text: var expect = require('chai').expect;
  var sqrt = require('../src/sqrt');
  
  describe('sqrt', function() {
  
    it('should calculate the correct square root', function() {
      expect(sqrt(4)).to.equal(2);
      expect(sqrt(7)).to.equal(2);
      expect(sqrt(9)).to.equal(3);
      expect(sqrt(15)).to.equal(3);
    });
  
    it('should calculate the correct square root with logn', function() {
      var sqrtl = sqrt.logn;
      expect(sqrtl(4)).to.equal(2);
      expect(sqrtl(7)).to.equal(2);
      expect(sqrtl(9)).to.equal(3);
      expect(sqrtl(15)).to.equal(3);
    });
  
  });
  