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<?php
/**
* Tests for the AbuseFilter parser
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*
* @license GPL-2.0-or-later
* @author Marius Hoch < hoo@online.de >
*/
/**
* @group Test
* @group AbuseFilter
*
* @covers AbuseFilterCachingParser
* @covers AbuseFilterParser
* @covers AbuseFilterTokenizer
*/
class AbuseFilterParserTest extends MediaWikiTestCase {
/**
* @return AbuseFilterParser
*/
static function getParser() {
static $parser = null;
if ( !$parser ) {
$parser = new AbuseFilterParser();
}
return $parser;
}
/**
* @return AbuseFilterParser[]
*/
static function getParsers() {
static $parsers = null;
if ( !$parsers ) {
$parsers = [
new AbuseFilterParser(),
new AbuseFilterCachingParser()
];
}
return $parsers;
}
/**
* @dataProvider readTests
*/
public function testParser( $testName, $rule, $expected ) {
foreach ( self::getParsers() as $parser ) {
$actual = $parser->parse( $rule );
$this->assertEquals( $expected, $actual, 'Running parser test ' . $testName );
}
}
/**
* @return array
*/
public function readTests() {
$tests = [];
$testPath = __DIR__ . "/../parserTests";
$testFiles = glob( $testPath . "/*.t" );
foreach ( $testFiles as $testFile ) {
$testName = substr( $testFile, 0, -2 );
$resultFile = $testName . '.r';
$rule = trim( file_get_contents( $testFile ) );
$result = trim( file_get_contents( $resultFile ) ) == 'MATCH';
$tests[] = [
basename( $testName ),
$rule,
$result
];
}
return $tests;
}
/**
* Ensure that AbuseFilterTokenizer::OPERATOR_RE matches the contents
* and order of AbuseFilterTokenizer::$operators.
*/
public function testOperatorRe() {
$operatorRe = '/(' . implode( '|', array_map( function ( $op ) {
return preg_quote( $op, '/' );
}, AbuseFilterTokenizer::$operators ) ) . ')/A';
$this->assertEquals( $operatorRe, AbuseFilterTokenizer::OPERATOR_RE );
}
/**
* Ensure that AbuseFilterTokenizer::RADIX_RE matches the contents
* and order of AbuseFilterTokenizer::$bases.
*/
public function testRadixRe() {
$baseClass = implode( '', array_keys( AbuseFilterTokenizer::$bases ) );
$radixRe = "/([0-9A-Fa-f]+(?:\.\d*)?|\.\d+)([$baseClass])?/Au";
$this->assertEquals( $radixRe, AbuseFilterTokenizer::RADIX_RE );
}
/**
* Ensure the number of conditions counted for given expressions is right.
*
* @dataProvider condCountCases
*/
public function testCondCount( $rule, $expected ) {
$parser = self::getParser();
// Set some variables for convenience writing test cases
$parser->setVars( array_combine( range( 'a', 'f' ), range( 'a', 'f' ) ) );
$countBefore = AbuseFilter::$condCount;
$parser->parse( $rule );
$countAfter = AbuseFilter::$condCount;
$actual = $countAfter - $countBefore;
$this->assertEquals( $expected, $actual, 'Condition count for ' . $rule );
}
/**
* Data provider for testCondCount method.
* @return array
*/
public function condCountCases() {
return [
[ '(((a == b)))', 1 ],
[ 'contains_any(a, b, c)', 1 ],
[ 'a == b == c', 2 ],
[ 'a in b + c in d + e in f', 3 ],
[ 'true', 0 ],
[ 'a == a | c == d', 1 ],
[ 'a == b & c == d', 1 ],
];
}
/**
* get_matches should throw an exception with an invalid number of arguments.
* @expectedException AFPUserVisibleException
* @covers AbuseFilterParser::funcGetMatches
*/
public function testGetMatchesInvalidArgs() {
$parser = self::getParser();
$parser->parse( "get_matches('')" );
}
/**
* get_matches should throw an exception when given an invalid regular expression.
* @expectedException AFPUserVisibleException
* @covers AbuseFilterParser::funcGetMatches
*/
public function testGetMatchesInvalidRegex() {
$parser = self::getParser();
$parser->parse( "get_matches('this (should fail')" );
}
/**
* Ensure get_matches function captures returns expected output.
* @param string $needle Regex to pass to get_matches.
* @param string $haystack String to run regex against.
* @param string[] $expected The expected values of the matched groups.
* @covers AbuseFilterParser::funcGetMatches
* @dataProvider getMatchesCases
*/
public function testGetMatches( $needle, $haystack, $expected ) {
$parser = self::getParser();
$afpData = $parser->intEval( "get_matches('$needle', '$haystack')" )->data;
// Extract matches from AFPData.
$matches = array_map( function ( $afpDatum ) {
return $afpDatum->data;
}, $afpData );
$this->assertEquals( $expected, $matches );
}
/**
* Data provider for get_matches method.
* @return array
*/
public function getMatchesCases() {
return [
[
'You say (.*) \(and I say (.*)\)\.',
'You say hello (and I say goodbye).',
[
'You say hello (and I say goodbye).',
'hello',
'goodbye',
],
],
[
'I(?: am)? the ((walrus|egg man).*)\!',
'I am the egg man, I am the walrus !',
[
'I am the egg man, I am the walrus !',
'egg man, I am the walrus ',
'egg man',
],
],
[
'this (does) not match',
'foo bar',
[
false,
false,
],
],
];
}
}
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