Update to MediaWiki 1.21.2

8 files changed, 3006 insertions, 0 deletions

diff --git a/tests/phpunit/maintenance/DumpTestCase.php b/tests/phpunit/maintenance/DumpTestCase.php
new file mode 100644
index 00000000..40d24fc5
--- /dev/null
+++ b/tests/phpunit/maintenance/DumpTestCase.php
@@ -0,0 +1,377 @@
+<?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;
+
+	/**
+	 * Adds a revision to a page, while returning the resuting revision's id
+	 *
+	 * @param $page WikiPage: page to add the revision to
+	 * @param $text string: revisions text
+	 * @param $text string: revisions summare
+	 *
+	 * @throws MWExcepion
+	 */
+	protected function addRevision( Page $page, $text, $summary ) {
+		$status = $page->doEditContent( ContentHandler::makeContent( $text, $page->getTitle() ), $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 array( $revision_id, $text_id );
+			}
+		}
+		throw new MWException( "Could not determine revision id (" . $status->getWikiText() . ")" );
+	}
+
+
+	/**
+	 * gunzips the given file and stores the result in the original file name
+	 *
+	 * @param $fname string: 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" );
+		}
+		// We resort to use gzinflate instead of gzdecode, as gzdecode
+		// need not be available
+		$contents = gzinflate( substr( $gzipped_contents, 10, -8 ) );
+		$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() {
+		global $wgUser;
+
+		parent::setUp();
+
+		// Check if any Exception is stored for rethrowing from addDBData
+		// @see self::exceptionFromAddDBData
+		if ( $this->exceptionFromAddDBData !== null ) {
+			throw $this->exceptionFromAddDBData;
+		}
+
+		$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 $name string: name of the closing element to look for
+	 *           (e.g.: "mediawiki" when looking for </mediawiki>)
+	 *
+	 * @return bool: true iff 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 $name string: name of the closing element to look for
+	 *           (e.g.: "mediawiki" when looking for </mediawiki>)
+	 *
+	 * @return bool: true iff 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 $fname string: name of file to analyze
+	 * @param $skip_siteinfo bool: (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 $tag string: (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 $name string: the name of the element to check for
+	 *           (e.g.: "mediawiki" for <mediawiki>)
+	 * @param $skip bool: (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 $name string: the name of the closing element to check for
+	 *           (e.g.: "mediawiki" for </mediawiki>)
+	 * @param $skip bool: (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 $name string: the name of the element to check for
+	 *           (e.g.: "mediawiki" for <mediawiki>...</mediawiki>)
+	 * @param $text string|false: If string, check if it equals the elements text.
+	 *           If false, ignore the element's text
+	 * @param $skip_ws bool: (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 $id int: id of the page to assert
+	 * @param $ns int: number of namespage to assert
+	 * @param $name string: 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 $id int: id of the revision
+	 * @param $summary string: summary of the revision
+	 * @param $text_id int: id of the revision's text
+	 * @param $text_bytes int: # of bytes in the revision's text
+	 * @param $text_sha1 string: the base36 SHA-1 of the revision's text
+	 * @param $text string|false: (optional) The revision's string, or false to check for a
+	 *            revision stub
+	 * @param $model String: the expected content model id (default: CONTENT_MODEL_WIKITEXT)
+	 * @param $format String: the expected format model id (default: CONTENT_FORMAT_WIKITEXT)
+	 * @param $parentid int|false: (optional) id of the parent revision
+	 */
+	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();
+
+		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 );
+
+		$this->assertTextNode( "model", $model );
+		$this->skipWhitespace();
+
+		$this->assertTextNode( "format", $format );
+		$this->skipWhitespace();
+
+		if ( !$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();
+		}
+	}
+}
diff --git a/tests/phpunit/maintenance/MaintenanceTest.php b/tests/phpunit/maintenance/MaintenanceTest.php
new file mode 100644
index 00000000..741f8b7f
--- /dev/null
+++ b/tests/phpunit/maintenance/MaintenanceTest.php
@@ -0,0 +1,820 @@
+<?php
+
+// It would be great if we were able to use PHPUnit's getMockForAbstractClass
+// instead of the MaintenanceFixup hack below. However, we cannot do
+// without changing the visibility and without working around hacks in
+// Maintenance.php
+//
+// For the same reason, we cannot just use FakeMaintenance.
+
+/**
+ * makes parts of the API of Maintenance that is hidden by protected visibily
+ * visible for testing, and makes up for a stream closing hack in Maintenance.php.
+ *
+ * This class is solely used for being able to test Maintenance right now
+ * without having to apply major refactorings to fix some design issues in
+ * Maintenance.php. Before adding more functions here, please consider whether
+ * this approach is correct, or a refactoring Maintenance to separate concers
+ * is more appropriate.
+ *
+ * Upon refactoring, keep in mind that besides the maintenance scrits themselves
+ * and tests right here, also at least Extension:Maintenance make use of
+ * Maintenance.
+ *
+ * Due to a hack in Maintenance.php using register_shutdown_function, be sure to
+ * finally call simulateShutdown on MaintenanceFixup instance before a test
+ * ends.
+ *
+ */
+class MaintenanceFixup extends Maintenance {
+
+	// --- Making up for the register_shutdown_function hack in Maintenance.php
+
+	/**
+	 * The test case that generated this instance.
+	 *
+	 * This member is motivated by allowing the destructor to check whether or not
+	 * the test failed, in order to avoid unnecessary nags about omitted shutdown
+	 * simulation.
+	 * But as it is already available, we also usi it to flagging tests as failed
+	 *
+	 * @var MediaWikiTestCase
+	 */
+	private $testCase;
+
+	/**
+	 * shutdownSimulated === true iff simulateShutdown has done it's work
+	 *
+	 * @var bool
+	 */
+	private $shutdownSimulated = false;
+
+	/**
+	 * Simulates what Maintenance wants to happen at script's end.
+	 */
+	public function simulateShutdown() {
+
+		if ( $this->shutdownSimulated ) {
+			$this->testCase->fail( __METHOD__ . " called more than once" );
+		}
+
+		// The cleanup action.
+		$this->outputChanneled( false );
+
+		// Bookkeeping that we simulated the clean up.
+		$this->shutdownSimulated = true;
+	}
+
+	// Note that the "public" here does not change visibility
+	public function outputChanneled( $msg, $channel = null ) {
+		if ( $this->shutdownSimulated ) {
+			if ( $msg !== false ) {
+				$this->testCase->fail( "Already past simulated shutdown, but msg is "
+					. "not false. Did the hack in Maintenance.php change? Please "
+					. "adapt the test case or Maintenance.php" );
+			}
+
+			// The current call is the one registered via register_shutdown_function.
+			// We can safely ignore it, as we simulated this one via simulateShutdown
+			// before (if we did not, the destructor of this instance will warn about
+			// it)
+			return;
+		}
+
+		return call_user_func_array( array( "parent", __FUNCTION__ ), func_get_args() );
+	}
+
+	/**
+	 * Safety net around register_shutdown_function of Maintenance.php
+	 */
+	public function __destruct() {
+		if ( !$this->shutdownSimulated ) {
+			// Someone generated a MaintenanceFixup instance without calling
+			// simulateShutdown. We'd have to raise a PHPUnit exception to correctly
+			// flag this illegal usage. However, we are already in a destruktor, which
+			// would trigger undefined behavior. Hence, we can only report to the
+			// error output :( Hopefully people read the PHPUnit output.
+			$name = $this->testCase->getName();
+			fwrite( STDERR, "ERROR! Instance of " . __CLASS__ . " for test $name "
+				. "destructed without calling simulateShutdown method. Call "
+				. "simulateShutdown on the instance before it gets destructed." );
+		}
+
+		// The following guard is required, as PHP does not offer default destructors :(
+		if ( is_callable( "parent::__destruct" ) ) {
+			parent::__destruct();
+		}
+	}
+
+	public function __construct( MediaWikiTestCase $testCase ) {
+		parent::__construct();
+		$this->testCase = $testCase;
+	}
+
+
+	// --- Making protected functions visible for test
+
+	public function output( $out, $channel = null ) {
+		// Just to make PHP not nag about signature mismatches, we copied
+		// Maintenance::output signature. However, we do not use (or rely on)
+		// those variables. Instead we pass to Maintenance::output whatever we
+		// receive at runtime.
+		return call_user_func_array( array( "parent", __FUNCTION__ ), func_get_args() );
+	}
+
+
+	// --- Requirements for getting instance of abstract class
+
+	public function execute() {
+		$this->testCase->fail( __METHOD__ . " called unexpectedly" );
+	}
+
+}
+
+class MaintenanceTest extends MediaWikiTestCase {
+
+
+	/**
+	 * The main Maintenance instance that is used for testing.
