setData with an empty object doesn't get set

[Haroenv]

Subject of the issue

If you call wrapper.setData({ someKey: {} }), it doesn't set the someKey to {}

Steps to reproduce

this test doesn't pass

const wrapper = mount({
  data() {
    return {
      someKey: { someValue: true },
    };
  },
  render(h) {
    return h('span');
  },
});

expect(wrapper.vm.$data).toEqual({ someKey: { someValue: true } });

wrapper.setData({ someKey: {} });

expect(wrapper.vm.$data).toEqual({ someKey: {} });

Expected behaviour

This test passes

Actual behaviour

The test doesn't pass, it still has the previous

Possible Solution

In here: https://github.com/vuejs/vue-test-utils/blob/dev/packages/test-utils/src/recursively-set-data.js I think it might make sense to see if the object has keys at all, if it doesn't have keys, you could set the value.

[Ivan-dev-RED]

Why this issue closed??
I have the same trouble and this solution is bullshit

[lmiller1990]

Does #1705 not fix? That was the intention: Haroenv@cda6e4b

If you want to fork this repo and add a minimal repro, we can take a look.