Ivan - Add Unit testing for MailTemplate [skip ci]

server/tests/models/MailTemplateTest.php

@@ -0,0 +1,27 @@
+<?php
+include_once 'tests/__lib__/Mock.php';
+include_once 'models/MailTemplate.php';
+
+class MailTemplateTest extends PHPUnit_Framework_TestCase {
+    public function testGetTemplateShouldReturnSpecifiedTemplate() {
+        $mailTemplate = MailTemplate::getTemplate(MailTemplate::USER_SIGNUP);
+        
+        $this->assertEquals(MailTemplate::USER_SIGNUP, $mailTemplate->type);
+    }
+
+    public function testCompilation() {
+        $mailTemplate = new MailTemplate();
+        $mailTemplate->setProperties([
+            'subject' => 'Welcoming to {{to}}',
+            'body' => 'Welcome, {{userName}} to our team'
+        ]);
+
+        $result = $mailTemplate->compile([
+            'to' => 'cersei@opensupports.com',
+            'userName' => 'Cersei Lannister',
+        ]);
+
+        $this->assertEquals($result['subject'], 'Welcoming to cersei@opensupports.com');
+        $this->assertEquals($result['body'], 'Welcome, Cersei Lannister to our team');
+    }
+}