testHelpers.inc

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<?php
class TestRecorder {
        var $parent;
        var $term;

        function __construct( $parent ) {
                $this->parent = $parent;
                $this->term = $parent->term;
        }

        function start() {
                $this->total = 0;
                $this->success = 0;
        }

        function record( $test, $result ) {
                $this->total++;
                $this->success += ( $result ? 1 : 0 );
        }

        function end() {
                // dummy
        }

        function report() {
                if ( $this->total > 0 ) {
                        $this->reportPercentage( $this->success, $this->total );
                } else {
                        throw new MWException( "No tests found.\n" );
                }
        }

        function reportPercentage( $success, $total ) {
                $ratio = wfPercent( 100 * $success / $total );
                print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";

                if ( $success == $total ) {
                        print $this->term->color( 32 ) . "ALL TESTS PASSED!";
                } else {
                        $failed = $total - $success ;
                        print $this->term->color( 31 ) . "$failed tests failed!";
                }

                print $this->term->reset() . "\n";

                return ( $success == $total );
        }
}

class DbTestPreviewer extends TestRecorder  {
        protected $lb;      // /< Database load balancer
        protected $db;      // /< Database connection to the main DB
        protected $curRun;  // /< run ID number for the current run
        protected $prevRun; // /< run ID number for the previous run, if any
        protected $results; // /< Result array

        function __construct( $parent ) {
                parent::__construct( $parent );

                $this->lb = wfGetLBFactory()->newMainLB();
                // This connection will have the wiki's table prefix, not parsertest_
                $this->db = $this->lb->getConnection( DB_MASTER );
        }

        function start() {
                parent::start();

                if ( ! $this->db->tableExists( 'testrun', __METHOD__ )
                        || ! $this->db->tableExists( 'testitem', __METHOD__ ) )
                {
                        print "WARNING> `testrun` table not found in database.\n";
                        $this->prevRun = false;
                } else {
                        // We'll make comparisons against the previous run later...
                        $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
                }

                $this->results = array();
        }

        function record( $test, $result ) {
                parent::record( $test, $result );
                $this->results[$test] = $result;
        }

        function report() {
                if ( $this->prevRun ) {
                        // f = fail, p = pass, n = nonexistent
                        // codes show before then after
                        $table = array(
                                'fp' => 'previously failing test(s) now PASSING! :)',
                                'pn' => 'previously PASSING test(s) removed o_O',
                                'np' => 'new PASSING test(s) :)',

                                'pf' => 'previously passing test(s) now FAILING! :(',
                                'fn' => 'previously FAILING test(s) removed O_o',
                                'nf' => 'new FAILING test(s) :(',
                                'ff' => 'still FAILING test(s) :(',
                        );

                        $prevResults = array();

                        $res = $this->db->select( 'testitem', array( 'ti_name', 'ti_success' ),
                                array( 'ti_run' => $this->prevRun ), __METHOD__ );

                        foreach ( $res as $row ) {
                                if ( !$this->parent->regex
                                        || preg_match( "/{$this->parent->regex}/i", $row->ti_name ) )
                                {
                                        $prevResults[$row->ti_name] = $row->ti_success;
                                }
                        }

                        $combined = array_keys( $this->results + $prevResults );

                        # Determine breakdown by change type
                        $breakdown = array();
                        foreach ( $combined as $test ) {
                                if ( !isset( $prevResults[$test] ) ) {
                                        $before = 'n';
                                } elseif ( $prevResults[$test] == 1 ) {
                                        $before = 'p';
                                } else /* if ( $prevResults[$test] == 0 )*/ {
                                        $before = 'f';
                                }

                                if ( !isset( $this->results[$test] ) ) {
                                        $after = 'n';
                                } elseif ( $this->results[$test] == 1 ) {
                                        $after = 'p';
                                } else /*if ( $this->results[$test] == 0 ) */ {
                                        $after = 'f';
                                }

                                $code = $before . $after;

                                if ( isset( $table[$code] ) ) {
                                        $breakdown[$code][$test] = $this->getTestStatusInfo( $test, $after );
                                }
                        }

                        # Write out results
                        foreach ( $table as $code => $label ) {
                                if ( !empty( $breakdown[$code] ) ) {
                                        $count = count( $breakdown[$code] );
                                        printf( "\n%4d %s\n", $count, $label );

                                        foreach ( $breakdown[$code] as $differing_test_name => $statusInfo ) {
                                                print "      * $differing_test_name  [$statusInfo]\n";
                                        }
                                }
                        }
                } else {
                        print "No previous test runs to compare against.\n";
                }

                print "\n";
                parent::report();
        }

        private function getTestStatusInfo( $testname, $after ) {
                // If we're looking at a test that has just been removed, then say when it first appeared.
                if ( $after == 'n' ) {
                        $changedRun = $this->db->selectField ( 'testitem',
                                'MIN(ti_run)',
                                array( 'ti_name' => $testname ),
                                __METHOD__ );
                        $appear = $this->db->selectRow ( 'testrun',
                                array( 'tr_date', 'tr_mw_version' ),
                                array( 'tr_id' => $changedRun ),
                                __METHOD__ );

