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
   8                         return;
   9                 }
  10                 if ( !function_exists( 'xdiff_string_rabdiff' ) ) {
  11                         $this->markTestSkipped( 'The version of xdiff extension is lower than 1.5.0' );
  12
  13                         return;
  14                 }
  15                 if ( !extension_loaded( 'hash' ) && !extension_loaded( 'mhash' ) ) {
  16                         $this->markTestSkipped( 'Neither the hash nor mhash extension is available' );
  17
  18                         return;
  19                 }
  20                 parent::setUp();
  21         }
  22
  23         /**
  24          * Test for DiffHistoryBlob::xdiffAdler32()
  25          * @dataProvider provideXdiffAdler32
  26          */
  27         function testXdiffAdler32( $input ) {
  28                 $xdiffHash = substr( xdiff_string_rabdiff( $input, '' ), 0, 4 );
  29                 $dhb = new DiffHistoryBlob;
  30                 $myHash = $dhb->xdiffAdler32( $input );
  31                 $this->assertSame( bin2hex( $xdiffHash ), bin2hex( $myHash ),
  32                         "Hash of " . addcslashes( $input, "\0..\37!@\@\177..\377" ) );
  33         }
  34
  35         public static function provideXdiffAdler32() {
  36                 return array(
  37                         array( '', 'Empty string' ),
  38                         array( "\0", 'Null' ),
  39                         array( "\0\0\0", "Several nulls" ),
  40                         array( "Hello", "An ASCII string" ),
  41                         array( str_repeat( "x", 6000 ), "A string larger than xdiff's NMAX (5552)" )
  42                 );
  43         }
  44 }