+	 *
+	 * @var MaintenanceFixup
+	 */
+	private $m;
+
+
+	protected function setUp() {
+		parent::setUp();
+		$this->m = new MaintenanceFixup( $this );
+	}
+
+	protected function tearDown() {
+		if ( $this->m ) {
+			$this->m->simulateShutdown();
+			$this->m = null;
+		}
+		parent::tearDown();
+	}
+
+
+	/**
+	 * asserts the output before and after simulating shutdown
+	 *
+	 * This function simulates shutdown of self::m.
+	 *
+	 * @param $preShutdownOutput string: expected output before simulating shutdown
+	 * @param $expectNLAppending bool: Whether or not shutdown simulation is expected
+	 *            to add a newline to the output. If false, $preShutdownOutput is the
+	 *            expected output after shutdown simulation. Otherwise,
+	 *            $preShutdownOutput with an appended newline is the expected output
+	 *            after shutdown simulation.
+	 */
+	private function assertOutputPrePostShutdown( $preShutdownOutput, $expectNLAppending ) {
+
+		$this->assertEquals( $preShutdownOutput, $this->getActualOutput(),
+			"Output before shutdown simulation" );
+
+		$this->m->simulateShutdown();
+		$this->m = null;
+
+		$postShutdownOutput = $preShutdownOutput . ( $expectNLAppending ? "\n" : "" );
+		$this->expectOutputString( $postShutdownOutput );
+	}
+
+
+	// Although the following tests do not seem to be too consistent (compare for
+	// example the newlines within the test.*StringString tests, or the
+	// test.*Intermittent.* tests), the objective of these tests is not to describe
+	// consistent behavior, but rather currently existing behavior.
+
+
+	function testOutputEmpty() {
+		$this->m->output( "" );
+		$this->assertOutputPrePostShutdown( "", false );
+	}
+
+	function testOutputString() {
+		$this->m->output( "foo" );
+		$this->assertOutputPrePostShutdown( "foo", false );
+	}
+
+	function testOutputStringString() {
+		$this->m->output( "foo" );
+		$this->m->output( "bar" );
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testOutputStringNL() {
+		$this->m->output( "foo\n" );
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testOutputStringNLNL() {
+		$this->m->output( "foo\n\n" );
+		$this->assertOutputPrePostShutdown( "foo\n\n", false );
+	}
+
+	function testOutputStringNLString() {
+		$this->m->output( "foo\nbar" );
+		$this->assertOutputPrePostShutdown( "foo\nbar", false );
+	}
+
+	function testOutputStringNLStringNL() {
+		$this->m->output( "foo\nbar\n" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputStringNLStringNLLinewise() {
+		$this->m->output( "foo\n" );
+		$this->m->output( "bar\n" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputStringNLStringNLArbitrary() {
+		$this->m->output( "" );
+		$this->m->output( "foo" );
+		$this->m->output( "" );
+		$this->m->output( "\n" );
+		$this->m->output( "ba" );
+		$this->m->output( "" );
+		$this->m->output( "r\n" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputStringNLStringNLArbitraryAgain() {
+		$this->m->output( "" );
+		$this->m->output( "foo" );
+		$this->m->output( "" );
+		$this->m->output( "\nb" );
+		$this->m->output( "a" );
+		$this->m->output( "" );
+		$this->m->output( "r\n" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputWNullChannelEmpty() {
+		$this->m->output( "", null );
+		$this->assertOutputPrePostShutdown( "", false );
+	}
+
+	function testOutputWNullChannelString() {
+		$this->m->output( "foo", null );
+		$this->assertOutputPrePostShutdown( "foo", false );
+	}
+
+	function testOutputWNullChannelStringString() {
+		$this->m->output( "foo", null );
+		$this->m->output( "bar", null );
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testOutputWNullChannelStringNL() {
+		$this->m->output( "foo\n", null );
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testOutputWNullChannelStringNLNL() {
+		$this->m->output( "foo\n\n", null );
+		$this->assertOutputPrePostShutdown( "foo\n\n", false );
+	}
+
+	function testOutputWNullChannelStringNLString() {
+		$this->m->output( "foo\nbar", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar", false );
+	}
+
+	function testOutputWNullChannelStringNLStringNL() {
+		$this->m->output( "foo\nbar\n", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputWNullChannelStringNLStringNLLinewise() {
+		$this->m->output( "foo\n", null );
+		$this->m->output( "bar\n", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputWNullChannelStringNLStringNLArbitrary() {
+		$this->m->output( "", null );
+		$this->m->output( "foo", null );
+		$this->m->output( "", null );
+		$this->m->output( "\n", null );
+		$this->m->output( "ba", null );
+		$this->m->output( "", null );
+		$this->m->output( "r\n", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputWNullChannelStringNLStringNLArbitraryAgain() {
+		$this->m->output( "", null );
+		$this->m->output( "foo", null );
+		$this->m->output( "", null );
+		$this->m->output( "\nb", null );
+		$this->m->output( "a", null );
+		$this->m->output( "", null );
+		$this->m->output( "r\n", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputWChannelString() {
+		$this->m->output( "foo", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo", true );
+	}
+
+	function testOutputWChannelStringNL() {
+		$this->m->output( "foo\n", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo", true );
+	}
+
+	function testOutputWChannelStringNLNL() {
+		// If this test fails, note that output takes strings with double line
+		// endings (although output's implementation in this situation calls
+		// outputChanneled with a string ending in a nl ... which is not allowed
+		// according to the documentation of outputChanneled)
+		$this->m->output( "foo\n\n", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\n", true );
+	}
+
+	function testOutputWChannelStringNLString() {
+		$this->m->output( "foo\nbar", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testOutputWChannelStringNLStringNL() {
+		$this->m->output( "foo\nbar\n", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testOutputWChannelStringNLStringNLLinewise() {
+		$this->m->output( "foo\n", "bazChannel" );
+		$this->m->output( "bar\n", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar", true );
+	}
+
+	function testOutputWChannelStringNLStringNLArbitrary() {
+		$this->m->output( "", "bazChannel" );
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->output( "", "bazChannel" );
+		$this->m->output( "\n", "bazChannel" );
+		$this->m->output( "ba", "bazChannel" );
+		$this->m->output( "", "bazChannel" );
+		$this->m->output( "r\n", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar", true );
+	}
+
+	function testOutputWChannelStringNLStringNLArbitraryAgain() {
+		$this->m->output( "", "bazChannel" );
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->output( "", "bazChannel" );
+		$this->m->output( "\nb", "bazChannel" );
+		$this->m->output( "a", "bazChannel" );
+		$this->m->output( "", "bazChannel" );
+		$this->m->output( "r\n", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testOutputWMultipleChannelsChannelChange() {
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->output( "bar", "bazChannel" );
+		$this->m->output( "qux", "quuxChannel" );
+		$this->m->output( "corge", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar\nqux\ncorge", true );
+	}
+
+	function testOutputWMultipleChannelsChannelChangeNL() {
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->output( "bar\n", "bazChannel" );
+		$this->m->output( "qux\n", "quuxChannel" );
+		$this->m->output( "corge", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar\nqux\ncorge", true );
+	}
+
+	function testOutputWAndWOChannelStringStartWO() {
+		$this->m->output( "foo" );
+		$this->m->output( "bar", "bazChannel" );
+		$this->m->output( "qux" );
+		$this->m->output( "quux", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar\nquxquux", true );
+	}
+
+	function testOutputWAndWOChannelStringStartW() {
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->output( "bar" );
+		$this->m->output( "qux", "bazChannel" );
+		$this->m->output( "quux" );
+		$this->assertOutputPrePostShutdown( "foo\nbarqux\nquux", false );
+	}
+
+	function testOutputWChannelTypeSwitch() {
+		$this->m->output( "foo", 1 );
+		$this->m->output( "bar", 1.0 );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testOutputIntermittentEmpty() {
+		$this->m->output( "foo" );
+		$this->m->output( "" );
+		$this->m->output( "bar" );
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testOutputIntermittentFalse() {
+		$this->m->output( "foo" );
+		$this->m->output( false );
+		$this->m->output( "bar" );
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testOutputIntermittentFalseAfterOtherChannel() {
+		$this->m->output( "qux", "quuxChannel" );
+		$this->m->output( "foo" );
+		$this->m->output( false );
+		$this->m->output( "bar" );
+		$this->assertOutputPrePostShutdown( "qux\nfoobar", false );
+	}
+
+	function testOutputWNullChannelIntermittentEmpty() {
+		$this->m->output( "foo", null );
+		$this->m->output( "", null );
+		$this->m->output( "bar", null );
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testOutputWNullChannelIntermittentFalse() {
+		$this->m->output( "foo", null );
+		$this->m->output( false, null );
+		$this->m->output( "bar", null );
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testOutputWChannelIntermittentEmpty() {
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->output( "", "bazChannel" );
+		$this->m->output( "bar", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar", true );
+	}
+
+	function testOutputWChannelIntermittentFalse() {
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->output( false, "bazChannel" );
+		$this->m->output( "bar", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar", true );
+	}
+
+	// Note that (per documentation) outputChanneled does take strings that end
+	// in \n, hence we do not test such strings.