                        return "First recorded appearance: "
                                   . date( "d-M-Y H:i:s",  strtotime ( $appear->tr_date ) )
                                   .  ", " . $appear->tr_mw_version;
                }

                // Otherwise, this test has previous recorded results.
                // See when this test last had a different result to what we're seeing now.
                $conds = array(
                        'ti_name'    => $testname,
                        'ti_success' => ( $after == 'f' ? "1" : "0" ) );

                if ( $this->curRun ) {
                        $conds[] = "ti_run != " . $this->db->addQuotes ( $this->curRun );
                }

                $changedRun = $this->db->selectField ( 'testitem', 'MAX(ti_run)', $conds, __METHOD__ );

                // If no record of ever having had a different result.
                if ( is_null ( $changedRun ) ) {
                        if ( $after == "f" ) {
                                return "Has never passed";
                        } else {
                                return "Has never failed";
                        }
                }

                // Otherwise, we're looking at a test whose status has changed.
                // (i.e. it used to work, but now doesn't; or used to fail, but is now fixed.)
                // In this situation, give as much info as we can as to when it changed status.
                $pre  = $this->db->selectRow ( 'testrun',
                        array( 'tr_date', 'tr_mw_version' ),
                        array( 'tr_id' => $changedRun ),
                        __METHOD__ );
                $post = $this->db->selectRow ( 'testrun',
                        array( 'tr_date', 'tr_mw_version' ),
                        array( "tr_id > " . $this->db->addQuotes ( $changedRun ) ),
                        __METHOD__,
                        array( "LIMIT" => 1, "ORDER BY" => 'tr_id' )
                );

                if ( $post ) {
                        $postDate = date( "d-M-Y H:i:s",  strtotime ( $post->tr_date  ) ) . ", {$post->tr_mw_version}";
                } else {
                        $postDate = 'now';
                }

                return ( $after == "f" ? "Introduced" : "Fixed" ) . " between "
                                . date( "d-M-Y H:i:s",  strtotime ( $pre->tr_date ) ) .  ", " . $pre->tr_mw_version
                                . " and $postDate";

        }

        function end() {
                $this->lb->commitMasterChanges();
                $this->lb->closeAll();
                parent::end();
        }

}

class DbTestRecorder extends DbTestPreviewer  {
        var $version;

        function start() {
                $this->db->begin();

                if ( ! $this->db->tableExists( 'testrun' )
                        || ! $this->db->tableExists( 'testitem' ) )
                {
                        print "WARNING> `testrun` table not found in database. Trying to create table.\n";
                        $this->db->sourceFile( $this->db->patchPath( 'patch-testrun.sql' ) );
                        echo "OK, resuming.\n";
                }

                parent::start();

                $this->db->insert( 'testrun',
                        array(
                                'tr_date'        => $this->db->timestamp(),
                                'tr_mw_version'  => $this->version,
                                'tr_php_version' => phpversion(),
                                'tr_db_version'  => $this->db->getServerVersion(),
                                'tr_uname'       => php_uname()
                        ),
                        __METHOD__ );
                        if ( $this->db->getType() === 'postgres' ) {
                                $this->curRun = $this->db->currentSequenceValue( 'testrun_id_seq' );
                        } else {
                                $this->curRun = $this->db->insertId();
                        }
        }

        function record( $test, $result ) {
                parent::record( $test, $result );

                $this->db->insert( 'testitem',
                        array(
                                'ti_run'     => $this->curRun,
                                'ti_name'    => $test,
                                'ti_success' => $result ? 1 : 0,
                        ),
                        __METHOD__ );
        }
}

class TestFileIterator implements Iterator {
        private $file;
        private $fh;
        private $parserTest; /* An instance of ParserTest (parserTests.php) or MediaWikiParserTest (phpunit) */
        private $index = 0;
        private $test;
        private $section = null; 
        private $sectionData = array();
        private $lineNum;
        private $eof;

        function __construct( $file, $parserTest ) {
                $this->file = $file;
                $this->fh = fopen( $this->file, "rt" );

                if ( !$this->fh ) {
                        throw new MWException( "Couldn't open file '$file'\n" );
                }

                $this->parserTest = $parserTest;

                $this->lineNum = $this->index = 0;
        }

        function rewind() {
                if ( fseek( $this->fh, 0 ) ) {
                        throw new MWException( "Couldn't fseek to the start of '$this->file'\n" );
                }

                $this->index = -1;
                $this->lineNum = 0;
                $this->eof = false;
                $this->next();

                return true;
        }

        function current() {
                return $this->test;
        }

        function key() {
                return $this->index;
        }

        function next() {
                if ( $this->readNextTest() ) {
                        $this->index++;
                        return true;
                } else {
                        $this->eof = true;
                }
        }

        function valid() {
                return $this->eof != true;
        }

        function readNextTest() {
                $this->clearSection();

                # Create a fake parser tests which never run anything unless
                # asked to do so. This will avoid running hooks for a disabled test
                $delayedParserTest = new DelayedParserTest();

                while ( false !== ( $line = fgets( $this->fh ) ) ) {
                        $this->lineNum++;
                        $matches = array();

