Überprüfung reaktiver Array-Mutationen mittels von Vue Test Utils ausgegebener Events

import { mount } from '@vue/test-utils';
import { describe, it, expect } from 'vitest';
import TaskList from './TaskList.vue';
 
describe('TaskList Array Mutation Auditing', () => {
  it('tracks ordered array insertions without mutating original state', async () => {
    const wrapper = mount(TaskList, { props: { initialItems: ['alpha', 'beta'] } });
    await wrapper.find('button.add-item').trigger('click');
    const emitted = wrapper.emitted('update:items');
    expect(emitted).toHaveLength(1);
    expect(emitted[0][0]).toEqual(['alpha', 'beta', 'gamma']);
    expect(Object.isFrozen(emitted[0][0])).toBe(false);
  });
});