+
+	function testOutputChanneledEmpty() {
+		$this->m->outputChanneled( "" );
+		$this->assertOutputPrePostShutdown( "\n", false );
+	}
+
+	function testOutputChanneledString() {
+		$this->m->outputChanneled( "foo" );
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testOutputChanneledStringString() {
+		$this->m->outputChanneled( "foo" );
+		$this->m->outputChanneled( "bar" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputChanneledStringNLString() {
+		$this->m->outputChanneled( "foo\nbar" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputChanneledStringNLStringNLArbitraryAgain() {
+		$this->m->outputChanneled( "" );
+		$this->m->outputChanneled( "foo" );
+		$this->m->outputChanneled( "" );
+		$this->m->outputChanneled( "\nb" );
+		$this->m->outputChanneled( "a" );
+		$this->m->outputChanneled( "" );
+		$this->m->outputChanneled( "r" );
+		$this->assertOutputPrePostShutdown( "\nfoo\n\n\nb\na\n\nr\n", false );
+	}
+
+	function testOutputChanneledWNullChannelEmpty() {
+		$this->m->outputChanneled( "", null );
+		$this->assertOutputPrePostShutdown( "\n", false );
+	}
+
+	function testOutputChanneledWNullChannelString() {
+		$this->m->outputChanneled( "foo", null );
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testOutputChanneledWNullChannelStringString() {
+		$this->m->outputChanneled( "foo", null );
+		$this->m->outputChanneled( "bar", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputChanneledWNullChannelStringNLString() {
+		$this->m->outputChanneled( "foo\nbar", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputChanneledWNullChannelStringNLStringNLArbitraryAgain() {
+		$this->m->outputChanneled( "", null );
+		$this->m->outputChanneled( "foo", null );
+		$this->m->outputChanneled( "", null );
+		$this->m->outputChanneled( "\nb", null );
+		$this->m->outputChanneled( "a", null );
+		$this->m->outputChanneled( "", null );
+		$this->m->outputChanneled( "r", null );
+		$this->assertOutputPrePostShutdown( "\nfoo\n\n\nb\na\n\nr\n", false );
+	}
+
+	function testOutputChanneledWChannelString() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo", true );
+	}
+
+	function testOutputChanneledWChannelStringNLString() {
+		$this->m->outputChanneled( "foo\nbar", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testOutputChanneledWChannelStringString() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( "bar", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar", true );
+	}
+
+	function testOutputChanneledWChannelStringNLStringNLArbitraryAgain() {
+		$this->m->outputChanneled( "", "bazChannel" );
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( "", "bazChannel" );
+		$this->m->outputChanneled( "\nb", "bazChannel" );
+		$this->m->outputChanneled( "a", "bazChannel" );
+		$this->m->outputChanneled( "", "bazChannel" );
+		$this->m->outputChanneled( "r", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testOutputChanneledWMultipleChannelsChannelChange() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( "bar", "bazChannel" );
+		$this->m->outputChanneled( "qux", "quuxChannel" );
+		$this->m->outputChanneled( "corge", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar\nqux\ncorge", true );
+	}
+
+	function testOutputChanneledWMultipleChannelsChannelChangeEnclosedNull() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( "bar", null );
+		$this->m->outputChanneled( "qux", null );
+		$this->m->outputChanneled( "corge", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\nqux\ncorge", true );
+	}
+
+	function testOutputChanneledWMultipleChannelsChannelAfterNullChange() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( "bar", null );
+		$this->m->outputChanneled( "qux", null );
+		$this->m->outputChanneled( "corge", "quuxChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\nqux\ncorge", true );
+	}
+
+	function testOutputChanneledWAndWOChannelStringStartWO() {
+		$this->m->outputChanneled( "foo" );
+		$this->m->outputChanneled( "bar", "bazChannel" );
+		$this->m->outputChanneled( "qux" );
+		$this->m->outputChanneled( "quux", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\nqux\nquux", true );
+	}
+
+	function testOutputChanneledWAndWOChannelStringStartW() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( "bar" );
+		$this->m->outputChanneled( "qux", "bazChannel" );
+		$this->m->outputChanneled( "quux" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\nqux\nquux\n", false );
+	}
+
+	function testOutputChanneledWChannelTypeSwitch() {
+		$this->m->outputChanneled( "foo", 1 );
+		$this->m->outputChanneled( "bar", 1.0 );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testOutputChanneledWOChannelIntermittentEmpty() {
+		$this->m->outputChanneled( "foo" );
+		$this->m->outputChanneled( "" );
+		$this->m->outputChanneled( "bar" );
+		$this->assertOutputPrePostShutdown( "foo\n\nbar\n", false );
+	}
+
+	function testOutputChanneledWOChannelIntermittentFalse() {
+		$this->m->outputChanneled( "foo" );
+		$this->m->outputChanneled( false );
+		$this->m->outputChanneled( "bar" );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputChanneledWNullChannelIntermittentEmpty() {
+		$this->m->outputChanneled( "foo", null );
+		$this->m->outputChanneled( "", null );
+		$this->m->outputChanneled( "bar", null );
+		$this->assertOutputPrePostShutdown( "foo\n\nbar\n", false );
+	}
+
+	function testOutputChanneledWNullChannelIntermittentFalse() {
+		$this->m->outputChanneled( "foo", null );
+		$this->m->outputChanneled( false, null );
+		$this->m->outputChanneled( "bar", null );
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testOutputChanneledWChannelIntermittentEmpty() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( "", "bazChannel" );
+		$this->m->outputChanneled( "bar", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foobar", true );
+	}
+
+	function testOutputChanneledWChannelIntermittentFalse() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->outputChanneled( false, "bazChannel" );
+		$this->m->outputChanneled( "bar", "bazChannel" );
+		$this->assertOutputPrePostShutdown( "foo\nbar", true );
+	}
+
+	function testCleanupChanneledClean() {
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "", false );
+	}
+
+	function testCleanupChanneledAfterOutput() {
+		$this->m->output( "foo" );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo", false );
+	}
+
+	function testCleanupChanneledAfterOutputWNullChannel() {
+		$this->m->output( "foo", null );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo", false );
+	}
+
+	function testCleanupChanneledAfterOutputWChannel() {
+		$this->m->output( "foo", "bazChannel" );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testCleanupChanneledAfterNLOutput() {
+		$this->m->output( "foo\n" );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testCleanupChanneledAfterNLOutputWNullChannel() {
+		$this->m->output( "foo\n", null );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testCleanupChanneledAfterNLOutputWChannel() {
+		$this->m->output( "foo\n", "bazChannel" );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testCleanupChanneledAfterOutputChanneledWOChannel() {
+		$this->m->outputChanneled( "foo" );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testCleanupChanneledAfterOutputChanneledWNullChannel() {
+		$this->m->outputChanneled( "foo", null );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testCleanupChanneledAfterOutputChanneledWChannel() {
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$this->m->cleanupChanneled();
+		$this->assertOutputPrePostShutdown( "foo\n", false );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutput() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->output( "foo" );
+		$m2->output( "bar" );
+
+		$this->assertEquals( "foobar", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutputWNullChannel() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->output( "foo", null );
+		$m2->output( "bar", null );
+
+		$this->assertEquals( "foobar", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foobar", false );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutputWChannel() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->output( "foo", "bazChannel" );
+		$m2->output( "bar", "bazChannel" );
+
+		$this->assertEquals( "foobar", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foobar\n", true );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutputWNullChannelNL() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->output( "foo\n", null );
+		$m2->output( "bar\n", null );
+
+		$this->assertEquals( "foo\nbar\n", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutputWChannelNL() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->output( "foo\n", "bazChannel" );
+		$m2->output( "bar\n", "bazChannel" );
+
+		$this->assertEquals( "foobar", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foobar\n", true );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutputChanneled() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->outputChanneled( "foo" );
+		$m2->outputChanneled( "bar" );
+
+		$this->assertEquals( "foo\nbar\n", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutputChanneledWNullChannel() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->outputChanneled( "foo", null );
+		$m2->outputChanneled( "bar", null );
+
+		$this->assertEquals( "foo\nbar\n", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foo\nbar\n", false );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionOutputChanneledWChannel() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$m2->outputChanneled( "bar", "bazChannel" );
+
+		$this->assertEquals( "foobar", $this->getActualOutput(),
+			"Output before shutdown simulation (m2)" );
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foobar\n", true );
+	}
+
+	function testMultipleMaintenanceObjectsInteractionCleanupChanneledWChannel() {
+		$m2 = new MaintenanceFixup( $this );
+
+		$this->m->outputChanneled( "foo", "bazChannel" );
+		$m2->outputChanneled( "bar", "bazChannel" );
+
+		$this->assertEquals( "foobar", $this->getActualOutput(),
+			"Output before first cleanup" );
+		$this->m->cleanupChanneled();
+		$this->assertEquals( "foobar\n", $this->getActualOutput(),
+			"Output after first cleanup" );
+		$m2->cleanupChanneled();
+		$this->assertEquals( "foobar\n\n", $this->getActualOutput(),
+			"Output after second cleanup" );
+
+		$m2->simulateShutdown();
+		$this->assertOutputPrePostShutdown( "foobar\n\n", false );
+	}
+
+
+}
diff --git a/tests/phpunit/maintenance/backupPrefetchTest.php b/tests/phpunit/maintenance/backupPrefetchTest.php
new file mode 100644
index 00000000..cc00e6e5
--- /dev/null
+++ b/tests/phpunit/maintenance/backupPrefetchTest.php
@@ -0,0 +1,278 @@
+<?php
+
+require_once __DIR__ . "/../../../maintenance/backupPrefetch.inc";
+
+/**
+ * Tests for BaseDump
+ *
+ * @group Dump
+ */
+class BaseDumpTest extends MediaWikiTestCase {
+
+	/**
+	 * @var BaseDump the BaseDump instance used within a test.
