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Add vitest + 43 unit tests for tree.ts

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Setup:
- vitest 2.x devDep; pnpm test / pnpm test:watch scripts.
- vite.config.ts test: block (node env, src/**/*.test.ts) via vitest/config.

Coverage in tree.test.ts:
- newLeaf / newSplit (defaults + provided props).
- replaceById (root/nested/no-match, immutability + sibling reuse).
- splitLeaf (orientation, inheritance, no-op on missing id, nested).
- closeLeaf (root -> null, sibling collapse, nested removal, no-op).
- findLeaf / leafCount / walkLeaves (order).
- changeDistro pins the invariant that it MUST swap the leaf id
  ({#key} remounts XtermPane → kills+respawns PTY).
- changeLabel / toggleBroadcast pin the inverse invariant: id MUST
  remain stable (metadata-only mutations).
- All 5 presets: shape, distro propagation, fresh ids per call.
- serialize/deserialize roundtrip + invalid-input rejection.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
megaproxy 2026-05-22 13:28:02 +01:00
parent 547b47ded4
commit b1412287be
5 changed files with 668 additions and 1 deletions
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pnpm-lock.yaml generated
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