From c37f6fdedbad942a4d0424bb5cecbc7f751fd1f9 Mon Sep 17 00:00:00 2001
From: unknown <widesun91@gmail.com>
Date: Thu, 7 May 2020 07:54:04 +0900
Subject: [PATCH 1/2] #16: fixes mailer and test

---
 services/mailer.js      | 32 +++++++++++++++++++++++++++++
 services/mailer.test.js | 45 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 services/mailer.js
 create mode 100644 services/mailer.test.js

diff --git a/services/mailer.js b/services/mailer.js
new file mode 100644
index 00000000..ffcdd344
--- /dev/null
+++ b/services/mailer.js
@@ -0,0 +1,32 @@
+const mailgun = require('mailgun-js');
+const logger = require('../lib/log')(__filename)
+require('dotenv').config()
+
+const mg = mailgun({apiKey: process.env.MAILGUN_API_KEY, domain: process.env.MAILGUN_DOMAIN});
+
+const mgModule = {}
+
+mgModule.sendConfirmationEmail = (receiver, token) => {    
+    const link = `https://learndatabases.dev/emailConfirmation/${token}`
+    const data = {
+        from: 'admin@learndatabases.dev',
+        to: receiver,
+        subject: 'Congratulations!',
+        text: 'Welcome to C0D3',
+        html: `
+        <h1> Confirm your Email </h1>
+        <p>
+        <a href="${link}">Click Here</a>
+        </p>
+        <p> Or visit this link: <a href="${link}">${link}</a></p>
+        `
+    };
+    return mg.messages().send(data).then((returnedData) => {
+        logger.info('Confirmation Email successfully sent', returnedData)
+    }).catch((err) => {
+        logger.error('Confirmation Email Error:',err)
+        return err
+    })      
+}
+
+module.exports = mgModule
\ No newline at end of file
diff --git a/services/mailer.test.js b/services/mailer.test.js
new file mode 100644
index 00000000..756f3a37
--- /dev/null
+++ b/services/mailer.test.js
@@ -0,0 +1,45 @@
+jest.mock('../lib/log')
+const logGen = require('../lib/log')
+const logger = {
+    info: jest.fn(),
+    error: jest.fn()
+}
+logGen.mockReturnValue(logger)
+
+jest.mock('mailgun-js')
+const mailgun = require('mailgun-js');
+const messages = {
+    send: jest.fn().mockImplementation((data) => {
+        if (data.to) return Promise.resolve('hello')
+        return Promise.reject('rejected')
+    })
+}
+mailgun.mockImplementation(() => {
+    return {
+        messages: () => {
+            return messages
+        }
+    }
+})
+const email = require('./mailer');
+
+describe('Test mailgun', ()=>{
+    beforeEach(() => {
+        jest.clearAllMocks()
+    })
+
+    it('should test if mocksend and mailgun is called', async () => {
+        await email.sendConfirmationEmail('paul@github.com', 'token123')
+        expect(messages.send).toHaveBeenCalledTimes(1)
+        expect(messages.send.mock.calls[0][0]).toMatchSnapshot()
+        expect(logger.info).toHaveBeenCalledTimes(1)
+        expect(logger.info.mock.calls[0][0]).toEqual('Confirmation Email successfully sent')
+    })
+
+    it('should call logger.error when function is called with invalid argument', async () => {
+        await email.sendConfirmationEmail(null, null)
+        expect(logger.error).toHaveBeenCalledTimes(1)
+        expect(logger.error.mock.calls[0][0]).toEqual('Confirmation Email Error:')
+    })
+
+})

From 932ea20ce39a9018cb044e8a9b50209f9f6e76f9 Mon Sep 17 00:00:00 2001
From: unknown <widesun@gmail.com>
Date: Thu, 7 May 2020 09:57:16 +0900
Subject: [PATCH 2/2] #16: fixes mailer test

---
 services/mailer.test.js | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/services/mailer.test.js b/services/mailer.test.js
index 756f3a37..de7964eb 100644
--- a/services/mailer.test.js
+++ b/services/mailer.test.js
@@ -8,12 +8,7 @@ logGen.mockReturnValue(logger)
 
 jest.mock('mailgun-js')
 const mailgun = require('mailgun-js');
-const messages = {
-    send: jest.fn().mockImplementation((data) => {
-        if (data.to) return Promise.resolve('hello')
-        return Promise.reject('rejected')
-    })
-}
+const messages = {}
 mailgun.mockImplementation(() => {
     return {
         messages: () => {
@@ -21,6 +16,7 @@ mailgun.mockImplementation(() => {
         }
     }
 })
+
 const email = require('./mailer');
 
 describe('Test mailgun', ()=>{
@@ -29,6 +25,7 @@ describe('Test mailgun', ()=>{
     })
 
     it('should test if mocksend and mailgun is called', async () => {
+        messages.send = jest.fn().mockReturnValue(Promise.resolve('hello'))
         await email.sendConfirmationEmail('paul@github.com', 'token123')
         expect(messages.send).toHaveBeenCalledTimes(1)
         expect(messages.send.mock.calls[0][0]).toMatchSnapshot()
@@ -37,6 +34,7 @@ describe('Test mailgun', ()=>{
     })
 
     it('should call logger.error when function is called with invalid argument', async () => {
+        messages.send = jest.fn().mockReturnValue(Promise.reject('rejected'))
         await email.sendConfirmationEmail(null, null)
         expect(logger.error).toHaveBeenCalledTimes(1)
         expect(logger.error.mock.calls[0][0]).toEqual('Confirmation Email Error:')