我可以在一个'describe‘中有多个'it’并使用一个beforeEach吗

describe('Calculator', () => {
  let calculator;

  beforeEach(() => {
    calculator = new Calculator();
  });

  it('should add two numbers correctly', () => {
    const result = calculator.add(2, 3);
    expect(result).toBe(5);
  });

  it('should subtract two numbers correctly', () => {
    const result = calculator.subtract(5, 3);
    expect(result).toBe(2);
  });
});