Testing Reactive Counter Logic with Vitest in Vue

import { ref } from 'vue';
import { describe, it, expect } from 'vitest';
 
function useCounter(initial = 0) {
  const count = ref(initial);
  const increment = () => { count.value++; };
  return { count, increment };
}
 
describe('useCounter', () => {
  it('increments the count value by one', () => {
    const { count, increment } = useCounter(5);
    increment();
    expect(count.value).toBe(6);
  });
});