Skill の選択と結果を検証する

import test from 'node:test';
import assert from 'node:assert/strict';
import { mkdtempSync, writeFileSync, readFileSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { resolve, join, dirname } from 'node:path';
import { spawnSync } from 'node:child_process';

const script = resolve('.agents/skills/todo-summary/scripts/count-tasks.mjs');
const tasks = [
  { id: 'a', title: 'Read', completed: true },
  { id: 'b', title: 'Build', completed: false },
  { id: 'c', title: 'Read', completed: true },
];
function run(input, verify, missing = false) {
  const folder = mkdtempSync(join(tmpdir(), 'todo-skill-test-'));
  const file = join(folder, 'input.json');
  try {
    if (!missing) writeFileSync(file, input, 'utf8');
    const before = missing ? null : readFileSync(file);
    const result = spawnSync(process.execPath, [script, file], { encoding: 'utf8' });
    assert.equal(result.error, undefined);
    verify(result);
    if (!missing) assert.deepEqual(readFileSync(file), before, 'Input changed');
  } finally {
    assert.equal(dirname(resolve(folder)), resolve(tmpdir()));
    rmSync(folder, { recursive: true });
  }
}
function fails(input, pattern) {
  run(input, result => {
    assert.equal(result.status, 1);
    assert.equal(result.stdout, '');
    assert.match(result.stderr, pattern);
  });
}
test('keeps repeated titles as three records', () => run(JSON.stringify(tasks), result => {
  assert.equal(result.status, 0);
  assert.equal(result.stderr, '');
  assert.deepEqual(JSON.parse(result.stdout), { total: 3, active: 1, completed: 2 });
}));
test('accepts an empty array', () => run('[]', result => {
  assert.equal(result.status, 0);
  assert.deepEqual(JSON.parse(result.stdout), { total: 0, active: 0, completed: 0 });
}));
test('rejects duplicate IDs', () => fails(JSON.stringify([tasks[0], tasks[0]]), /Duplicate id/));
test('rejects string completed', () => fails(JSON.stringify([{ ...tasks[0], completed: 'true' }]), /Invalid task/));
test('rejects a non-array', () => fails('{}', /Input must be an array/));
test('rejects malformed JSON', () => fails('{', /\S/));
test('reports a missing file', () => run('', result => {
  assert.equal(result.status, 1);
  assert.equal(result.stdout, '');
  assert.match(result.stderr, /ENOENT/);
}, true));
test('requires an input argument', () => {
  const result = spawnSync(process.execPath, [script], { encoding: 'utf8' });
  assert.equal(result.status, 1);
  assert.equal(result.stdout, '');
  assert.match(result.stderr, /Usage:/);
});

node --test skill.test.mjs

total: new Set(tasks.map(task => task.title)).size

policy:
  allow_implicit_invocation: false

# Skill acceptance record

Date and surface: <observed>
Node / Codex versions: <observed>
Model and effort, if shown: <observed or unavailable>
Skill path and revision: <exact local path and saved version>
Program tests: <command, exit, passes, failures>
Behavior case: <explicit / matching / outside-scope / missing-resource>
Request: <exact text>
Selected skill: <observed / not selected / unconfirmed>
Resources read and command executed: <evidence or not run>
Actual result and preserved input: <evidence>
Failure and one change: <description>
Fresh-task retest: <result or not run>
Remaining checks: <not run>