feat: conformance tests pass for first time

Change implementation to exponentially increase search space at each
level.
This commit is contained in:
nobody 2025-12-12 21:05:29 -08:00
commit 546d6deb69
Signed by: GrocerPublishAgent
GPG key ID: D460CD54A9E3AB86
13 changed files with 1852 additions and 102 deletions

View file

@ -0,0 +1,674 @@
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{
"name": "lseq-conformance-runner",
"version": "1.0.0",
"private": true,
"type": "module",
"scripts": {
"test": "tsx src/runner.ts"
},
"dependencies": {
"@peoplesgrocers/lseq": "file:../../../typescript",
"uvu": "^0.5.6"
},
"devDependencies": {
"@types/node": "^20.0.0",
"tsx": "^4.7.0",
"typescript": "^5.0.0"
}
}

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import { LSEQ } from "@peoplesgrocers/lseq";
import { test } from "uvu";
import * as assert from "uvu/assert";
import * as fs from "fs";
import * as path from "path";
interface Operation {
before?: number;
after?: number;
expected: string;
}
interface Scenario {
name: string;
description: string;
seed: number;
init: string[];
rng: number[];
operations: Operation[];
}
function createMockRandom(values: number[]): () => number {
let index = 0;
return () => {
if (index >= values.length) {
throw new Error(`Ran out of random values at index ${index}`);
}
return values[index++];
};
}
const testDataDir = path.join(import.meta.dirname!, "../../../genfiles");
const files = fs
.readdirSync(testDataDir)
.filter((f) => f.endsWith(".scenario.json"))
.sort();
for (const file of files) {
const filePath = path.join(testDataDir, file);
const scenario: Scenario = JSON.parse(fs.readFileSync(filePath, "utf-8"));
test(`${scenario.name}`, () => {
const mockRandom = createMockRandom(scenario.rng);
const lseq = new LSEQ(mockRandom);
const state: string[] = [...scenario.init];
for (let i = 0; i < scenario.operations.length; i++) {
const op = scenario.operations[i];
// Derive beforeKey and afterKey from the insertion point
// - `before: X` means insert before index X → beforeKey=state[X-1], afterKey=state[X]
// - `after: X` means insert after index X → beforeKey=state[X], afterKey=state[X+1]
let beforeKey: string | null = null;
let afterKey: string | null = null;
let insertIdx: number;
if (op.before !== undefined) {
// Insert before index X
const idx = op.before < 0 ? state.length + op.before : op.before;
beforeKey = idx > 0 ? state[idx - 1] : null;
afterKey = idx < state.length ? state[idx] : null;
insertIdx = idx;
} else if (op.after !== undefined) {
// Insert after index X
const idx = op.after < 0 ? state.length + op.after : op.after;
beforeKey = idx >= 0 && idx < state.length ? state[idx] : null;
afterKey = idx + 1 < state.length ? state[idx + 1] : null;
insertIdx = idx + 1;
} else {
// Neither specified - insert at end
beforeKey = state.length > 0 ? state[state.length - 1] : null;
afterKey = null;
insertIdx = state.length;
}
const result = lseq.alloc(beforeKey, afterKey);
assert.is(
result,
op.expected,
`op ${i}: alloc(${beforeKey}, ${afterKey})`
);
state.splice(insertIdx, 0, result);
}
});
}
test.run();

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{
"compilerOptions": {
"target": "ES2022",
"module": "ESNext",
"moduleResolution": "bundler",
"esModuleInterop": true,
"strict": true,
"skipLibCheck": true,
"resolveJsonModule": true
},
"include": ["src/**/*"]
}