Add count test

Author: Didier Franc

src/__test__/__snapshots__/index.test.js.snap

@@ -1,5 +1,9 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`actions triggered and state updated 1`] = `"0"`;
+
+exports[`actions triggered and state updated 2`] = `"1"`;
+
 exports[`render provider with its children 1`] = `
 <h1>
   Children

src/__test__/index.test.js

@@ -1,22 +1,25 @@
+/* global store */
 import React from 'react'
 import renderer from 'react-test-renderer'
 
 import createStore from '../'
 
-const config = {
-  initialState: {
-    count: 0,
-  },
-  actionsCreators: {
-    increment: ({ count }) => ({ count: count + 1 }),
-  },
-}
-
 global.console = { error: jest.fn() }
 
-test('store initialization', () => {
-  const store = createStore(config)
+beforeEach(() => {
+  const config = {
+    initialState: {
+      count: 0,
+    },
+    actionsCreators: {
+      increment: ({ count }) => ({ count: count + 1 }),
+    },
+  }
+
+  global.store = createStore(config)
+})
 
+test('store initialization', () => {
   expect(store.Provider).toBeDefined()
   expect(store.connect).toBeDefined()
   expect(store.actions).toBeDefined()
@@ -25,8 +28,7 @@ test('store initialization', () => {
 })
 
 test('render provider with its children', () => {
-  const { Provider } = createStore(config)
-
+  const { Provider } = store
   const App = () => (
     <Provider>
       <h1>Children</h1>
@@ -38,7 +40,24 @@ test('render provider with its children', () => {
 })
 
 test('call console.error if an action is called before Provider initialization', () => {
-  const { actions } = createStore(config)
+  const { actions } = store
   actions.increment()
   expect(console.error).toBeCalledWith('<Provider /> is not initialized yet')
 })
+
+test('actions triggered and state updated', () => {
+  const { Provider, connect, actions } = store
+
+  const Count = connect(({ count }) => ({ count }))(({ count }) => count)
+
+  const App = () => (
+    <Provider>
+      <Count />
+    </Provider>
+  )
+  const tree = renderer.create(<App />)
+  expect(tree.toJSON()).toMatchSnapshot()
+
+  actions.increment()
+  expect(tree.toJSON()).toMatchSnapshot()
+})