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MediaWiki 1.30.2
[autoinstallsdev/mediawiki.git] / tests / phpunit / maintenance / DumpTestCase.php
diff --git a/tests/phpunit/maintenance/DumpTestCase.php b/tests/phpunit/maintenance/DumpTestCase.php
new file mode 100644 (file)
index 0000000..99bd427
--- /dev/null
@@ -0,0 +1,407 @@
+<?php
+
+/**
+ * Base TestCase for dumps
+ */
+abstract class DumpTestCase extends MediaWikiLangTestCase {
+
+       /**
+        * exception to be rethrown once in sound PHPUnit surrounding
+        *
+        * As the current MediaWikiTestCase::run is not robust enough to recover
+        * from thrown exceptions directly, we cannot throw frow within
+        * self::addDBData, although it would be appropriate. Hence, we catch the
+        * exception and store it until we are in setUp and may finally rethrow
+        * the exception without crashing the test suite.
+        *
+        * @var Exception|null
+        */
+       protected $exceptionFromAddDBData = null;
+
+       /**
+        * Holds the XMLReader used for analyzing an XML dump
+        *
+        * @var XMLReader|null
+        */
+       protected $xml = null;
+
+       /** @var bool|null Whether the 'gzip' utility is available */
+       protected static $hasGzip = null;
+
+       /**
+        * Skip the test if 'gzip' is not in $PATH.
+        *
+        * @return bool
+        */
+       protected function checkHasGzip() {
+               if ( self::$hasGzip === null ) {
+                       self::$hasGzip = ( Installer::locateExecutableInDefaultPaths( 'gzip' ) !== false );
+               }
+
+               if ( !self::$hasGzip ) {
+                       $this->markTestSkipped( "Skip test, requires the gzip utility in PATH" );
+               }
+
+               return self::$hasGzip;
+       }
+
+       /**
+        * Adds a revision to a page, while returning the resuting revision's id
+        *
+        * @param Page $page Page to add the revision to
+        * @param string $text Revisions text
+        * @param string $summary Revisions summary
+        * @param string $model The model ID (defaults to wikitext)
+        *
+        * @throws MWException
+        * @return array
+        */
+       protected function addRevision( Page $page, $text, $summary, $model = CONTENT_MODEL_WIKITEXT ) {
+               $status = $page->doEditContent(
+                       ContentHandler::makeContent( $text, $page->getTitle(), $model ),
+                       $summary
+               );
+
+               if ( $status->isGood() ) {
+                       $value = $status->getValue();
+                       $revision = $value['revision'];
+                       $revision_id = $revision->getId();
+                       $text_id = $revision->getTextId();
+
+                       if ( ( $revision_id > 0 ) && ( $text_id > 0 ) ) {
+                               return [ $revision_id, $text_id ];
+                       }
+               }
+
+               throw new MWException( "Could not determine revision id ("
+                       . $status->getWikiText( false, false, 'en' ) . ")" );
+       }
+
+       /**
+        * gunzips the given file and stores the result in the original file name
+        *
+        * @param string $fname Filename to read the gzipped data from and stored
+        *   the gunzipped data into
+        */
+       protected function gunzip( $fname ) {
+               $gzipped_contents = file_get_contents( $fname );
+               if ( $gzipped_contents === false ) {
+                       $this->fail( "Could not get contents of $fname" );
+               }
+
+               $contents = gzdecode( $gzipped_contents );
+
+               $this->assertEquals(
+                       strlen( $contents ),
+                       file_put_contents( $fname, $contents ),
+                       '# bytes written'
+               );
+       }
+
+       /**
+        * Default set up function.
+        *
+        * Clears $wgUser, and reports errors from addDBData to PHPUnit
+        */
+       protected function setUp() {
+               parent::setUp();
+
+               // Check if any Exception is stored for rethrowing from addDBData
+               // @see self::exceptionFromAddDBData
+               if ( $this->exceptionFromAddDBData !== null ) {
+                       throw $this->exceptionFromAddDBData;
+               }
+
+               $this->setMwGlobals( 'wgUser', new User() );
+       }
+
+       /**
+        * Checks for test output consisting only of lines containing ETA announcements
+        */
+       function expectETAOutput() {
+               // Newer PHPUnits require assertion about the output using PHPUnit's own
+               // expectOutput[...] functions. However, the PHPUnit shipped prediactes
+               // do not allow to check /each/ line of the output using /readable/ REs.
+               // So we ...
+
+               // 1. ... add a dummy output checking to make PHPUnit not complain
+               //    about unchecked test output
+               $this->expectOutputRegex( '//' );
+
+               // 2. Do the real output checking on our own.
+               $lines = explode( "\n", $this->getActualOutput() );
+               $this->assertGreaterThan( 1, count( $lines ), "Minimal lines of produced output" );
+               $this->assertEquals( '', array_pop( $lines ), "Output ends in LF" );
+               $timestamp_re = "[0-9]{4}-[01][0-9]-[0-3][0-9] [0-2][0-9]:[0-5][0-9]:[0-6][0-9]";
+               foreach ( $lines as $line ) {
+                       $this->assertRegExp(
+                               "/$timestamp_re: .* \(ID [0-9]+\) [0-9]* pages .*, [0-9]* revs .*, ETA/",
+                               $line
+                       );
+               }
+       }
+
+       /**
+        * Step the current XML reader until node end of given name is found.