+	 *
+	 * If set, this BaseDump gets automatically closed in tearDown.
+	 */
+	private $dump = null;
+
+	protected function tearDown() {
+		if ( $this->dump !== null ) {
+			$this->dump->close();
+		}
+
+		// Bug 37458, parent teardown need to be done after closing the
+		// dump or it might cause some permissions errors.
+		parent::tearDown();
+	}
+
+	/**
+	 * asserts that a prefetch yields an expected string
+	 *
+	 * @param $expected string|null: the exepcted result of the prefetch
+	 * @param $page int: the page number to prefetch the text for
+	 * @param $revision int: the revision number to prefetch the text for
+	 */
+	private function assertPrefetchEquals( $expected, $page, $revision ) {
+		$this->assertEquals( $expected, $this->dump->prefetch( $page, $revision ),
+			"Prefetch of page $page revision $revision" );
+
+	}
+
+	function testSequential() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP1Text1", 1, 1 );
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text4 some additional Text", 2, 5 );
+		$this->assertPrefetchEquals( "Talk about BackupDumperTestP1 Text1", 4, 8 );
+	}
+
+	function testSynchronizeRevisionMissToRevision() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+		$this->assertPrefetchEquals( null, 2, 3 );
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text4 some additional Text", 2, 5 );
+	}
+
+	function testSynchronizeRevisionMissToPage() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+		$this->assertPrefetchEquals( null, 2, 40 );
+		$this->assertPrefetchEquals( "Talk about BackupDumperTestP1 Text1", 4, 8 );
+	}
+
+	function testSynchronizePageMiss() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+		$this->assertPrefetchEquals( null, 3, 40 );
+		$this->assertPrefetchEquals( "Talk about BackupDumperTestP1 Text1", 4, 8 );
+	}
+
+	function testPageMissAtEnd() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+		$this->assertPrefetchEquals( null, 6, 40 );
+	}
+
+	function testRevisionMissAtEnd() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+		$this->assertPrefetchEquals( null, 4, 40 );
+	}
+
+	function testSynchronizePageMissAtStart() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( null, 0, 2 );
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+	}
+
+	function testSynchronizeRevisionMissAtStart() {
+		$fname = $this->setUpPrefetch();
+		$this->dump = new BaseDump( $fname );
+
+		$this->assertPrefetchEquals( null, 1, -2 );
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+	}
+
+	function testSequentialAcrossFiles() {
+		$fname1 = $this->setUpPrefetch( array( 1 ) );
+		$fname2 = $this->setUpPrefetch( array( 2, 4 ) );
+		$this->dump = new BaseDump( $fname1 . ";" . $fname2 );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP1Text1", 1, 1 );
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text4 some additional Text", 2, 5 );
+		$this->assertPrefetchEquals( "Talk about BackupDumperTestP1 Text1", 4, 8 );
+	}
+
+	function testSynchronizeSkipAcrossFile() {
+		$fname1 = $this->setUpPrefetch( array( 1 ) );
+		$fname2 = $this->setUpPrefetch( array( 2 ) );
+		$fname3 = $this->setUpPrefetch( array( 4 ) );
+		$this->dump = new BaseDump( $fname1 . ";" . $fname2 . ";" . $fname3 );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP1Text1", 1, 1 );
+		$this->assertPrefetchEquals( "Talk about BackupDumperTestP1 Text1", 4, 8 );
+	}
+
+	function testSynchronizeMissInWholeFirstFile() {
+		$fname1 = $this->setUpPrefetch( array( 1 ) );
+		$fname2 = $this->setUpPrefetch( array( 2 ) );
+		$this->dump = new BaseDump( $fname1 . ";" . $fname2 );
+
+		$this->assertPrefetchEquals( "BackupDumperTestP2Text1", 2, 2 );
+	}
+
+
+	/**
+	 * Constructs a temporary file that can be used for prefetching
+	 *
+	 * The temporary file is removed by DumpBackup upon tearDown.
+	 *
+	 * @param $requested_pages Array The indices of the page parts that should
+	 *             go into the prefetch file. 1,2,4 are available.
+	 * @return String The file name of the created temporary file
+	 */
+	private function setUpPrefetch( $requested_pages = array( 1, 2, 4 ) ) {
+		// The file name, where we store the prepared prefetch file
+		$fname = $this->getNewTempFile();
+
+		// The header of every prefetch file
+		$header = '<mediawiki xmlns="http://www.mediawiki.org/xml/export-0.7/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.mediawiki.org/xml/export-0.7/ http://www.mediawiki.org/xml/export-0.7.xsd" version="0.7" xml:lang="en">
+  <siteinfo>
+    <sitename>wikisvn</sitename>
+    <base>http://localhost/wiki-svn/index.php/Main_Page</base>
+    <generator>MediaWiki 1.21alpha</generator>
+    <case>first-letter</case>
+    <namespaces>
+      <namespace key="-2" case="first-letter">Media</namespace>
+      <namespace key="-1" case="first-letter">Special</namespace>
+      <namespace key="0" case="first-letter" />
+      <namespace key="1" case="first-letter">Talk</namespace>
+      <namespace key="2" case="first-letter">User</namespace>
+      <namespace key="3" case="first-letter">User talk</namespace>
+      <namespace key="4" case="first-letter">Wikisvn</namespace>
+      <namespace key="5" case="first-letter">Wikisvn talk</namespace>
+      <namespace key="6" case="first-letter">File</namespace>
+      <namespace key="7" case="first-letter">File talk</namespace>
+      <namespace key="8" case="first-letter">MediaWiki</namespace>
+      <namespace key="9" case="first-letter">MediaWiki talk</namespace>
+      <namespace key="10" case="first-letter">Template</namespace>
+      <namespace key="11" case="first-letter">Template talk</namespace>
+      <namespace key="12" case="first-letter">Help</namespace>
+      <namespace key="13" case="first-letter">Help talk</namespace>
+      <namespace key="14" case="first-letter">Category</namespace>
+      <namespace key="15" case="first-letter">Category talk</namespace>
+    </namespaces>
+  </siteinfo>
+';
+
+
+		// An array holding the pages that are available for prefetch
+		$available_pages = array();
+
+		// Simple plain page
+		$available_pages[1] = '  <page>
+    <title>BackupDumperTestP1</title>
+    <ns>0</ns>
+    <id>1</id>
+    <revision>
+      <id>1</id>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP1Summary1</comment>
+      <sha1>0bolhl6ol7i6x0e7yq91gxgaan39j87</sha1>
+      <text xml:space="preserve">BackupDumperTestP1Text1</text>
+      <model name="wikitext">1</model>
+      <format mime="text/x-wiki">1</format>
+    </revision>
+  </page>
+';
+		// Page with more than one revisions. Hole in rev ids.
