refactor info functions test

pageinfo() test no longer required, unit test committed elsewhere and
verified against both previous and updated versions of pageinfo() fn.

basicinfo() and mediainfo() tests separated each into their own test
file.

_test/tests/inc/common_mediainfo.test.php

+<?php
+
+class common_basicinfo_test extends DokuWikiTest {
+ 
+    function setup(){
+        parent::setup();
+
+        global $USERINFO; 
+        $USERINFO = array(
+           'pass' => '179ad45c6ce2cb97cf1029e212046e81',
+           'name' => 'Arthur Dent',
+           'mail' => 'arthur@example.com',
+           'grps' => array ('admin','user'),
+        );
+        $_SERVER['REMOTE_USER'] = 'testuser';
+        $_SERVER['REMOTE_ADDR'] = '1.2.3.4';
+    }
+    
+    function _get_info() {
+        global $USERINFO;
+        $info = array (
+          'isadmin' => true,
+          'ismanager' => true,
+          'userinfo' => $USERINFO,
+          'perm' => 255,
+          'namespace' => false,
+          'ismobile' => false,
+          'client' => 'testuser',
+        );
+      
+        return $info;
+    }
+    
+    /**
+     * We're interested in the extra keys for $INFO when its a media request
+     */
+    function test_mediainfo(){
+        global $NS, $IMG;
+        $NS = '';
+        $IMG = 'testimage.png';
+         
+        $info = $this->_get_info();
+        $info['image'] = 'testimage.png';
+        
+        $this->assertEquals(mediainfo(),$info);
+    }
+}
+
+//Setup VIM: ex: et ts=4 :