+        *
+        * @param string $name Name of the closing element to look for
+        *   (e.g.: "mediawiki" when looking for </mediawiki>)
+        *
+        * @return bool True if the end node could be found. false otherwise.
+        */
+       protected function skipToNodeEnd( $name ) {
+               while ( $this->xml->read() ) {
+                       if ( $this->xml->nodeType == XMLReader::END_ELEMENT &&
+                               $this->xml->name == $name
+                       ) {
+                               return true;
+                       }
+               }
+
+               return false;
+       }
+
+       /**
+        * Step the current XML reader to the first element start after the node
+        * end of a given name.
+        *
+        * @param string $name Name of the closing element to look for
+        *   (e.g.: "mediawiki" when looking for </mediawiki>)
+        *
+        * @return bool True if new element after the closing of $name could be
+        *   found. false otherwise.
+        */
+       protected function skipPastNodeEnd( $name ) {
+               $this->assertTrue( $this->skipToNodeEnd( $name ),
+                       "Skipping to end of $name" );
+               while ( $this->xml->read() ) {
+                       if ( $this->xml->nodeType == XMLReader::ELEMENT ) {
+                               return true;
+                       }
+               }
+
+               return false;
+       }
+
+       /**
+        * Opens an XML file to analyze and optionally skips past siteinfo.
+        *
+        * @param string $fname Name of file to analyze
+        * @param bool $skip_siteinfo (optional) If true, step the xml reader
+        *   to the first element after </siteinfo>
+        */
+       protected function assertDumpStart( $fname, $skip_siteinfo = true ) {
+               $this->xml = new XMLReader();
+               $this->assertTrue( $this->xml->open( $fname ),
+                       "Opening temporary file $fname via XMLReader failed" );
+               if ( $skip_siteinfo ) {
+                       $this->assertTrue( $this->skipPastNodeEnd( "siteinfo" ),
+                               "Skipping past end of siteinfo" );
+               }
+       }
+
+       /**
+        * Asserts that the xml reader is at the final closing tag of an xml file and
+        * closes the reader.
+        *
+        * @param string $name (optional) the name of the final tag
+        *   (e.g.: "mediawiki" for </mediawiki>)
+        */
+       protected function assertDumpEnd( $name = "mediawiki" ) {
+               $this->assertNodeEnd( $name, false );
+               if ( $this->xml->read() ) {
+                       $this->skipWhitespace();
+               }
+               $this->assertEquals( $this->xml->nodeType, XMLReader::NONE,
+                       "No proper entity left to parse" );
+               $this->xml->close();
+       }
+
+       /**
+        * Steps the xml reader over white space
+        */
+       protected function skipWhitespace() {
+               $cont = true;
+               while ( $cont && ( ( $this->xml->nodeType == XMLReader::WHITESPACE )
+                       || ( $this->xml->nodeType == XMLReader::SIGNIFICANT_WHITESPACE ) ) ) {
+                       $cont = $this->xml->read();
+               }
+       }
+
+       /**
+        * Asserts that the xml reader is at an element of given name, and optionally
+        * skips past it.
+        *
+        * @param string $name The name of the element to check for
+        *   (e.g.: "mediawiki" for <mediawiki>)
+        * @param bool $skip (optional) if true, skip past the found element
+        */
+       protected function assertNodeStart( $name, $skip = true ) {
+               $this->assertEquals( $name, $this->xml->name, "Node name" );
+               $this->assertEquals( XMLReader::ELEMENT, $this->xml->nodeType, "Node type" );
+               if ( $skip ) {
+                       $this->assertTrue( $this->xml->read(), "Skipping past start tag" );
+               }
+       }
+
+       /**
+        * Asserts that the xml reader is at an closing element of given name, and optionally
+        * skips past it.
+        *
+        * @param string $name The name of the closing element to check for
+        *   (e.g.: "mediawiki" for </mediawiki>)
+        * @param bool $skip (optional) if true, skip past the found element
+        */
+       protected function assertNodeEnd( $name, $skip = true ) {
+               $this->assertEquals( $name, $this->xml->name, "Node name" );
+               $this->assertEquals( XMLReader::END_ELEMENT, $this->xml->nodeType, "Node type" );
+               if ( $skip ) {
+                       $this->assertTrue( $this->xml->read(), "Skipping past end tag" );
+               }
+       }
+
+       /**
+        * Asserts that the xml reader is at an element of given tag that contains a given text,
+        * and skips over the element.
+        *
+        * @param string $name The name of the element to check for
+        *   (e.g.: "mediawiki" for <mediawiki>...</mediawiki>)
+        * @param string|bool $text If string, check if it equals the elements text.
+        *   If false, ignore the element's text
+        * @param bool $skip_ws (optional) if true, skip past white spaces that trail the
+        *   closing element.