+		$available_pages[2] = '  <page>
+    <title>BackupDumperTestP2</title>
+    <ns>0</ns>
+    <id>2</id>
+    <revision>
+      <id>2</id>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP2Summary1</comment>
+      <sha1>jprywrymfhysqllua29tj3sc7z39dl2</sha1>
+      <text xml:space="preserve">BackupDumperTestP2Text1</text>
+      <model name="wikitext">1</model>
+      <format mime="text/x-wiki">1</format>
+    </revision>
+    <revision>
+      <id>5</id>
+      <parentid>2</parentid>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP2Summary4 extra</comment>
+      <sha1>6o1ciaxa6pybnqprmungwofc4lv00wv</sha1>
+      <text xml:space="preserve">BackupDumperTestP2Text4 some additional Text</text>
+      <model name="wikitext">1</model>
+      <format mime="text/x-wiki">1</format>
+    </revision>
+  </page>
+';
+		// Page with id higher than previous id + 1
+		$available_pages[4] = '  <page>
+    <title>Talk:BackupDumperTestP1</title>
+    <ns>1</ns>
+    <id>4</id>
+    <revision>
+      <id>8</id>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>Talk BackupDumperTestP1 Summary1</comment>
+      <sha1>nktofwzd0tl192k3zfepmlzxoax1lpe</sha1>
+      <model name="wikitext">1</model>
+      <format mime="text/x-wiki">1</format>
+      <text xml:space="preserve">Talk about BackupDumperTestP1 Text1</text>
+    </revision>
+  </page>
+';
+
+		// The common ending for all files
+		$tail = '</mediawiki>
+';
+
+		// Putting together the content of the prefetch files
+		$content = $header;
+		foreach ( $requested_pages as $i ) {
+			$this->assertTrue( array_key_exists( $i, $available_pages ),
+				"Check for availability of requested page " . $i );
+			$content .= $available_pages[$i];
+		}
+		$content .= $tail;
+
+		$this->assertEquals( strlen( $content ), file_put_contents(
+			$fname, $content ), "Length of prepared prefetch" );
+
+		return $fname;
+	}
+
+}
diff --git a/tests/phpunit/maintenance/backupTextPassTest.php b/tests/phpunit/maintenance/backupTextPassTest.php
new file mode 100644
index 00000000..09623445
--- /dev/null
+++ b/tests/phpunit/maintenance/backupTextPassTest.php
@@ -0,0 +1,584 @@
+<?php
+
+require_once __DIR__ . "/../../../maintenance/backupTextPass.inc";
+
+/**
+ * Tests for page dumps of BackupDumper
+ *
+ * @group Database
+ * @group Dump
+ */
+class TextPassDumperTest extends DumpTestCase {
+
+	// We'll add several pages, revision and texts. The following variables hold the
+	// corresponding ids.
+	private $pageId1, $pageId2, $pageId3, $pageId4;
+	private static $numOfPages = 4;
+	private $revId1_1, $textId1_1;
+	private $revId2_1, $textId2_1, $revId2_2, $textId2_2;
+	private $revId2_3, $textId2_3, $revId2_4, $textId2_4;
+	private $revId3_1, $textId3_1, $revId3_2, $textId3_2;
+	private $revId4_1, $textId4_1;
+	private static $numOfRevs = 8;
+
+	function addDBData() {
+		$this->tablesUsed[] = 'page';
+		$this->tablesUsed[] = 'revision';
+		$this->tablesUsed[] = 'text';
+
+		$ns = $this->getDefaultWikitextNS();
+
+		try {
+			// Simple page
+			$title = Title::newFromText( 'BackupDumperTestP1', $ns );
+			$page = WikiPage::factory( $title );
+			list( $this->revId1_1, $this->textId1_1 ) = $this->addRevision( $page,
+				"BackupDumperTestP1Text1", "BackupDumperTestP1Summary1" );
+			$this->pageId1 = $page->getId();
+
+			// Page with more than one revision
+			$title = Title::newFromText( 'BackupDumperTestP2', $ns );
+			$page = WikiPage::factory( $title );
+			list( $this->revId2_1, $this->textId2_1 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text1", "BackupDumperTestP2Summary1" );
+			list( $this->revId2_2, $this->textId2_2 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text2", "BackupDumperTestP2Summary2" );
+			list( $this->revId2_3, $this->textId2_3 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text3", "BackupDumperTestP2Summary3" );
+			list( $this->revId2_4, $this->textId2_4 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text4 some additional Text  ",
+				"BackupDumperTestP2Summary4 extra " );
+			$this->pageId2 = $page->getId();
+
+			// Deleted page.
+			$title = Title::newFromText( 'BackupDumperTestP3', $ns );
+			$page = WikiPage::factory( $title );
+			list( $this->revId3_1, $this->textId3_1 ) = $this->addRevision( $page,
+				"BackupDumperTestP3Text1", "BackupDumperTestP2Summary1" );
+			list( $this->revId3_2, $this->textId3_2 ) = $this->addRevision( $page,
+				"BackupDumperTestP3Text2", "BackupDumperTestP2Summary2" );
+			$this->pageId3 = $page->getId();
+			$page->doDeleteArticle( "Testing ;)" );
+
+			// Page from non-default namespace
+
+			if ( $ns === NS_TALK ) {
+				//@todo: work around this.
+				throw new MWException( "The default wikitext namespace is the talk namespace. "
+					. " We can't currently deal with that." );
+			}
+
+			$title = Title::newFromText( 'BackupDumperTestP1', NS_TALK );
+			$page = WikiPage::factory( $title );
+			list( $this->revId4_1, $this->textId4_1 ) = $this->addRevision( $page,
+				"Talk about BackupDumperTestP1 Text1",
+				"Talk BackupDumperTestP1 Summary1" );
+			$this->pageId4 = $page->getId();
+		} catch ( Exception $e ) {
+			// We'd love to pass $e directly. However, ... see
+			// documentation of exceptionFromAddDBData in
+			// DumpTestCase
+			$this->exceptionFromAddDBData = $e;
+		}
+
+	}
+
+	protected function setUp() {
+		parent::setUp();
+
+		// Since we will restrict dumping by page ranges (to allow
+		// working tests, even if the db gets prepopulated by a base
+		// class), we have to assert, that the page id are consecutively
+		// increasing
+		$this->assertEquals(
+			array( $this->pageId2, $this->pageId3, $this->pageId4 ),
+			array( $this->pageId1 + 1, $this->pageId2 + 1, $this->pageId3 + 1 ),
+			"Page ids increasing without holes" );
+
+	}
+
+	function testPlain() {
+		// Setting up the dump
+		$nameStub = $this->setUpStub();
+		$nameFull = $this->getNewTempFile();
+		$dumper = new TextPassDumper( array( "--stub=file:" . $nameStub,
+			"--output=file:" . $nameFull ) );
+		$dumper->reporting = false;
+		$dumper->setDb( $this->db );
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::FULL, WikiExporter::TEXT );
+
+		// Checking for correctness of the dumped data
+		$this->assertDumpStart( $nameFull );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, NS_MAIN, "BackupDumperTestP1" );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, false, "0bolhl6ol7i6x0e7yq91gxgaan39j87",
+			"BackupDumperTestP1Text1" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, NS_MAIN, "BackupDumperTestP2" );
+		$this->assertRevision( $this->revId2_1, "BackupDumperTestP2Summary1",
+			$this->textId2_1, false, "jprywrymfhysqllua29tj3sc7z39dl2",
+			"BackupDumperTestP2Text1" );
+		$this->assertRevision( $this->revId2_2, "BackupDumperTestP2Summary2",
+			$this->textId2_2, false, "b7vj5ks32po5m1z1t1br4o7scdwwy95",
+			"BackupDumperTestP2Text2", $this->revId2_1 );
+		$this->assertRevision( $this->revId2_3, "BackupDumperTestP2Summary3",
+			$this->textId2_3, false, "jfunqmh1ssfb8rs43r19w98k28gg56r",
+			"BackupDumperTestP2Text3", $this->revId2_2 );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, false, "6o1ciaxa6pybnqprmungwofc4lv00wv",
+			"BackupDumperTestP2Text4 some additional Text", $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, NS_TALK, "Talk:BackupDumperTestP1" );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, false, "nktofwzd0tl192k3zfepmlzxoax1lpe",
+			"Talk about BackupDumperTestP1 Text1" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+	}
+
+	function testPrefetchPlain() {
+		// The mapping between ids and text, for the hits of the prefetch mock
+		$prefetchMap = array(
+			array( $this->pageId1, $this->revId1_1, "Prefetch_________1Text1" ),
+			array( $this->pageId2, $this->revId2_3, "Prefetch_________2Text3" )
+		);
+
+		// The mock itself
+		$prefetchMock = $this->getMock( 'BaseDump', array( 'prefetch' ), array(), '', false );
+		$prefetchMock->expects( $this->exactly( 6 ) )
+			->method( 'prefetch' )
+			->will( $this->returnValueMap( $prefetchMap ) );
+
+		// Setting up of the dump
+		$nameStub = $this->setUpStub();
+		$nameFull = $this->getNewTempFile();
+		$dumper = new TextPassDumper( array( "--stub=file:"
+			. $nameStub, "--output=file:" . $nameFull ) );
+		$dumper->prefetch = $prefetchMock;
+		$dumper->reporting = false;
+		$dumper->setDb( $this->db );
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::FULL, WikiExporter::TEXT );
+
+		// Checking for correctness of the dumped data
+		$this->assertDumpStart( $nameFull );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, NS_MAIN, "BackupDumperTestP1" );
+		// Prefetch kicks in. This is still the SHA-1 of the original text,
+		// But the actual text (with different SHA-1) comes from prefetch.
