feat(rewrite): introspect container[key] in failure messages - #14815

Draft

RonnyPfannschmidt wants to merge 15 commits into

pytest-dev:mainfrom

RonnyPfannschmidt:ronny/rewrite-visit-subscript

Commits on Jul 31, 2026

test(rewrite): systematic coverage matrix for assertion rewriting
RonnyPfannschmidt
committed
ff0f7c0

Commits on Aug 10, 2026

test(rewrite): collapse the harness onto one exec helper

RonnyPfannschmidt
and
claude
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a3b7edc
fix(rewrite): prevent walrus operator double evaluation in assertions

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15a4f40
Add changelog fragment for #14445

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4555206
test(rewrite): add xfail tests for remaining walrus edge cases

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1fddeee
fix(rewrite): avoid double evaluation of walrus in BoolOp condition

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776cc1c
fix(rewrite): assign walrus comparators to temps in chained comparisons

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a124758
fix(rewrite): show correct walrus values in BoolOp explanations

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adab91c
scripts: add assert-rewrite dump and diff tools

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0d62826
refactor(rewrite): minimal snapshots in BoolOp for walrus conflicts

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fd72de6
fix(rewrite): freeze operands a later walrus would clobber
RonnyPfannschmidt
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6c9f83e
fix(rewrite): freeze walrus and starred operands too
RonnyPfannschmidt
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22dc8ac
refactor(rewrite): drop the walrus snapshot visit_Compare no longer needs

RonnyPfannschmidt
and
claude
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5af71a7
refactor(rewrite): drop the unreachable Load guard in visit_Attribute

RonnyPfannschmidt
and
claude
committed
6cd2885
feat(rewrite): introspect container[key] in failure messages
RonnyPfannschmidt
committed
ae65813