Confused with Vuex commit/dispatch in simple VueJS test - vue.js

Question

From the book:
To invoke a mutation handler, you need to call store.commit with its type: store.commit('increment')
Mutations must always be synchronous.
From the book:
Actions commit mutations ( can be asynchronous )
Actions are triggered with the store.dispatch method: store.dispatch('increment')
So it's action -> mutation -> new state most of the time.
So what's confusing me, is the very simple example, whereby I'm trying to show the asynchronous result of an object getTest
See this pen
Why can't Vue see that I'm not calling a mutation, but an action when the component loads?

Answer 1

What is this "book" you are talking about? I'm asking because you are using a mix of new Vuex 2.* and old, Vuex 1.* syntax, which is not working anymore in 2.*, so I assume you are learning in part from outdated resources.
(Sidenote: Why are you using Vue 1? Vue2.* has been out for over 10 months now...)
Your action and mutation definitions are correct, but there's no vuex: {} key in components anymore in Vuex 2.*
Also, you are trying to dispatch an action 'INCREMENT', but oyour store only has a mutation by that name, no action. So you have to use commit rather than dispatch.
Instead, you directly add computed props and method to your instance, or use the map*helpers provided by Vuex:
var vm = new Vue({
el: '[vue=app]',
data: {
welcome: 'Testing Vuex'
},
store: myStore,
created() {
this.$store.dispatch(FETCH_TEST_STATE)
},
computed: {
...Vuex.mapState( {
count: state => state.count,
getTest: state => state.testState
}),
}
methods: {
increment({dispatch}) {
this.$store.commit('INCREMENT', 1)
}
}
})
the action you call from created doesn't work because async/await was acting up on codepen
the commit called from this action didn't set any state.
Fixing all of this, here's your working example:
https://codepen.io/LinusBorg/pen/NvRYYy?editors=1010