tests/phpunit/includes/DiffHistoryBlobTest.php

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