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, false, "0bolhl6ol7i6x0e7yq91gxgaan39j87",
+			"Prefetch_________1Text1" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, NS_MAIN, "BackupDumperTestP2" );
+		$this->assertRevision( $this->revId2_1, "BackupDumperTestP2Summary1",
+			$this->textId2_1, false, "jprywrymfhysqllua29tj3sc7z39dl2",
+			"BackupDumperTestP2Text1" );
+		$this->assertRevision( $this->revId2_2, "BackupDumperTestP2Summary2",
+			$this->textId2_2, false, "b7vj5ks32po5m1z1t1br4o7scdwwy95",
+			"BackupDumperTestP2Text2", $this->revId2_1 );
+		// Prefetch kicks in. This is still the SHA-1 of the original text,
+		// But the actual text (with different SHA-1) comes from prefetch.
+		$this->assertRevision( $this->revId2_3, "BackupDumperTestP2Summary3",
+			$this->textId2_3, false, "jfunqmh1ssfb8rs43r19w98k28gg56r",
+			"Prefetch_________2Text3", $this->revId2_2 );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, false, "6o1ciaxa6pybnqprmungwofc4lv00wv",
+			"BackupDumperTestP2Text4 some additional Text", $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, NS_TALK, "Talk:BackupDumperTestP1" );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, false, "nktofwzd0tl192k3zfepmlzxoax1lpe",
+			"Talk about BackupDumperTestP1 Text1" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+
+	}
+
+	/**
+	 * Ensures that checkpoint dumps are used and written, by successively increasing the
+	 * stub size and dumping until the duration crosses a threshold.
+	 *
+	 * @param $checkpointFormat string: Either "file" for plain text or "gzip" for gzipped
+	 *                checkpoint files.
+	 */
+	private function checkpointHelper( $checkpointFormat = "file" ) {
+		// Getting temporary names
+		$nameStub = $this->getNewTempFile();
+		$nameOutputDir = $this->getNewTempDirectory();
+
+		$stderr = fopen( 'php://output', 'a' );
+		if ( $stderr === false ) {
+			$this->fail( "Could not open stream for stderr" );
+		}
+
+		$iterations = 32; // We'll start with that many iterations of revisions in stub
+		$lastDuration = 0;
+		$minDuration = 2; // We want the dump to take at least this many seconds
+		$checkpointAfter = 0.5; // Generate checkpoint after this many seconds
+
+
+		// Until a dump takes at least $minDuration seconds, perform a dump and check
+		// duration. If the dump did not take long enough increase the iteration
+		// count, to generate a bigger stub file next time.
+		while ( $lastDuration < $minDuration ) {
+
+			// Setting up the dump
+			wfRecursiveRemoveDir( $nameOutputDir );
+			$this->assertTrue( wfMkdirParents( $nameOutputDir ),
+				"Creating temporary output directory " );
+			$this->setUpStub( $nameStub, $iterations );
+			$dumper = new TextPassDumper( array( "--stub=file:" . $nameStub,
+				"--output=" . $checkpointFormat . ":" . $nameOutputDir . "/full",
+				"--maxtime=1" /*This is in minutes. Fixup is below*/,
+				"--checkpointfile=checkpoint-%s-%s.xml.gz" ) );
+			$dumper->setDb( $this->db );
+			$dumper->maxTimeAllowed = $checkpointAfter; // Patching maxTime from 1 minute
+			$dumper->stderr = $stderr;
+
+			// The actual dump and taking time
+			$ts_before = microtime( true );
+			$dumper->dump( WikiExporter::FULL, WikiExporter::TEXT );
+			$ts_after = microtime( true );
+			$lastDuration = $ts_after - $ts_before;
+
+			// Handling increasing the iteration count for the stubs
+			if ( $lastDuration < $minDuration ) {
+				$old_iterations = $iterations;
+				if ( $lastDuration > 0.2 ) {
+					// lastDuration is big enough, to allow an educated guess
+					$factor = ( $minDuration + 0.5 ) / $lastDuration;
+					if ( ( $factor > 1.1 ) && ( $factor < 100 ) ) {
+						// educated guess is reasonable
+						$iterations = (int)( $iterations * $factor );
+					}
+				}
+
+				if ( $old_iterations == $iterations ) {
+					// Heuristics were not applied, so we just *2.
+					$iterations *= 2;
+				}
+
+				$this->assertLessThan( 50000, $iterations,
+					"Emergency stop against infinitely increasing iteration "
+						. "count ( last duration: $lastDuration )" );
+			}
+		}
+
+		// The dump (hopefully) did take long enough to produce more than one
+		// checkpoint file.
+		//
+		// We now check all the checkpoint files for validity.
+
+		$files = scandir( $nameOutputDir );
+		$this->assertTrue( asort( $files ), "Sorting files in temporary directory" );
+		$fileOpened = false;
+		$lookingForPage = 1;
+		$checkpointFiles = 0;
+
+		// Each run of the following loop body tries to handle exactly 1 /page/ (not
+		// iteration of stub content). $i is only increased after having treated page 4.
+		for ( $i = 0; $i < $iterations; ) {
+
+			// 1. Assuring a file is opened and ready. Skipping across header if
+			//    necessary.
+			if ( !$fileOpened ) {
+				$this->assertNotEmpty( $files, "No more existing dump files, "
+					. "but not yet all pages found" );
+				$fname = array_shift( $files );
+				while ( $fname == "." || $fname == ".." ) {
+					$this->assertNotEmpty( $files, "No more existing dump"
+						. " files, but not yet all pages found" );
+					$fname = array_shift( $files );
+				}
+				if ( $checkpointFormat == "gzip" ) {
+					$this->gunzip( $nameOutputDir . "/" . $fname );
+				}
+				$this->assertDumpStart( $nameOutputDir . "/" . $fname );
+				$fileOpened = true;
+				$checkpointFiles++;
+			}
+
+			// 2. Performing a single page check
+			switch ( $lookingForPage ) {
+				case 1:
+					// Page 1
+					$this->assertPageStart( $this->pageId1 + $i * self::$numOfPages, NS_MAIN,
+						"BackupDumperTestP1" );
+					$this->assertRevision( $this->revId1_1 + $i * self::$numOfRevs, "BackupDumperTestP1Summary1",
+						$this->textId1_1, false, "0bolhl6ol7i6x0e7yq91gxgaan39j87",
+						"BackupDumperTestP1Text1" );
+					$this->assertPageEnd();
+
+					$lookingForPage = 2;
+					break;
+
+				case 2:
+					// Page 2
+					$this->assertPageStart( $this->pageId2 + $i * self::$numOfPages, NS_MAIN,
+						"BackupDumperTestP2" );
+					$this->assertRevision( $this->revId2_1 + $i * self::$numOfRevs, "BackupDumperTestP2Summary1",
+						$this->textId2_1, false, "jprywrymfhysqllua29tj3sc7z39dl2",
+						"BackupDumperTestP2Text1" );
+					$this->assertRevision( $this->revId2_2 + $i * self::$numOfRevs, "BackupDumperTestP2Summary2",
+						$this->textId2_2, false, "b7vj5ks32po5m1z1t1br4o7scdwwy95",
+						"BackupDumperTestP2Text2", $this->revId2_1 + $i * self::$numOfRevs );
+					$this->assertRevision( $this->revId2_3 + $i * self::$numOfRevs, "BackupDumperTestP2Summary3",
+						$this->textId2_3, false, "jfunqmh1ssfb8rs43r19w98k28gg56r",
+						"BackupDumperTestP2Text3", $this->revId2_2 + $i * self::$numOfRevs );
+					$this->assertRevision( $this->revId2_4 + $i * self::$numOfRevs,
+						"BackupDumperTestP2Summary4 extra",
+						$this->textId2_4, false, "6o1ciaxa6pybnqprmungwofc4lv00wv",
+						"BackupDumperTestP2Text4 some additional Text",
+						$this->revId2_3 + $i * self::$numOfRevs );
+					$this->assertPageEnd();
+
+					$lookingForPage = 4;
+					break;
+
+				case 4:
+					// Page 4
+					$this->assertPageStart( $this->pageId4 + $i * self::$numOfPages, NS_TALK,
+						"Talk:BackupDumperTestP1" );
+					$this->assertRevision( $this->revId4_1 + $i * self::$numOfRevs,
+						"Talk BackupDumperTestP1 Summary1",
+						$this->textId4_1, false, "nktofwzd0tl192k3zfepmlzxoax1lpe",
+						"Talk about BackupDumperTestP1 Text1" );
+					$this->assertPageEnd();
+
+					$lookingForPage = 1;
+
+					// We dealt with the whole iteration.
