mirror of
https://github.com/Permissionless-Software-Foundation/psf-memo.git
synced 2026-09-21 16:52:01 -07:00
Chris Troutner
6a8cf6653e
Deduplicate the postHeights query iteration into a shared generator, extract shared pagination parsing/enrichment, and extract the idempotent create-if-missing write pattern. Reduces CRAP for the changed post-height code to <=6 and removes duplicated parse/attach logic across the post list use cases. Add property tests covering the postHeight key round-trip and ordering invariants for both the DB and indexer, exposed via a separate 'property' command. By refactorer.
49 lines
1.6 KiB
JavaScript
49 lines
1.6 KiB
JavaScript
/*
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Property tests for the indexer's postHeightKey encoding.
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The indexer writes the postHeights secondary index, and the DB reads it
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back by the same key scheme. These properties pin the encoding invariants:
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fixed-width zero-padded height, numeric-order preservation, and a stable
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key format shared with the DB.
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*/
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import test from 'node:test'
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import { seededRandom, forAll, intGen, txidGen } from './harness.js'
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import { postHeightKey } from '../../src/use-cases/action-types/helpers.js'
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const rng = seededRandom(20260826)
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test('postHeightKey is fixed-width and encodes the height and txid', async () => {
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const heightGen = intGen(rng, 0, 999999999999)
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await forAll(
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(i) => ({ height: heightGen(), txid: txidGen(rng) }),
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({ height, txid }) => {
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const key = postHeightKey(height, txid)
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const [padded, txidPart] = key.split(':')
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return padded.length === 12 &&
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Number.parseInt(padded, 10) === height &&
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txidPart === txid
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},
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{ label: 'postHeightKey fixed-width encoding' }
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)
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})
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test('postHeightKey preserves numeric height order lexicographically', async () => {
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const heightGen = intGen(rng, 0, 9000000)
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await forAll(
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(i) => {
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const a = heightGen()
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const b = heightGen()
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return { a: Math.min(a, b), b: Math.max(a, b), txidA: txidGen(rng), txidB: txidGen(rng) }
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},
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({ a, b, txidA, txidB }) => {
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if (a === b) return postHeightKey(a, txidA) === postHeightKey(a, txidB)
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return postHeightKey(a, txidA) < postHeightKey(b, txidB)
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},
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{ label: 'postHeightKey ordering' }
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)
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})
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