const assert = require('assert');
const { commandExists, ensureYarnAvailable } = require('../src/package-manager');

assert.strictEqual(commandExists('yarn'), true, '当前环境未安装 Yarn');
assert.doesNotThrow(() => ensureYarnAvailable(() => true));
assert.throws(() => ensureYarnAvailable(() => false), /未检测到 Yarn/);