+					$i++;
+					break;
+
+				default:
+					$this->fail( "Bad setting for lookingForPage ($lookingForPage)" );
+			}
+
+			// 3. Checking for the end of the current checkpoint file
+			if ( $this->xml->nodeType == XMLReader::END_ELEMENT
+				&& $this->xml->name == "mediawiki"
+			) {
+				$this->assertDumpEnd();
+				$fileOpened = false;
+			}
+		}
+
+		// Assuring we completely read all files ...
+		$this->assertFalse( $fileOpened, "Currently read file still open?" );
+		$this->assertEmpty( $files, "Remaining unchecked files" );
+
+		// ... and have dealt with more than one checkpoint file
+		$this->assertGreaterThan( 1, $checkpointFiles, "expected more than 1 checkpoint to have been created. Checkpoint interval is $checkpointAfter seconds, maybe your computer is too fast?" );
+
+		$this->expectETAOutput();
+	}
+
+	/**
+	 * @group large
+	 */
+	function testCheckpointPlain() {
+		$this->checkpointHelper();
+	}
+
+	/**
+	 * tests for working checkpoint generation in gzip format work.
+	 *
+	 * We keep this test in addition to the simpler self::testCheckpointPlain, as there
+	 * were once problems when the used sinks were DumpPipeOutputs.
+	 *
+	 * xmldumps-backup typically uses bzip2 instead of gzip. However, as bzip2 requires
+	 * PHP extensions, we go for gzip instead, which triggers the same relevant code
+	 * paths while still being testable on more systems.
+	 *
+	 * @group large
+	 */
+	function testCheckpointGzip() {
+		$this->checkHasGzip();
+		$this->checkpointHelper( "gzip" );
+	}
+
+
+	/**
+	 * Creates a stub file that is used for testing the text pass of dumps
+	 *
+	 * @param $fname string: (Optional) Absolute name of the file to write
+	 *           the stub into. If this parameter is null, a new temporary
+	 *           file is generated that is automatically removed upon
+	 *           tearDown.
+	 * @param $iterations integer: (Optional) specifies how often the block
+	 *           of 3 pages should go into the stub file. The page and
+	 *           revision id increase further and further, while the text
+	 *           id of the first iteration is reused. The pages and revision
+	 *           of iteration > 1 have no corresponding representation in the
+	 *           database.
+	 * @return string absolute filename of the stub
+	 */
+	private function setUpStub( $fname = null, $iterations = 1 ) {
+		if ( $fname === null ) {
+			$fname = $this->getNewTempFile();
+		}
+		$header = '<mediawiki xmlns="http://www.mediawiki.org/xml/export-0.7/" '
+			. 'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" '
+			. 'xsi:schemaLocation="http://www.mediawiki.org/xml/export-0.7/ '
+			. 'http://www.mediawiki.org/xml/export-0.7.xsd" version="0.7" xml:lang="en">
+  <siteinfo>
+    <sitename>wikisvn</sitename>
+    <base>http://localhost/wiki-svn/index.php/Main_Page</base>
+    <generator>MediaWiki 1.21alpha</generator>
+    <case>first-letter</case>
+    <namespaces>
+      <namespace key="-2" case="first-letter">Media</namespace>
+      <namespace key="-1" case="first-letter">Special</namespace>
+      <namespace key="0" case="first-letter" />
+      <namespace key="1" case="first-letter">Talk</namespace>
+      <namespace key="2" case="first-letter">User</namespace>
+      <namespace key="3" case="first-letter">User talk</namespace>
+      <namespace key="4" case="first-letter">Wikisvn</namespace>
+      <namespace key="5" case="first-letter">Wikisvn talk</namespace>
+      <namespace key="6" case="first-letter">File</namespace>
+      <namespace key="7" case="first-letter">File talk</namespace>
+      <namespace key="8" case="first-letter">MediaWiki</namespace>
+      <namespace key="9" case="first-letter">MediaWiki talk</namespace>
+      <namespace key="10" case="first-letter">Template</namespace>
+      <namespace key="11" case="first-letter">Template talk</namespace>
+      <namespace key="12" case="first-letter">Help</namespace>
+      <namespace key="13" case="first-letter">Help talk</namespace>
+      <namespace key="14" case="first-letter">Category</namespace>
+      <namespace key="15" case="first-letter">Category talk</namespace>
+    </namespaces>
+  </siteinfo>
+';
+		$tail = '</mediawiki>
+';
+
+		$content = $header;
+		$iterations = intval( $iterations );
+		for ( $i = 0; $i < $iterations; $i++ ) {
+
+			$page1 = '  <page>
+    <title>BackupDumperTestP1</title>
+    <ns>0</ns>
+    <id>' . ( $this->pageId1 + $i * self::$numOfPages ) . '</id>
+    <revision>
+      <id>' . ( $this->revId1_1 + $i * self::$numOfRevs ) . '</id>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP1Summary1</comment>
+      <sha1>0bolhl6ol7i6x0e7yq91gxgaan39j87</sha1>
+      <model>wikitext</model>
+      <format>text/x-wiki</format>
+      <text id="' . $this->textId1_1 . '" bytes="23" />
+    </revision>
+  </page>
+';
+			$page2 = '  <page>
+    <title>BackupDumperTestP2</title>
+    <ns>0</ns>
+    <id>' . ( $this->pageId2 + $i * self::$numOfPages ) . '</id>
+    <revision>
+      <id>' . ( $this->revId2_1 + $i * self::$numOfRevs ) . '</id>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP2Summary1</comment>
+      <sha1>jprywrymfhysqllua29tj3sc7z39dl2</sha1>
+      <model>wikitext</model>
+      <format>text/x-wiki</format>
+      <text id="' . $this->textId2_1 . '" bytes="23" />
+    </revision>
+    <revision>
+      <id>' . ( $this->revId2_2 + $i * self::$numOfRevs ) . '</id>
+      <parentid>' . ( $this->revId2_1 + $i * self::$numOfRevs ) . '</parentid>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP2Summary2</comment>
+      <sha1>b7vj5ks32po5m1z1t1br4o7scdwwy95</sha1>
+      <model>wikitext</model>
+      <format>text/x-wiki</format>
+      <text id="' . $this->textId2_2 . '" bytes="23" />
+    </revision>
+    <revision>
+      <id>' . ( $this->revId2_3 + $i * self::$numOfRevs ) . '</id>
+      <parentid>' . ( $this->revId2_2 + $i * self::$numOfRevs ) . '</parentid>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP2Summary3</comment>
+      <sha1>jfunqmh1ssfb8rs43r19w98k28gg56r</sha1>
+      <model>wikitext</model>
+      <format>text/x-wiki</format>
+      <text id="' . $this->textId2_3 . '" bytes="23" />
+    </revision>
+    <revision>
+      <id>' . ( $this->revId2_4 + $i * self::$numOfRevs ) . '</id>
+      <parentid>' . ( $this->revId2_3 + $i * self::$numOfRevs ) . '</parentid>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>BackupDumperTestP2Summary4 extra</comment>
+      <sha1>6o1ciaxa6pybnqprmungwofc4lv00wv</sha1>
+      <model>wikitext</model>
+      <format>text/x-wiki</format>
+      <text id="' . $this->textId2_4 . '" bytes="44" />
+    </revision>
+  </page>
+';
+			// page 3 not in stub
+
+			$page4 = '  <page>
+    <title>Talk:BackupDumperTestP1</title>
+    <ns>1</ns>
+    <id>' . ( $this->pageId4 + $i * self::$numOfPages ) . '</id>
+    <revision>
+      <id>' . ( $this->revId4_1 + $i * self::$numOfRevs ) . '</id>
+      <timestamp>2012-04-01T16:46:05Z</timestamp>
+      <contributor>
+        <ip>127.0.0.1</ip>
+      </contributor>
+      <comment>Talk BackupDumperTestP1 Summary1</comment>
+      <sha1>nktofwzd0tl192k3zfepmlzxoax1lpe</sha1>
+      <model>wikitext</model>
+      <format>text/x-wiki</format>
+      <text id="' . $this->textId4_1 . '" bytes="35" />
+    </revision>
+  </page>
+';
+			$content .= $page1 . $page2 . $page4;
+		}
+		$content .= $tail;
+		$this->assertEquals( strlen( $content ), file_put_contents(
+			$fname, $content ), "Length of prepared stub" );
+		return $fname;
+	}
+}
diff --git a/tests/phpunit/maintenance/backup_LogTest.php b/tests/phpunit/maintenance/backup_LogTest.php
new file mode 100644
index 00000000..5cf172e6
--- /dev/null
+++ b/tests/phpunit/maintenance/backup_LogTest.php
@@ -0,0 +1,230 @@
+<?php
+/**
+ * Tests for log dumps of BackupDumper
+ *
+ * @group Database
+ * @group Dump
+ */
+class BackupDumperLoggerTest extends DumpTestCase {
+
+
+	// We'll add several log entries and users for this test. The following
+	// variables hold the corresponding ids.
