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-rw-r--r--tests/phpunit/includes/DiffHistoryBlobTest.php44
1 files changed, 44 insertions, 0 deletions
diff --git a/tests/phpunit/includes/DiffHistoryBlobTest.php b/tests/phpunit/includes/DiffHistoryBlobTest.php
new file mode 100644
index 00000000..a4d5b91a
--- /dev/null
+++ b/tests/phpunit/includes/DiffHistoryBlobTest.php
@@ -0,0 +1,44 @@
+<?php
+
+class DiffHistoryBlobTest extends MediaWikiTestCase {
+ protected function setUp() {
+ if ( !extension_loaded( 'xdiff' ) ) {
+ $this->markTestSkipped( 'The xdiff extension is not available' );
+
+ return;
+ }
+ if ( !function_exists( 'xdiff_string_rabdiff' ) ) {
+ $this->markTestSkipped( 'The version of xdiff extension is lower than 1.5.0' );
+
+ return;
+ }
+ if ( !extension_loaded( 'hash' ) ) {
+ $this->markTestSkipped( 'The hash extension is not available' );
+
+ return;
+ }
+ parent::setUp();
+ }
+
+ /**
+ * Test for DiffHistoryBlob::xdiffAdler32()
+ * @dataProvider provideXdiffAdler32
+ */
+ public function testXdiffAdler32( $input ) {
+ $xdiffHash = substr( xdiff_string_rabdiff( $input, '' ), 0, 4 );
+ $dhb = new DiffHistoryBlob;
+ $myHash = $dhb->xdiffAdler32( $input );
+ $this->assertSame( bin2hex( $xdiffHash ), bin2hex( $myHash ),
+ "Hash of " . addcslashes( $input, "\0..\37!@\@\177..\377" ) );
+ }
+
+ public static function provideXdiffAdler32() {
+ return array(
+ array( '', 'Empty string' ),
+ array( "\0", 'Null' ),
+ array( "\0\0\0", "Several nulls" ),
+ array( "Hello", "An ASCII string" ),
+ array( str_repeat( "x", 6000 ), "A string larger than xdiff's NMAX (5552)" )
+ );
+ }
+}