A test framework agnostic mock for nodemailer allowing you to test code that sends mail via nodemailer without actually sending mail.
Obviously you'll need nodemailer installed in your app that you're trying to test. This will use that version to prevent any oddities with two copies of nodemailer being present.
vartest=require('tap').test;varmockmailer=require('mockmailer');varnodemailer=require('nodemailer');test('do not send mail',function(t){vartransport=nodemailer.createTransport('SMTP',{options: 'go here'});varsendOptions={to: 'test@test.com'};vartriggered=false;mockmailer(function(err,message){t.ok(triggered,'Triggered original callback')t.ok(!err,'Did not return an error');t.deepEqual(message.options,sendOptions,'Returned correct options');t.equal(message.messageId,'noid','mockmailer ID returned');t.equal(message.message,'Caught by mockmailer','mockmailer message returned');t.end();});transport.sendMail(sendOptions,function(){triggered=true;});});test('simulate a failure',function(t){vartransport=nodemailer.createTransport('STMP',{service: 'immafail'});vartriggered=false;mockmailer.setFail(true);mockmailer(function(err,message){t.ok(err,'Returned an error');t.ok(triggered,'Triggered original callback');t.equal(err.message,'failed by user request','Message is from mockmailer');t.end();mockmailer.setFail(false);});transport.sendMail({},function(err){if(err){triggered=true;}});});npm i -D mockmailer
/**
* Supply a callback to be invoked when mail is sent that resolves or fails your test
* @method mockmailer
* @async
* @param {function} registeredCallback The callback to invoke when `sendMail` is called
* @returns {object} undefined
*/
/**
* Sets nodemailer to either fail or not when `sendMail` is called
* @method setFail
* @param {boolean} mode Should nodemailer "fail" sending mail
*/
mockmailer is ©2014 Scripto, LLC. Available for use under the MIT License.