tests/phpunit/includes/DiffHistoryBlobTest.php

   1 <?php
   2
   3 class DiffHistoryBlobTest extends MediaWikiTestCase {
   4         protected function setUp() {
   5                 if ( !extension_loaded( 'xdiff' ) ) {
   6                         $this->markTestSkipped( 'The xdiff extension is not available' );
   7                         return;
   8                 }
   9                 if ( !function_exists( 'xdiff_string_rabdiff' ) ) {
  10                         $this->markTestSkipped( 'The version of xdiff extension is lower than 1.5.0' );
  11                         return;
  12                 }
  13                 if ( !extension_loaded( 'hash' ) && !extension_loaded( 'mhash' ) ) {
  14                         $this->markTestSkipped( 'Neither the hash nor mhash extension is available' );
  15                         return;
  16                 }
  17         }
  18
  19         /**
  20          * Test for DiffHistoryBlob::xdiffAdler32()
  21          * @dataProvider provideXdiffAdler32
  22          */
  23         function testXdiffAdler32( $input ) {
  24                 $xdiffHash = substr( xdiff_string_rabdiff( $input, '' ),  0, 4 );
  25                 $dhb = new DiffHistoryBlob;
  26                 $myHash = $dhb->xdiffAdler32( $input );
  27                 $this->assertSame( bin2hex( $xdiffHash ), bin2hex( $myHash ),
  28                         "Hash of " . addcslashes( $input, "\0..\37!@\@\177..\377" ) );
  29         }
  30
  31         public static function provideXdiffAdler32() {
  32                 return array(
  33                         array( '', 'Empty string' ),
  34                         array( "\0", 'Null' ),
  35                         array( "\0\0\0", "Several nulls" ),
  36                         array( "Hello", "An ASCII string" ),
  37                         array( str_repeat( "x", 6000 ), "A string larger than xdiff's NMAX (5552)" )
  38                 );
  39         }
  40 }