refactor(session): improved session drivers handling and exposing session manager

Session manager has been exposed via IOC container to be extended and session drivers are now
handled in better way

Author: thetutlage

providers/SessionProvider.js

@@ -11,11 +11,13 @@ const ServiceProvider = require('adonis-fold').ServiceProvider
 class SessionProvider extends ServiceProvider {
 
   * register () {
+    const Session = require('../src/Session')
     this.app.singleton('Adonis/Src/Session', function (app) {
       const Config = app.use('Adonis/Src/Config')
-      const Session = require('../src/Session')
       return new Session(Config)
     })
+
+    this.app.manager('Adonis/Src/Session', Session)
   }
 }
 

src/Session/index.js

@@ -16,10 +16,6 @@ const SessionManager = require('./SessionManager')
  */
 class Session {
 
-  static drivers () {
-    return {}
-  }
-
   /**
    * @description extend method for ioc to extend
    * session provider
@@ -30,6 +26,7 @@ class Session {
    * @public
    */
   static extend (key, value) {
+    this.drivers = this.drivers || {}
     this.drivers[key] = value
   }
 

test/unit/sessions.spec.js

@@ -44,10 +44,6 @@ describe('Session', function  () {
       expect(session.driver instanceof Redis).to.equal(true)
     })
 
-    it('should return list of extended session drivers', function * () {
-      expect(Session.drivers()).to.be.an('object')
-    })
-
     it('should make an instance of pre existing drivers using make method', function * () {
       let Config = {}
       Config.get = function () {