Add redis testcase

cacheItem.js

@@ -1,7 +1,7 @@
 const CacheDriver = require('./cacheDriver')
 
 class CacheItem {
-  constructor(name = '', data = '', timeout = 0) {
+  constructor(name = '', data, timeout = 0) {
     this.name = name
     this.data = data
     this.timeout = timeout

test/cacheItem.spec.js

@@ -12,6 +12,7 @@ describe('CacheItem', () => {
     it('expect return true if cache is empty', () => {
       const item = new CacheItem()
       expect(item.invalid()).to.be.true
+      expect(item.data).to.be.undefined
     })
   })
 

test/redisCacheDriver.spec.js

@@ -0,0 +1,49 @@
+const chai = require('chai')
+const chaiAsPromised = require("chai-as-promised")
+chai.use(chaiAsPromised)
+const expect = chai.expect
+
+const RedisCacheDriver = require('../redisCacheDriver')
+
+const data = { data: 'test' }
+
+function Timeout (secs) {
+  return new Promise((resolve) => {
+    setTimeout(resolve, secs * 1000)
+  })
+}
+
+function testRedisGet (keyName, data, done) {
+  const promise = RedisCacheDriver.get(keyName, data)
+    .then(d => d.data)
+
+  const chain = expect(promise)
+    .to.eventually.deep.equal(data)
+
+  if (done) {
+    chain.notify(done)
+  }
+}
+
+describe('RedisCacheDriver', () => {
+  describe('#get', function () {
+    this.timeout(2000)
+
+    it('expect get key from redis', (done) => {
+      RedisCacheDriver.set('key1', data).then(() => {
+        testRedisGet('key1', data, done)
+      }).catch(done)
+    })
+
+    it('expect get key from redis with timeout', (done) => {
+      RedisCacheDriver.set('key2', data, 1).then(() => {
+
+        testRedisGet('key2', data)
+
+        return Timeout(1)
+      }).then(() => {
+        testRedisGet('key2', undefined, done)
+      }).catch(done)
+    })
+  })
+})