text: describe("BMICalculator", function() {
    var calculator;
    var person;
  
    beforeEach(function() {
      person = new Person({weight: 90, height: 186});
      calculator = new BMICalculator();
    });
  
    it("calculates BMI for a person using metric method", function() {
      calculator.body_bmi(person, 'metric');
      expect(person.bmiValue).toEqual(26.01);
    });
  });
  