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Harden reconciliation coverage across keyed, unkeyed, mixed, composite and deep trees #79

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RtlZeroMemory merged 2 commits into from
Feb 18, 2026
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Harden reconciliation coverage across keyed, unkeyed, mixed, composite and deep trees #79

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test(runtime): harden reconciliation coverage across keyed/unkeyed/mi…
RtlZeroMemory Feb 18, 2026
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test(runtime): harden reconciliation edge cases
RtlZeroMemory Feb 18, 2026
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13 changes: 13 additions & 0 deletions docs/dev/testing.md
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Expand Up @@ -12,6 +12,19 @@ The repo uses:
- golden tests for drawlists/layout/routing where byte-level stability matters
- fuzz-lite tests for binary parsers (bounded, never-throw)

## Reconciliation Hardening Matrix

Reconciliation edge-cases are covered by dedicated runtime suites:

- `packages/core/src/runtime/__tests__/reconcile.keyed.test.ts`
- `packages/core/src/runtime/__tests__/reconcile.unkeyed.test.ts`
- `packages/core/src/runtime/__tests__/reconcile.mixed.test.ts`
- `packages/core/src/runtime/__tests__/reconcile.composite.test.ts`
- `packages/core/src/runtime/__tests__/reconcile.deep.test.ts`

These suites lock deterministic behavior for keyed reorder/insert/remove, unkeyed grow/shrink,
mixed keyed+unkeyed slots, `defineWidget` hook/state persistence, and deep-tree reconciliation.

Related CI gates:

- [Perf Regressions](./perf-regressions.md)
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