Factory function to mount component

component.test.js

let wrapper;
const factory = (computed = {}) => {
    return shallowMount(Component, {
        propsData: {},
        mocks: {},
        stubs: {},
        methods: {},
        computed,
    });
};

beforeEach(() => {
    wrapper = factory();
});

...

test('changing computed property should be updated', () => {
    wrapper = factory({ myProperty: () => 'test' });
    expect(wrapper.vm.myProperty).toBe('test');
});