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593550b1e3
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tests/pi_star_code: 32 KATs for Python-AST kernel
Backfills minimal-only coverage on arborist/pi_star/code.py (123
lines, 2026-05-10 zero-coverage sweep). KATs mirror the docstring's
equivalence classes: whitespace/indent/comment/quote-style/numeric-
formatting (1_000 ≡ 1000) invariance vs identifier/operator/arg-
order distinctness. Pins critical isinstance(bool) ordering (bool
subclasses int, must dispatch first to avoid encoding True as 1).
Pins lexical _fields sort (cross-Python-version determinism). Pins
position-field exclusion (lineno/col_offset never appear in
canonical output). Plus projective contract: re-canonicalizing the
S-expression output raises PiStarError (not valid Python).
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2026-05-10 15:54:49 -04:00 |
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