text: const assert = require('assert');
  
  const add = require('../src/add');
  
  describe('基础方法测试', () => {
    describe('#add()', () => {
      it('12 + 10 = 22', () => {
        assert.equal(add(12, 10), 22);
      })
  
      it('-10 + 10 = 0', () => {
        assert.equal(add(-10, 10), 0);
      })
    })
  })