includes/Parser_DiffTest.php

   1 <?php
   2
   3 class Parser_DiffTest
   4 {
   5         var $parsers, $conf;
   6
   7         var $dfUniqPrefix;
   8
   9         function __construct( $conf ) {
  10                 if ( !isset( $conf['parsers'] ) ) {
  11                         throw new MWException( __METHOD__ . ': no parsers specified' );
  12                 }
  13                 $this->conf = $conf;
  14                 $this->dtUniqPrefix = "\x7fUNIQ" . Parser::getRandomString();
  15         }
  16
  17         function init() {
  18                 if ( !is_null( $this->parsers ) ) {
  19                         return;
  20                 }
  21
  22                 global $wgHooks;
  23                 static $doneHook = false;
  24                 if ( !$doneHook ) {
  25                         $doneHook = true;
  26                         $wgHooks['ParserClearState'][] = array( $this, 'onClearState' );
  27                 }
  28
  29                 foreach ( $this->conf['parsers'] as $i => $parserConf ) {
  30                         if ( !is_array( $parserConf ) ) {
  31                                 $class = $parserConf;
  32                                 $parserConf = array( 'class' => $parserConf );
  33                         } else {
  34                                 $class = $parserConf['class'];
  35                         }
  36                         $this->parsers[$i] = new $class( $parserConf );
  37                 }
  38         }
  39
  40         function __call( $name, $args ) {
  41                 $this->init();
  42                 $results = array();
  43                 $mismatch = false;
  44                 $lastResult = null;
  45                 $first = true;
  46                 foreach ( $this->parsers as $i => $parser ) {
  47                         $currentResult = call_user_func_array( array( &$this->parsers[$i], $name ), $args );
  48                         if ( $first ) {
  49                                 $first = false;
  50                         } else {
  51                                 if ( is_object( $lastResult ) ) {
  52                                         if ( $lastResult != $currentResult ) {
  53                                                 $mismatch = true;
  54                                         }
  55                                 } else {
  56                                         if ( $lastResult !== $currentResult ) {
  57                                                 $mismatch = true;
  58                                         }
  59                                 }
  60                         }
  61                         $results[$i] = $currentResult;
  62                         $lastResult = $currentResult;
  63                 }
  64                 if ( $mismatch ) {
  65                         throw new MWException( "Parser_DiffTest: results mismatch on call to $name\n" .
  66                                 'Arguments: ' . var_export( $args, true ) . "\n" .
  67                                 'Results: ' . var_export( $results, true ) . "\n" );
  68                 }
  69                 return $lastResult;
  70         }
  71
  72         function setFunctionHook( $id, $callback, $flags = 0 ) {
  73                 $this->init();
  74                 foreach  ( $this->parsers as $i => $parser ) {
  75                         $parser->setFunctionHook( $id, $callback, $flags );
  76                 }
  77         }
  78
  79         function onClearState( &$parser ) {
  80                 // hack marker prefixes to get identical output
  81                 $parser->mUniqPrefix = $this->dtUniqPrefix;
  82                 return true;
  83         }
  84 }
  85