text: import { assert } from 'chai';
  
  import { duplicateZeros } from './index';
  
  const testcase = [
    [[1,0,2,3,0,4,5,0], [1,0,0,2,3,0,0,4]],
    [[1,2,3], [1,2,3]],
    [[0,0,0,0,0,0,0], [0,0,0,0,0,0,0]]
  ];
  
  describe('duplicateZeros', function() {
    it ('always true', () => {
      assert.equal(true, true);
    });
  
    testcase.map(t => {
      const [param, result] = t;
      return it(param.toString(), () => {
        assert.deepEqual(duplicateZeros(param), result);
      });
    });
  });
  