// tests/lib/main-merge-gate.test.mjs
// Step 12 (plan-v2) — pin that commands/trekexecute.md Phase 8
// names the main-merge-gate lifecycle event, the decline + recovery
// surface, and the always-on gate prose.

import { test } from 'node:test';
import { strict as assert } from 'node:assert';
import { readFileSync } from 'node:fs';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';

const HERE = dirname(fileURLToPath(import.meta.url));
const ROOT = join(HERE, '..', '..');
const CMD = readFileSync(join(ROOT, 'commands/trekexecute.md'), 'utf-8');

test('Phase 8 names the main-merge-gate lifecycle event', () => {
  assert.ok(
    CMD.includes('main-merge-gate'),
    'commands/trekexecute.md should emit `main-merge-gate` from Phase 8',
  );
});

test('Phase 8 documents both approved + declined event branches', () => {
  assert.ok(CMD.includes('main-merge-approved'), 'should emit main-merge-approved on confirm');
  assert.ok(CMD.includes('main-merge-declined'), 'should emit main-merge-declined on decline');
});

test('Phase 8 documents the --resume recovery surface for the main-merge gate', () => {
  assert.ok(
    CMD.includes('--resume re-enters'),
    'Phase 8 should document that `--resume re-enters at the gate` after a decline',
  );
});

test('Phase 8 main-merge gate is always-on (regardless of gates_mode)', () => {
  // Main-merge gate is the one boundary that pauses on every run; the prose
  // must say so explicitly so the contract survives copy-edit drift.
  assert.ok(
    /always[\s\S]{0,200}gates_mode|gates_mode[\s\S]{0,200}always|always pauses on every run/.test(CMD),
    'Phase 8 should state main-merge gate is always-on, regardless of gates_mode',
  );
});