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-rw-r--r--includes/parser/Parser_DiffTest.php87
1 files changed, 87 insertions, 0 deletions
diff --git a/includes/parser/Parser_DiffTest.php b/includes/parser/Parser_DiffTest.php
new file mode 100644
index 00000000..be3702cf
--- /dev/null
+++ b/includes/parser/Parser_DiffTest.php
@@ -0,0 +1,87 @@
+<?php
+
+/**
+ * @ingroup Parser
+ */
+class Parser_DiffTest
+{
+ var $parsers, $conf;
+
+ var $dfUniqPrefix;
+
+ function __construct( $conf ) {
+ if ( !isset( $conf['parsers'] ) ) {
+ throw new MWException( __METHOD__ . ': no parsers specified' );
+ }
+ $this->conf = $conf;
+ $this->dtUniqPrefix = "\x7fUNIQ" . Parser::getRandomString();
+ }
+
+ function init() {
+ if ( !is_null( $this->parsers ) ) {
+ return;
+ }
+
+ global $wgHooks;
+ static $doneHook = false;
+ if ( !$doneHook ) {
+ $doneHook = true;
+ $wgHooks['ParserClearState'][] = array( $this, 'onClearState' );
+ }
+
+ foreach ( $this->conf['parsers'] as $i => $parserConf ) {
+ if ( !is_array( $parserConf ) ) {
+ $class = $parserConf;
+ $parserConf = array( 'class' => $parserConf );
+ } else {
+ $class = $parserConf['class'];
+ }
+ $this->parsers[$i] = new $class( $parserConf );
+ }
+ }
+
+ function __call( $name, $args ) {
+ $this->init();
+ $results = array();
+ $mismatch = false;
+ $lastResult = null;
+ $first = true;
+ foreach ( $this->parsers as $i => $parser ) {
+ $currentResult = call_user_func_array( array( &$this->parsers[$i], $name ), $args );
+ if ( $first ) {
+ $first = false;
+ } else {
+ if ( is_object( $lastResult ) ) {
+ if ( $lastResult != $currentResult ) {
+ $mismatch = true;
+ }
+ } else {
+ if ( $lastResult !== $currentResult ) {
+ $mismatch = true;
+ }
+ }
+ }
+ $results[$i] = $currentResult;
+ $lastResult = $currentResult;
+ }
+ if ( $mismatch ) {
+ throw new MWException( "Parser_DiffTest: results mismatch on call to $name\n" .
+ 'Arguments: ' . var_export( $args, true ) . "\n" .
+ 'Results: ' . var_export( $results, true ) . "\n" );
+ }
+ return $lastResult;
+ }
+
+ function setFunctionHook( $id, $callback, $flags = 0 ) {
+ $this->init();
+ foreach ( $this->parsers as $i => $parser ) {
+ $parser->setFunctionHook( $id, $callback, $flags );
+ }
+ }
+
+ function onClearState( &$parser ) {
+ // hack marker prefixes to get identical output
+ $parser->mUniqPrefix = $this->dtUniqPrefix;
+ return true;
+ }
+}