111110011000101010010001100000100100011010000100110011001111001000111001011101000100011011100111001110 ? 0xf39c6286c40970dcb2a321a1c21e4549de1a2d60bcc7ff84622639b35024a7f || 0o3235042541620525012122214562100130425412434124566713521630100545344175751456215504064 - -0o7777777777777777777777777777777777777777777777777777777777777777777777777777777777743 : 8 - (16227299991510006730850008471880976967479204885141379564359356953639308462371 == 0o5735742350164242162734544666035326212173453606274734532135112142107426251434140545063)) ? 0b10111100010010010001011110101011101010001000111101110001100011100001101000001011001111111101110100100011001000001001001111011110100011001100011010100111110010110110010011110110010001101000100111000101011110110110110010100100010011010011 + 0b11001101101101011111001101010011101111110011111110101001101100111000110011110110011010111001101011001111001111110001100110000010001001101011100010111101000010100000010001011100101110010100100101100101101110110110111100111100110111000101011111011001100010 + 26 + (0x157e944ffa07c17e8b222faf8abfab932cd54c213784eca386a32755e232289a ? 0o2667602156054031504566507661155302000265110317032415711565650770337656725250250767327 << 0o5520154115374334170135502317743632312724505264461136361671447006177506075556352660004 : 0o6624600205764760715715350617562272506065501073701250447411343437104466044353352053407) : 0b1

even shrinking integer literals would already help a lot here

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xpyctumo commented Dec 25, 2024 •
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when I see something like this, I immediately think of adding shrinking (fast-check should support it)

(+0b100100110001001100110111100100000101101111000011101011010101101101011110010000001000101100100000011000111001001110101001111011111100001101111110011000101010010001100000100100011010000100110011001111001000111001011101000100011011100111001110 ? 0xf39c6286c40970dcb2a321a1c21e4549de1a2d60bcc7ff84622639b35024a7f || 0o3235042541620525012122214562100130425412434124566713521630100545344175751456215504064 - -0o7777777777777777777777777777777777777777777777777777777777777777777777777777777777743 : 8 - (16227299991510006730850008471880976967479204885141379564359356953639308462371 == 0o5735742350164242162734544666035326212173453606274734532135112142107426251434140545063)) ? 0b10111100010010010001011110101011101010001000111101110001100011100001101000001011001111111101110100100011001000001001001111011110100011001100011010100111110010110110010011110110010001101000100111000101011110110110110010100100010011010011 + 0b11001101101101011111001101010011101111110011111110101001101100111000110011110110011010111001101011001111001111110001100110000010001001101011100010111101000010100000010001011100101110010100100101100101101110110110111100111100110111000101011111011001100010 + 26 + (0x157e944ffa07c17e8b222faf8abfab932cd54c213784eca386a32755e232289a ? 0o2667602156054031504566507661155302000265110317032415711565650770337656725250250767327 << 0o5520154115374334170135502317743632312724505264461136361671447006177506075556352660004 : 0o6624600205764760715715350617562272506065501073701250447411343437104466044353352053407) : 0b1

even shrinking integer literals would already help a lot here

I'm thinking about that right now. It might become more user- friendly values

value: fc.bigInt({ min: -1_000_000_000n, max: 1_000_000_000n })

@xpyctumo xpyctumo force-pushed the fast-check branch 3 times, most recently from 80ca1e6 to 88786b8 Compare December 26, 2024 17:19
@anton-trunov anton-trunov marked this pull request as ready for review December 28, 2024 08:57
@anton-trunov anton-trunov added this to the v1.6.0 milestone Dec 28, 2024
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@xpyctumo I took the liberty to merge the new parser into your branch and pushed a few fixes for the expressions generator too. Looks like the new parser fixed the issue with duplicated unary operators!

@anton-trunov anton-trunov changed the title Draft: pretty-printer tests with random generated AST Expressions Draft: pretty-printer tests with randomly generated AST Expressions Dec 28, 2024
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Btw, these fuzzing-like tests should go into their own folder and only gets executed on a special request, separately from yarn tests.

@xpyctumo xpyctumo force-pushed the fast-check branch 2 times, most recently from f5d0f1f to ccdf98c Compare January 14, 2025 15:46
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