tests/phpunit/includes/DiffHistoryBlobTest.php

   1 <?php
   2
   3 class DiffHistoryBlobTest extends MediaWikiTestCase {
   4
   5         protected function setUp() {
   6                 parent::setUp();
   7
   8                 if ( !extension_loaded( 'xdiff' ) ) {
   9                         $this->markTestSkipped( 'The xdiff extension is not available' );
  10
  11                         return;
  12                 }
  13                 if ( !function_exists( 'xdiff_string_rabdiff' ) ) {
  14                         $this->markTestSkipped( 'The version of xdiff extension is lower than 1.5.0' );
  15
  16                         return;
  17                 }
  18                 if ( !extension_loaded( 'hash' ) ) {
  19                         $this->markTestSkipped( 'The hash extension is not available' );
  20
  21                         return;
  22                 }
  23         }
  24
  25         /**
  26          * Test for DiffHistoryBlob::xdiffAdler32()
  27          * @dataProvider provideXdiffAdler32
  28          * @covers DiffHistoryBlob::xdiffAdler32
  29          */
  30         public function testXdiffAdler32( $input ) {
  31                 $xdiffHash = substr( xdiff_string_rabdiff( $input, '' ), 0, 4 );
  32                 $dhb = new DiffHistoryBlob;
  33                 $myHash = $dhb->xdiffAdler32( $input );
  34                 $this->assertSame( bin2hex( $xdiffHash ), bin2hex( $myHash ),
  35                         "Hash of " . addcslashes( $input, "\0..\37!@\@\177..\377" ) );
  36         }
  37
  38         public static function provideXdiffAdler32() {
  39                 return array(
  40                         array( '', 'Empty string' ),
  41                         array( "\0", 'Null' ),
  42                         array( "\0\0\0", "Several nulls" ),
  43                         array( "Hello", "An ASCII string" ),
  44                         array( str_repeat( "x", 6000 ), "A string larger than xdiff's NMAX (5552)" )
  45                 );
  46         }
  47 }