add test

test/vuex-defaultstorage-asyncfilter.spec.ts

@@ -0,0 +1,51 @@
+/**
+ * Created by championswimmer on 23/07/17.
+ */
+
+import { assert, expect, should } from 'chai'
+import Vue from 'vue'
+import { Store } from 'vuex'
+import Vuex from 'vuex'
+import VuexPersistence from '..'
+
+Vue.use(Vuex)
+const vuexPersist = new VuexPersistence()
+vuexPersist.filter = async (mutation) => (mutation.type === 'dogBark')
+console.log((vuexPersist.storage as Storage).getItem('vuex') as string)
+const store = new Store<any>({
+  state: {
+    dog: {
+      barks: 0
+    },
+    cat: {
+      mews: 0
+    }
+  },
+  mutations: {
+    dogBark(state) {
+      state.dog.barks++
+    },
+    catMew(state) {
+      state.cat.mews++
+    }
+  },
+  plugins: [vuexPersist.plugin]
+})
+const getSavedStore = () => JSON.parse((vuexPersist.storage as Storage).getItem('vuex') as string)
+
+describe('Storage: Default Storage, Test: reducer, async-filter; Strict Mode: OFF', () => {
+  it('should persist reduced state', async () => {
+    store.commit('dogBark')
+    await ptimeout() // wait for store.commit
+    expect(getSavedStore().dog.barks).to.equal(1)
+    store.commit('catMew')
+    //noinspection TsLint
+    expect(getSavedStore().cat.mews).to.equal(0)
+  })
+})
+
+function ptimeout(ms = 10){
+  return new Promise((resolve, reject) => {
+    setTimeout(() => resolve(), ms)
+  })
+}