Enhance disable feature (#5)

app/keep-alive.js

@@ -0,0 +1,7 @@
+const keepAlive = () => {
+  setInterval(() => {}, 60000)
+}
+
+module.exports = {
+  keepAlive
+}

app/messaging/index.js

@@ -1,6 +1,7 @@
 const { MessageReceiver } = require('ffc-messaging')
 const config = require('../config')
 const processFileMessage = require('./process-file-message')
+const { keepAlive } = require('../keep-alive')
 let messageReceiver
 
 const start = async () => {
@@ -12,6 +13,7 @@ const start = async () => {
     console.info('Ready to transfer file')
   } else {
     console.info('File transfers are disabled in this environment')
+    keepAlive()
   }
 }
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ffc-pay-file-receiver",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "Transfer files from DAX",
   "homepage": "https://github.com/DEFRA/ffc-pay-file-receiver",
   "main": "app/index.js",

test/unit/keep-alive.test.js

@@ -0,0 +1,12 @@
+jest.useFakeTimers()
+
+const setIntervalSpy = jest.spyOn(global, 'setInterval')
+
+const { keepAlive } = require('../../app/keep-alive')
+
+describe('keep alive', () => {
+  test('should call setInterval', () => {
+    keepAlive()
+    expect(setIntervalSpy).toHaveBeenCalled()
+  })
+})

test/unit/messaging/index.test.js

@@ -16,6 +16,9 @@ jest.mock('ffc-messaging', () => {
 
 jest.mock('../../../app/messaging/process-file-message')
 
+jest.mock('../../../app/keep-alive')
+const { keepAlive: mockKeepAlive } = require('../../../app/keep-alive')
+
 const config = require('../../../app/config')
 
 const { start, stop } = require('../../../app/messaging')
@@ -48,6 +51,12 @@ describe('messaging start', () => {
     await start()
     expect(mockSubscribe).toHaveBeenCalledTimes(0)
   })
+
+  test('calls keep alive if service disabled', async () => {
+    config.enabled = false
+    await start()
+    expect(mockKeepAlive).toHaveBeenCalledTimes(1)
+  })
 })
 
 describe('messaging stop', () => {