Create test.header_functions.php

Creates a regression test for the parsePriority function, as suggested by GreezyBacon https://github.com/osTicket/osTicket-1.8/pull/348#issuecomment-31326865

setup/test/tests/test.header_functions.php

+<?php
+require_once "class.test.php";
+define('INCLUDE_DIR', realpath(dirname(__file__).'/../../../include').'/');
+define('PEAR_DIR', INCLUDE_DIR.'/pear/');
+require_once INCLUDE_DIR."class.mailparse.php";
+
+abstract class Priorities {
+	const HIGH_PRIORITY = 1;
+	const NORMAL_PRIORITY = 2;
+	const LOW_PRIORITY = 3;
+	const NO_PRIORITY = 0;
+}
+
+class TestHeaderFunctions extends Test {
+    var $name = "Email Header Function Algorithm Regression Tests.";
+    
+    function testMailParsePriority() {
+    	$func_class_method = array('Mail_Parse','parsePriority');
+    	$strlen_base = strlen($this->h());
+
+    	foreach ( array (
+    			'X-Priority: isNAN' => Priorities::NO_PRIORITY, // input => output
+    			'X-Priority: 1' => Priorities::LOW_PRIORITY,
+    			'X-Priority: 2' => Priorities::LOW_PRIORITY,
+    			'X-Priority: 3' => Priorities::NORMAL_PRIORITY,
+    			'X-Priority: 4' => Priorities::NORMAL_PRIORITY,
+    			'X-Priority: 5' => Priorities::HIGH_PRIORITY,
+    			'X-Priority: 6' => Priorities::HIGH_PRIORITY,
+    			'No priority set' => Priorities::NO_PRIORITY,
+    			'Priority: normal' => Priorities::NORMAL_PRIORITY,
+    			'xyz-priority: high' => Priorities::HIGH_PRIORITY,
+    			'Priority: high' => Priorities::HIGH_PRIORITY,
+    			'priority: low' => Priorities::LOW_PRIORITY,
+    			'x-priority: 1000' => Priorities::LOW_PRIORITY, // only matches first 1, not the full 1000
+    			'priority: 3' => Priorities::NORMAL_PRIORITY,
+    			'IPM-Importance: low' => Priorities::LOW_PRIORITY,
+    			'My-Importance: URGENT' => Priorities::HIGH_PRIORITY,
+    			'Urgency: High' => Priorities::NO_PRIORITY, //urgency doesn't match.. maybe it should?
+    			'X-Importance: 5' => Priorities::HIGH_PRIORITY,
+    			'' => Priorities::NO_PRIORITY
+    	) as $priority => $response ) {
+    		$this->assert(is_int($response), "Setup fail, function should only return Integer values");
+    		//get header
+    		$header = $this->h($priority);
+    		
+    		if(strlen($priority)){
+    			$this->assert((strlen($header) > $strlen_base), "Setup fail, function h not returning correct string length");
+    		}
+    		if (! (call_user_func_array ($func_class_method , array($header) ) == $response)){
+    			//TODO: make line number dynamic
+    			$this->fail ( "class.mailparse.php", 351, "Algorithm mistake: $priority should return $response!" );
+    		}else{
+    			$this->pass();
+    		}
+    	}
+  
+    }
+    
+    /**
+     * Generate some header text to test with. Allows insertion of a known header variable
+     * 
+     * @param string $setPriority
+     * @return string
+     */
+    function h($setPriority = "") {
+    	return <<<HEADER
+Delivered-To: clonemeagain@gmail.com
+Received: by 10.69.18.42 with SMTP id gj10csp88238pbd;
+Fri, 20 Dec 2013 10:08:25 -0800 (PST)
+X-Received: by 10.224.13.80 with SMTP id b16mr16256982qaa.73.1387562904239;
+Fri, 20 Dec 2013 10:08:24 -0800 (PST)
+Return-Path: <noreply@github.com>
+Received: from github-smtp2a-ext-cp1-prd.iad.github.net (github-smtp2-ext5.iad.github.net. [192.30.252.196])
+by mx.google.com with ESMTPS id k3si6568083qao.74.2013.12.20.10.08.23
+for <clonemeagain@gmail.com>
+(version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128);
+Fri, 20 Dec 2013 10:08:23 -0800 (PST)
+Received-SPF: pass (google.com: domain of noreply@github.com designates 192.30.252.196 as permitted sender) client-ip=192.30.252.196;
+Authentication-Results: mx.google.com;
+spf=pass (google.com: domain of noreply@github.com designates 192.30.252.196 as permitted sender) smtp.mail=noreply@github.com
+Date: Fri, 20 Dec 2013 10:08:23 -0800
+From: Jared Hancock <notifications@github.com>
+Reply-To: "osTicket/osTicket-1.8" <reply+i-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH@reply.github.com>
+To: "osTicket/osTicket-1.8" <osTicket-1.8@noreply.github.com>
+Cc: clonemeagain <clonemeagain@gmail.com>
+Message-ID: <osTicket/osTicket-1.8/pull/336/issue_event/82864993@github.com>
+In-Reply-To: <osTicket/osTicket-1.8/pull/336@github.com>
+References: <osTicket/osTicket-1.8/pull/336@github.com>
+Subject: Re: [osTicket-1.8] Landing page inline image correction (#336)
+Mime-Version: 1.0
+Content-Type: multipart/alternative;
+boundary="--==_mimepart_52b4879729712_d621217cfc567e3";
+charset=UTF-8
+Content-Transfer-Encoding: 7bit
+Precedence: list
+X-GitHub-Recipient: clonemeagain
+X-GitHub-Reason: author
+List-ID: osTicket/osTicket-1.8 <osTicket-1.8.osTicket.github.com>
+List-Archive: https://github.com/osTicket/osTicket-1.8
+List-Post: <mailto:reply+i-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH@reply.github.com>
+List-Unsubscribe: <mailto:unsub+i-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH@reply.github.com>,
+<https://github.com/notifications/unsubscribe/BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISH-BUNCHORANDOMGIBBERIBBERISHBUNCHORANDOMGIBBERIBBERISHBUNCHORANDOMGIBBERIBBERISH>
+X-Auto-Response-Suppress: All
+X-GitHub-Recipient-Address: clonemeagain@gmail.com
+$setPriority
+    	
+HEADER;
+    }
+
+}
+return 'TestHeaderFunctions';
+?>