import { describe, it } from 'node:test';
import assert from 'node:assert/strict';
import { workers, assign } from 'moroutine';
import { identity } from './fixtures/worker-handle.ts';

describe('assign()', () => {
  it('returns a new task with worker set', () => {
    const run = workers(1);
    try {
      const task = identity(5);
      const assigned = assign(run.workers[0], task);
      assert.notStrictEqual(assigned, task);
      assert.equal(assigned.id, task.id);
      assert.deepEqual(assigned.args, task.args);
      assert.notEqual(assigned.uid, task.uid);
      assert.equal(assigned.worker, run.workers[0]);
    } finally {
      run[Symbol.dispose]();
    }
  });

  it('does not modify the original task', () => {
    const run = workers(1);
    try {
      const task = identity(5);
      assign(run.workers[0], task);
      assert.equal(task.worker, undefined);
    } finally {
      run[Symbol.dispose]();
    }
  });
});