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msd-core/tests
Tom Boucher f09e7ed08c fix(#4137): existsSync-guard the Homebrew Cellar rewrite in normalizeNodePath (#4375)
* test(#4137): keg-only Homebrew Cellar path falls back to raw execPath

Regression tests for the Homebrew branch of normalizeNodePath: the rewrite
to <prefix>/bin/node must be existsSync-guarded like the mise/volta
branches, falling through to the raw execPath when the keg-only formula
was never linked into <prefix>/bin. Also makes the existing #3181/#2185
Cellar assertions hermetic by injecting existsSync stubs (granting
existence to exactly the one candidate each asserts) so they no longer
depend on the runner machine's real /usr/local/bin/node.

* fix(#4137): existsSync-guard the Homebrew Cellar rewrite in normalizeNodePath

The Homebrew branch of normalizeNodePath returned <prefix>/bin/node
unconditionally — the only one of five runtime branches that never probed
its rewrite candidate. On a keg-only or versioned Homebrew install
(node@24 never brew-linked) that path does not exist, so every managed
hook command baked by resolveNodeRunner/buildBakedNodeToken/
buildNodeRunnerChainToken failed at invocation with exit 127, /bin/sh:
<prefix>/bin/node: No such file or directory.

Guard the rewrite with the already-injected existsSync exactly like the
mise and volta branches: when <prefix>/bin/node exists (linked formula)
the rewrite is byte-identical to today; when it does not, fall through to
the raw execPath — a working keg path instead of an immediately broken
one. Also drops two now-unused constants from the regression tests.

* test(#4137): make the #977 non-fnm Cellar assertions hermetic too

The Bug #977 folded block's two 'still maps to stable symlink' assertions
called normalizeNodePath without an existsSync stub, silently depending
on the runner machine's real /usr/local/bin/node (present on the Linux
bench image, absent for /opt/homebrew). With the #4137 guard these become
environment-dependent; grant each exactly the one candidate it asserts.

* chore(#4137): add changeset fragment

* chore(#4137): backfill changeset pr number

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Co-authored-by: sim <sim@local>
2026-09-06 16:04:21 -04:00
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