                        if ( preg_match( '/^!!\s*(\w+)/', $line, $matches ) ) {
                                $this->section = strtolower( $matches[1] );

                                if ( $this->section == 'endarticle' ) {
                                        $this->checkSection( 'text'    );
                                        $this->checkSection( 'article' );

                                        $this->parserTest->addArticle( ParserTest::chomp( $this->sectionData['article'] ), $this->sectionData['text'], $this->lineNum );

                                        $this->clearSection();

                                        continue;
                                }

                                if ( $this->section == 'endhooks' ) {
                                        $this->checkSection( 'hooks' );

                                        foreach ( explode( "\n", $this->sectionData['hooks'] ) as $line ) {
                                                $line = trim( $line );

                                                if ( $line ) {
                                                        $delayedParserTest->requireHook( $line );
                                                }
                                        }

                                        $this->clearSection();

                                        continue;
                                }

                                if ( $this->section == 'endfunctionhooks' ) {
                                        $this->checkSection( 'functionhooks' );

                                        foreach ( explode( "\n", $this->sectionData['functionhooks'] ) as $line ) {
                                                $line = trim( $line );

                                                if ( $line ) {
                                                        $delayedParserTest->requireFunctionHook( $line );
                                                }
                                        }

                                        $this->clearSection();

                                        continue;
                                }

                                if ( $this->section == 'end' ) {
                                        $this->checkSection( 'test'   );
                                        $this->checkSection( 'input'  );
                                        $this->checkSection( 'result' );

                                        if ( !isset( $this->sectionData['options'] ) ) {
                                                $this->sectionData['options'] = '';
                                        }

                                        if ( !isset( $this->sectionData['config'] ) ) {
                                                $this->sectionData['config'] = '';
                                        }

                                        if ( ( ( preg_match( '/\\bdisabled\\b/i', $this->sectionData['options'] ) && !$this->parserTest->runDisabled )
                                                         || !preg_match( "/" . $this->parserTest->regex . "/i", $this->sectionData['test'] ) )  ) {
                                                # disabled test
                                                $this->clearSection();

                                                # Forget any pending hooks call since test is disabled
                                                $delayedParserTest->reset();

                                                continue;
                                        }

                                        # We are really going to run the test, run pending hooks and hooks function
                                        wfDebug( __METHOD__ . " unleashing delayed test for: {$this->sectionData['test']}" );
                                        $hooksResult = $delayedParserTest->unleash( $this->parserTest );
                                        if( !$hooksResult ) {
                                                # Some hook reported an issue. Abort.
                                                return false;
                                        }

                                        $this->test = array(
                                                'test'    => ParserTest::chomp( $this->sectionData['test']    ),
                                                'input'   => ParserTest::chomp( $this->sectionData['input']   ),
                                                'result'  => ParserTest::chomp( $this->sectionData['result']  ),
                                                'options' => ParserTest::chomp( $this->sectionData['options'] ),
                                                'config'  => ParserTest::chomp( $this->sectionData['config']  ),
                                        );

                                        return true;
                                }

                                if ( isset ( $this->sectionData[$this->section] ) ) {
                                        throw new MWException( "duplicate section '$this->section' at line {$this->lineNum} of $this->file\n" );
                                }

                                $this->sectionData[$this->section] = '';

                                continue;
                        }

                        if ( $this->section ) {
                                $this->sectionData[$this->section] .= $line;
                        }
                }

                return false;
        }


        private function clearSection() {
                $this->sectionData = array();
                $this->section = null;

        }

        private function checkSection( $token ) {
                if( is_null( $this->section ) ) {
                        throw new MWException( __METHOD__ . " can not verify a null section!\n" );
                }

                if( !isset($this->sectionData[$token]) ) {
                        throw new MWException( sprintf(
                                "'%s' without '%s' at line %s of %s\n",
                                $this->section,
                                $token,
                                $this->lineNum,
                                $this->file
                        ));
                }
                return true;
        }
}

class DelayedParserTest {

        private $hooks;
        private $fnHooks;

        public function __construct() {
                $this->reset();
        }

        public function reset() {
                $this->hooks   = array();
                $this->fnHooks = array();
        }

        public function unleash( &$parserTest ) {
                if( !($parserTest instanceof ParserTest || $parserTest instanceof NewParserTest
                ) ) {
                        throw new MWException( __METHOD__ . " must be passed an instance of ParserTest or NewParserTest classes\n" );
                }

                # Trigger delayed hooks. Any failure will make us abort
                foreach( $this->hooks as $hook ) {
                        $ret = $parserTest->requireHook( $hook );
                        if( !$ret ) {
                                return false;
                        }
                }

                # Trigger delayed function hooks. Any failure will make us abort
                foreach( $this->fnHooks as $fnHook ) {
                        $ret = $parserTest->requireFunctionHook( $fnHook );
                        if( !$ret ) {
                                return false;
                        }
                }

                # Delayed execution was successful.
                return true;
        }

        public function requireHook( $hook ) {
                $this->hooks[] = $hook;
        }
        public function requireFunctionHook( $fnHook ) {
                $this->fnHooks[] = $fnHook;
        }

}