Remove subkey (reduxjs#945)

* Add test for custom store key to connect

* Remove subkey

Author: theJian

src/components/Provider.js

@@ -19,8 +19,8 @@ function warnAboutReceivingStore() {
   )
 }
 
-export function createProvider(storeKey = 'store', subKey) {
-    const subscriptionKey = subKey || `${storeKey}Subscription`
+export function createProvider(storeKey = 'store') {
+    const subscriptionKey = `${storeKey}Subscription`
 
     class Provider extends Component {
         getChildContext() {

src/connect/selectorFactory.js

@@ -1,5 +1,5 @@
 import verifySubselectors from './verifySubselectors'
-  
+
 export function impureFinalPropsSelectorFactory(
   mapStateToProps,
   mapDispatchToProps,
@@ -64,7 +64,7 @@ export function pureFinalPropsSelectorFactory(
     const nextStateProps = mapStateToProps(state, ownProps)
     const statePropsChanged = !areStatePropsEqual(nextStateProps, stateProps)
     stateProps = nextStateProps
-    
+
     if (statePropsChanged)
       mergedProps = mergeProps(stateProps, dispatchProps, ownProps)
 

test/components/connect.spec.js

@@ -6,7 +6,7 @@ import PropTypes from 'prop-types'
 import ReactDOM from 'react-dom'
 import TestRenderer from 'react-test-renderer'
 import { createStore } from 'redux'
-import { connect } from '../../src/index'
+import { connect, createProvider } from '../../src/index'
 
 describe('React', () => {
   describe('connect', () => {
@@ -2324,5 +2324,27 @@ describe('React', () => {
       expect(mapStateToPropsC).toHaveBeenCalledTimes(2)
       expect(mapStateToPropsD).toHaveBeenCalledTimes(2)
     })
+
+    it('should receive the store in the context using a custom store key', () => {
+      const store = createStore(() => ({}))
+      const CustomProvider = createProvider('customStoreKey')
+      const connectOptions = { storeKey: 'customStoreKey' }
+
+      @connect(undefined, undefined, undefined, connectOptions)
+      class Container extends Component {
+        render() {
+          return <Passthrough {...this.props} />
+        }
+      }
+
+      const testRenderer = TestRenderer.create(
+        <CustomProvider store={store}>
+          <Container />
+        </CustomProvider>
+      )
+
+      const container = testRenderer.root.findByType(Container)
+      expect(container.instance.store).toBe(store)
+    })
   })
 })