How can I test Vuex store actions with Vue Test Utils?

How can I test Vuex store actions with Vue Test Utils?

To test Vuex store actions, you can use Vue Test Utils along with Jest. First, create a mock store.

Can you show me a code example for that?

Sure! Here's a simple example:

import { createStore } from 'vuex';
import { mount } from '@vue/test-utils';

const store = createStore({
  actions: {
    increment({ commit }) {
      commit('increment');
    }
  },
  mutations: {
    increment(state) {
      state.count++;
    }
  },
  state: {
    count: 0
  }
});

const wrapper = mount(MyComponent, { store });

wrapper.vm.$store.dispatch('increment');
expect(wrapper.vm.$store.state.count).toBe(1);

This tests the increment action.

What if I want to test a component that uses the store?

You can mount the component with the store as shown in the example. Just ensure your component accesses the store correctly.

Are there any best practices for testing Vuex?

Yes! Keep your tests isolated, use mocks for dependencies, and test both actions and mutations separately.