text: import { calculateBiorhythms } from './calculations';
  
  it('calculates the physical biorhythm', () => {
    const { physical } = calculateBiorhythms('1995-01-01', '2021-05-03');
    expect(physical).toBeCloseTo(0.9791);
  });
  
  it('calculates the emotional biorhythm', () => {
    const { emotional } = calculateBiorhythms('1995-01-01', '2021-05-03');
    expect(emotional).toBeCloseTo(-0.2225);
  });
  
  it('calculates the intellectual biorhythm', () => {
    const { intellectual } = calculateBiorhythms('1995-01-01', '2021-05-03');
    expect(intellectual).toBeCloseTo(0.0951);
  });
  