Renamed classes for full PSR-2 compliance, some cleanup

tst/Vizhash16x16Test.php

@@ -0,0 +1,40 @@
+<?php
+
+use PrivateBin\Persistence\ServerSalt;
+use PrivateBin\Vizhash16x16;
+
+class Vizhash16x16Test extends PHPUnit_Framework_TestCase
+{
+    private $_file;
+
+    private $_path;
+
+    public function setUp()
+    {
+        /* Setup Routine */
+        $this->_path = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'privatebin_data';
+        if (!is_dir($this->_path)) {
+            mkdir($this->_path);
+        }
+        $this->_file = $this->_path . DIRECTORY_SEPARATOR . 'vizhash.png';
+        ServerSalt::setPath($this->_path);
+    }
+
+    public function tearDown()
+    {
+        /* Tear Down Routine */
+        chmod($this->_path, 0700);
+        Helper::rmDir($this->_path);
+    }
+
+    public function testVizhashGeneratesUniquePngsPerIp()
+    {
+        $vz = new Vizhash16x16();
+        $pngdata = $vz->generate('127.0.0.1');
+        file_put_contents($this->_file, $pngdata);
+        $finfo = new finfo(FILEINFO_MIME_TYPE);
+        $this->assertEquals('image/png', $finfo->file($this->_file));
+        $this->assertNotEquals($pngdata, $vz->generate('2001:1620:2057:dead:beef::cafe:babe'));
+        $this->assertEquals($pngdata, $vz->generate('127.0.0.1'));
+    }
+}