test(parse-meta): assert PARSE_META matches dynamic rebuild from authoringMetaV2

[thedavidmeister]

Closes #17

Adds testParseMetaMatchesDynamicBuild to ERC4626Words.parseMeta.t.sol.

The test calls LibERC4626SubParser.authoringMetaV2(), decodes the result to AuthoringMetaV2[], passes it to LibGenParseMeta.buildParseMetaV2 with the committed PARSE_META_BUILD_DEPTH, and asserts the output equals the committed PARSE_META constant.

This ensures that drift between the hand-maintained parse meta binary and the source authoring metadata is caught at test time.

Summary by CodeRabbit

• Tests
  • Added a new check that verifies the generated parsing metadata matches the statically defined version exactly.
  • Expanded coverage around metadata decoding and rebuild behavior for ERC4626 word parsing.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 0c5e4af6-871e-4870-aa95-52464e318375

📥 Commits

Reviewing files that changed from the base of the PR and between 7d1eb1c and 99b4092.

📒 Files selected for processing (1)

• test/src/concrete/ERC4626Words.parseMeta.t.sol

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Walkthrough

A new test function was added to a Solidity test file to verify that dynamically rebuilding PARSE_META from authoringMetaV2() produces bytes identical to the statically-defined PARSE_META constant, along with supporting imports.

Changes

PARSE_META drift-guard test

Layer / File(s)	Summary
Add drift-guard test and imports test/src/concrete/ERC4626Words.parseMeta.t.sol	Adds imports for AuthoringMetaV2 and LibGenParseMeta, and introduces testParseMetaMatchesDynamicBuild, which decodes LibERC4626SubParser.authoringMetaV2(), rebuilds parse meta via LibGenParseMeta.buildParseMetaV2, and asserts it equals the committed PARSE_META constant.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related issues

• Two-phase regen (authoring-meta prelude THEN BuildPointers) is order-dependent and only the second phase's drift is git-checked; PARSE_META  #17: Proposes adding a forge test that recomputes parse meta and described-by hash from authoringMetaV2() and asserts equality with committed constants, which matches this PR's added drift-guard test.
• No test asserts authoringMetaV2 stays consistent with generated PARSE_META / DESCRIBED_BY_META_HASH #126: Requests the same drift-guard idea of verifying authoringMetaV2() matches generated PARSE_META by rebuilding and comparing bytes.

Possibly related PRs

• rainlanguage/rain.erc4626.words#234: Also modifies imports in the same test file, changing them to relative paths.
• rainlanguage/rain.erc4626.words#243: Refactors LibERC4626SubParser to import AuthoringMetaV2 from ISubParserV4, the same type used in this PR's new test.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 2026-06-24-issue-17-parse-meta-consistency

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