Ticket #50159: SimplePieCacheTester.php

<?php
/*
        Plugin Name: SimplePieCacheTester
        Description: To test simplepipe cache 
        Author: arena
        Version: 0
*/
class SimplePieCacheTester
{
        const feed_0 = 'http://wordpress.org/development/feed/';
        const feed_1 = 'https://www.theverge.com/rss/index.xml';

        function __construct() 
        {
                add_action( 'tool_box', array( $this, 'tool_box' ) );
        }

        public function tool_box() 
        {
                $this->out = array();

// tests cannot be chained due to mysql ...

//              $this->test01();
//              $this->test02();
//              $this->test03();
                $this->test04();

                echo '<pre>' . implode('<br />', $this->out ) . '</pre>';
        }

        public function test01() 
        {
                $this->out[] = '';
                $this->out[] = '**************** TEST 01 ***********************';
                $this->test = ' * 01 * ';

                $this->feed = self::feed_0;

                $this->out[] = $this->test . ' ** using fetch_feed with no filter and one feed as string : ' . $this->feed;

                $this->init_test();

                $feed = fetch_feed( $this->feed );

                $this->end_test( $feed );

                $this->out[] = '**************** END TEST 01 ***********************';
                $this->out[] = '';
        }

        public function test02() 
        {
                $this->out[] = '';
                $this->out[] = '**************** TEST 02 ***********************';
                $this->test = ' * 02 * ';

                $this->feed = self::feed_0;
                $this->lifetime = $this->get_lifetime();
                $this->calls = 0;
                add_filter( 'wp_feed_cache_transient_lifetime',  array( $this, 'wp_feed_cache_transient_lifetime' ), 10, 2  );

                $this->out[] = $this->test . ' ** using fetch_feed with filter (lifetime = ' . $this->lifetime . ') and one feed as string : ' . $this->feed;

                $this->init_test();

                $feed = fetch_feed( $this->feed );

                $this->end_test( $feed );

                remove_filter( 'wp_feed_cache_transient_lifetime',  array( $this, 'wp_feed_cache_transient_lifetime' ) );

                $this->out[] = '**************** END TEST 02 ***********************';
                $this->out[] = '';
        }

        public function test03() 
        {
                $this->out[] = '';
                $this->out[] = '**************** TEST 03 ***********************';
                $this->test = ' * 03 * ';

                $this->feed = array( self::feed_0 );
                $this->lifetime = $this->get_lifetime();
                $this->calls = 0;
                add_filter( 'wp_feed_cache_transient_lifetime',  array( $this, 'wp_feed_cache_transient_lifetime' ), 10, 2  );

                $this->out[] = $this->test . ' ** using fetch_feed with filter (lifetime = ' . $this->lifetime . ') and one feed as array : ' . json_encode( $this->feed );

                $this->init_test();

                $feed = fetch_feed( $this->feed );

                $this->end_test( $feed );

                remove_filter( 'wp_feed_cache_transient_lifetime',  array( $this, 'wp_feed_cache_transient_lifetime' ) );

                $this->out[] = '**************** END TEST 03 ***********************';
                $this->out[] = '';
        }

        public function test04() 
        {
                $this->out[] = '';
                $this->out[] = '**************** TEST 04 ***********************';
                $this->test = ' * 04 * ';

                $this->feed = array( self::feed_0, self::feed_1 );
                $this->lifetime = $this->get_lifetime();
                $this->calls = 0;
                add_filter( 'wp_feed_cache_transient_lifetime',  array( $this, 'wp_feed_cache_transient_lifetime' ), 10, 2  );

                $this->out[] = $this->test . ' ** using fetch_feed with filter (lifetime = ' . $this->lifetime . ') and two feeds as array : ' . json_encode( $this->feed );

                $this->init_test();

                $feed = fetch_feed( $this->feed );

                $this->end_test( $feed );

                remove_filter( 'wp_feed_cache_transient_lifetime',  array( $this, 'wp_feed_cache_transient_lifetime' ) );

                $this->out[] = '**************** END TEST 04 ***********************';
                $this->out[] = '';
        }

        public function wp_feed_cache_transient_lifetime( $lifetime, $url ) 
        {
                $this->calls++;
                $test = $this->test . '+++++ filter(' . $this->calls . ')';
                $this->out[] = $test;
                $u = ( is_array( $url ) ) ? json_encode( $url ) : $url;
                $this->out[] = $test . ' beg >> lifetime >> ' . $lifetime;
                $this->out[] = $test . ' beg >> 2nd arg  >> ' . $u;

                if ( $url == $this->feed )
                {
                        $this->out[] = $test . ' ++ filtered : should be 1st call (2nd func arg string or array)';
                        $lifetime = $this->lifetime;
                }
                elseif ( is_array( $this->feed ) )
                {
                        $feedmd5 = array_map( 'md5', $this->feed );
                        if ( in_array( $url, $feedmd5 ) )
                        {
                                $lifetime = $this->lifetime;
                                if ( count( $this->feed ) == 1 )
                                        $this->out[] = $test . ' ++ filtered : should be 2nd call and 2nd arg is one of array of one';
                                else
                                        $this->out[] = $test . ' ++ filtered : should be 2nd call and 2nd arg is one of array of many';
                        }
                }
                elseif ( $url == md5( $this->feed ) )
                {
                        $this->out[] = $test . ' ++ filtered : should be 2nd call and one feed as string';
                        $lifetime = $this->lifetime;
                }

                $this->out[] = $test . ' end >> lifetime >> ' . $lifetime;
                return $lifetime;
        }

        public function init_test() 
        {
                global $wpdb;
                $wpdb->query( "DELETE FROM $wpdb->options where option_name like '_transient%feed%'" );
                $this->out[] = $this->test . ' rows in wp_options where option_name like "_transient%feed%" : ' . $wpdb->get_var( "SELECT COUNT(*) as count FROM  $wpdb->options where option_name like '_transient%feed%'" );
        }

        public function end_test( $feed ) 
        {
                global $wpdb;
                if ( is_wp_error( $feed ) )
                {
                        $this->out[] = $this->test . $feed->get_error_message();
                }
                else
                {
                        $i = 0;
                        do
                        {
                                $link = $feed->get_link( $i );
                                if ( $link ) $this->out[] = $this->test . ' >>> feed->get_link >>> ' . $link;
                                $i++;
                        } while( $link );
                }
                $rows = $wpdb->get_results( "SELECT * FROM  $wpdb->options where option_name like '_transient%feed%'" );
                $this->out[] = $this->test . ' rows in wp_options where option_name like "_transient%feed%" : ' . count($rows);

                if ( $rows )
                {
                        $this->out[] .= $this->get_list( $rows );
                }
        }
  
        public function get_list( $rows ) 
        {
                $t = '<table>';
                $cols = array( 'option_id', 'option_name', 'option_value' );
                foreach( $rows as $row )
                {
                        $t .= '<tr>';
                        foreach( $cols as $col ) 
                        {
                                $v = $row->$col;
                                if ( strlen( $v ) > 100 ) $v = substr( $v, 0, 99 );
                                $t .= "<td>$v</td>";
                        }
                        $t .= '</tr>';
                }
                $t .= '</table>';
                return $this->test . '<br />' . $t;
        }

        public function get_lifetime() 
        {
                return 2000000000 - time();
        }
}
new SimplePieCacheTester();