+        */
+       protected function assertTextNode( $name, $text, $skip_ws = true ) {
+               $this->assertNodeStart( $name );
+
+               if ( $text !== false ) {
+                       $this->assertEquals( $text, $this->xml->value, "Text of node " . $name );
+               }
+               $this->assertTrue( $this->xml->read(), "Skipping past processed text of " . $name );
+               $this->assertNodeEnd( $name );
+
+               if ( $skip_ws ) {
+                       $this->skipWhitespace();
+               }
+       }
+
+       /**
+        * Asserts that the xml reader is at the start of a page element and skips over the first
+        * tags, after checking them.
+        *
+        * Besides the opening page element, this function also checks for and skips over the
+        * title, ns, and id tags. Hence after this function, the xml reader is at the first
+        * revision of the current page.
+        *
+        * @param int $id Id of the page to assert
+        * @param int $ns Number of namespage to assert
+        * @param string $name Title of the current page
+        */
+       protected function assertPageStart( $id, $ns, $name ) {
+               $this->assertNodeStart( "page" );
+               $this->skipWhitespace();
+
+               $this->assertTextNode( "title", $name );
+               $this->assertTextNode( "ns", $ns );
+               $this->assertTextNode( "id", $id );
+       }
+
+       /**
+        * Asserts that the xml reader is at the page's closing element and skips to the next
+        * element.
+        */
+       protected function assertPageEnd() {
+               $this->assertNodeEnd( "page" );
+               $this->skipWhitespace();
+       }
+
+       /**
+        * Asserts that the xml reader is at a revision and checks its representation before
+        * skipping over it.
+        *
+        * @param int $id Id of the revision
+        * @param string $summary Summary of the revision
+        * @param int $text_id Id of the revision's text
+        * @param int $text_bytes Number of bytes in the revision's text
+        * @param string $text_sha1 The base36 SHA-1 of the revision's text
+        * @param string|bool $text (optional) The revision's string, or false to check for a
+        *            revision stub
+        * @param int|bool $parentid (optional) id of the parent revision
+        * @param string $model The expected content model id (default: CONTENT_MODEL_WIKITEXT)
+        * @param string $format The expected format model id (default: CONTENT_FORMAT_WIKITEXT)
+        */
+       protected function assertRevision( $id, $summary, $text_id, $text_bytes,
+               $text_sha1, $text = false, $parentid = false,
+               $model = CONTENT_MODEL_WIKITEXT, $format = CONTENT_FORMAT_WIKITEXT
+       ) {
+               $this->assertNodeStart( "revision" );
+               $this->skipWhitespace();
+
+               $this->assertTextNode( "id", $id );
+               if ( $parentid !== false ) {
+                       $this->assertTextNode( "parentid", $parentid );
+               }
+               $this->assertTextNode( "timestamp", false );
+
+               $this->assertNodeStart( "contributor" );
+               $this->skipWhitespace();
+               $this->assertTextNode( "ip", false );
+               $this->assertNodeEnd( "contributor" );
+               $this->skipWhitespace();
+
+               $this->assertTextNode( "comment", $summary );
+               $this->skipWhitespace();
+
+               $this->assertTextNode( "model", $model );
+               $this->skipWhitespace();
+
+               $this->assertTextNode( "format", $format );
+               $this->skipWhitespace();
+
+               if ( $this->xml->name == "text" ) {
+                       // note: <text> tag may occur here or at the very end.
+                       $text_found = true;
+                       $this->assertText( $id, $text_id, $text_bytes, $text );
+               } else {
+                       $text_found = false;
+               }
+
+               $this->assertTextNode( "sha1", $text_sha1 );
+
+               if ( !$text_found ) {
+                       $this->assertText( $id, $text_id, $text_bytes, $text );
+               }
+
+               $this->assertNodeEnd( "revision" );
+               $this->skipWhitespace();
+       }
+
+       protected function assertText( $id, $text_id, $text_bytes, $text ) {
+               $this->assertNodeStart( "text", false );
+               if ( $text_bytes !== false ) {
+                       $this->assertEquals( $this->xml->getAttribute( "bytes" ), $text_bytes,
+                               "Attribute 'bytes' of revision " . $id );
+               }
+
+               if ( $text === false ) {
+                       // Testing for a stub
+                       $this->assertEquals( $this->xml->getAttribute( "id" ), $text_id,
+                               "Text id of revision " . $id );
+                       $this->assertFalse( $this->xml->hasValue, "Revision has text" );
+                       $this->assertTrue( $this->xml->read(), "Skipping text start tag" );
+                       if ( ( $this->xml->nodeType == XMLReader::END_ELEMENT )
+                               && ( $this->xml->name == "text" )
+                       ) {
+                               $this->xml->read();
+                       }
+                       $this->skipWhitespace();
+               } else {
+                       // Testing for a real dump
+                       $this->assertTrue( $this->xml->read(), "Skipping text start tag" );
+                       $this->assertEquals( $text, $this->xml->value, "Text of revision " . $id );
+                       $this->assertTrue( $this->xml->read(), "Skipping past text" );
+                       $this->assertNodeEnd( "text" );
+                       $this->skipWhitespace();
+               }
+       }
+}