+	private $userId1, $userId2;
+	private $logId1, $logId2, $logId3;
+
+	/**
+	 * adds a log entry to the database.
+	 *
+	 * @param $type string: type of the log entry
+	 * @param $subtype string: subtype of the log entry
+	 * @param $user User: user that performs the logged operation
+	 * @param $ns int: number of the namespace for the entry's target's title
+	 * @param $title string: title of the entry's target
+	 * @param $comment string: comment of the log entry
+	 * @param $parameters Array: (optional) accompanying data that is attached
+	 *               to the entry
+	 *
+	 * @return int id of the added log entry
+	 */
+	private function addLogEntry( $type, $subtype, User $user, $ns, $title,
+		$comment = null, $parameters = null
+	) {
+		$logEntry = new ManualLogEntry( $type, $subtype );
+		$logEntry->setPerformer( $user );
+		$logEntry->setTarget( Title::newFromText( $title, $ns ) );
+		if ( $comment !== null ) {
+			$logEntry->setComment( $comment );
+		}
+		if ( $parameters !== null ) {
+			$logEntry->setParameters( $parameters );
+		}
+		return $logEntry->insert();
+	}
+
+	function addDBData() {
+		$this->tablesUsed[] = 'logging';
+		$this->tablesUsed[] = 'user';
+
+		try {
+			$user1 = User::newFromName( 'BackupDumperLogUserA' );
+			$this->userId1 = $user1->getId();
+			if ( $this->userId1 === 0 ) {
+				$user1->addToDatabase();
+				$this->userId1 = $user1->getId();
+			}
+			$this->assertGreaterThan( 0, $this->userId1 );
+
+			$user2 = User::newFromName( 'BackupDumperLogUserB' );
+			$this->userId2 = $user2->getId();
+			if ( $this->userId2 === 0 ) {
+				$user2->addToDatabase();
+				$this->userId2 = $user2->getId();
+			}
+			$this->assertGreaterThan( 0, $this->userId2 );
+
+			$this->logId1 = $this->addLogEntry( 'type', 'subtype',
+				$user1, NS_MAIN, "PageA" );
+			$this->assertGreaterThan( 0, $this->logId1 );
+
+			$this->logId2 = $this->addLogEntry( 'supress', 'delete',
+				$user2, NS_TALK, "PageB", "SomeComment" );
+			$this->assertGreaterThan( 0, $this->logId2 );
+
+			$this->logId3 = $this->addLogEntry( 'move', 'delete',
+				$user2, NS_MAIN, "PageA", "SomeOtherComment",
+				array( 'key1' => 1, 3 => 'value3' ) );
+			$this->assertGreaterThan( 0, $this->logId3 );
+
+		} catch ( Exception $e ) {
+			// We'd love to pass $e directly. However, ... see
+			// documentation of exceptionFromAddDBData in
+			// DumpTestCase
+			$this->exceptionFromAddDBData = $e;
+		}
+
+	}
+
+
+	/**
+	 * asserts that the xml reader is at the beginning of a log entry and skips over
+	 * it while analyzing it.
+	 *
+	 * @param $id int: id of the log entry
+	 * @param $user_name string: user name of the log entry's performer
+	 * @param $user_id int: user id of the log entry 's performer
+	 * @param $comment string|null: comment of the log entry. If null, the comment
+	 *             text is ignored.
+	 * @param $type string: type of the log entry
+	 * @param $subtype string: subtype of the log entry
+	 * @param $title string: title of the log entry's target
+	 * @param $parameters array: (optional) unserialized data accompanying the log entry
+	 */
+	private function assertLogItem( $id, $user_name, $user_id, $comment, $type,
+		$subtype, $title, $parameters = array()
+	) {
+
+		$this->assertNodeStart( "logitem" );
+		$this->skipWhitespace();
+
+		$this->assertTextNode( "id", $id );
+		$this->assertTextNode( "timestamp", false );
+
+		$this->assertNodeStart( "contributor" );
+		$this->skipWhitespace();
+		$this->assertTextNode( "username", $user_name );
+		$this->assertTextNode( "id", $user_id );
+		$this->assertNodeEnd( "contributor" );
+		$this->skipWhitespace();
+
+		if ( $comment !== null ) {
+			$this->assertTextNode( "comment", $comment );
+		}
+		$this->assertTextNode( "type", $type );
+		$this->assertTextNode( "action", $subtype );
+		$this->assertTextNode( "logtitle", $title );
+
+		$this->assertNodeStart( "params" );
+		$parameters_xml = unserialize( $this->xml->value );
+		$this->assertEquals( $parameters, $parameters_xml );
+		$this->assertTrue( $this->xml->read(), "Skipping past processed text of params" );
+		$this->assertNodeEnd( "params" );
+		$this->skipWhitespace();
+
+		$this->assertNodeEnd( "logitem" );
+		$this->skipWhitespace();
+	}
+
+	function testPlain() {
+		global $wgContLang;
+
+		// Preparing the dump
+		$fname = $this->getNewTempFile();
+		$dumper = new BackupDumper( array( "--output=file:" . $fname ) );
+		$dumper->startId = $this->logId1;
+		$dumper->endId = $this->logId3 + 1;
+		$dumper->reporting = false;
+		$dumper->setDb( $this->db );
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::LOGS, WikiExporter::TEXT );
+
+		// Analyzing the dumped data
+		$this->assertDumpStart( $fname );
+
+		$this->assertLogItem( $this->logId1, "BackupDumperLogUserA",
+			$this->userId1, null, "type", "subtype", "PageA" );
+
+		$this->assertNotNull( $wgContLang, "Content language object validation" );
+		$namespace = $wgContLang->getNsText( NS_TALK );
+		$this->assertInternalType( 'string', $namespace );
+		$this->assertGreaterThan( 0, strlen( $namespace ) );
+		$this->assertLogItem( $this->logId2, "BackupDumperLogUserB",
+			$this->userId2, "SomeComment", "supress", "delete",
+			$namespace . ":PageB" );
+
+		$this->assertLogItem( $this->logId3, "BackupDumperLogUserB",
+			$this->userId2, "SomeOtherComment", "move", "delete",
+			"PageA", array( 'key1' => 1, 3 => 'value3' ) );
+
+		$this->assertDumpEnd();
+	}
+
+	function testXmlDumpsBackupUseCaseLogging() {
+		global $wgContLang;
+
+		$this->checkHasGzip();
+
+		// Preparing the dump
+		$fname = $this->getNewTempFile();
+		$dumper = new BackupDumper( array( "--output=gzip:" . $fname,
+			"--reporting=2" ) );
+		$dumper->startId = $this->logId1;
+		$dumper->endId = $this->logId3 + 1;
+		$dumper->setDb( $this->db );
+
+		// xmldumps-backup demands reporting, although this is currently not
+		// implemented in BackupDumper, when dumping logging data. We
+		// nevertheless capture the output of the dump process already now,
+		// to be able to alert (once dumping produces reports) that this test
+		// needs updates.
+		$dumper->stderr = fopen( 'php://output', 'a' );
+		if ( $dumper->stderr === false ) {
+			$this->fail( "Could not open stream for stderr" );
+		}
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::LOGS, WikiExporter::TEXT );
+
+		$this->assertTrue( fclose( $dumper->stderr ), "Closing stderr handle" );
+
+		// Analyzing the dumped data
+		$this->gunzip( $fname );
+
+		$this->assertDumpStart( $fname );
+
+		$this->assertLogItem( $this->logId1, "BackupDumperLogUserA",
+			$this->userId1, null, "type", "subtype", "PageA" );
+
+		$this->assertNotNull( $wgContLang, "Content language object validation" );
+		$namespace = $wgContLang->getNsText( NS_TALK );
+		$this->assertInternalType( 'string', $namespace );
+		$this->assertGreaterThan( 0, strlen( $namespace ) );
+		$this->assertLogItem( $this->logId2, "BackupDumperLogUserB",
+			$this->userId2, "SomeComment", "supress", "delete",
+			$namespace . ":PageB" );
+
+		$this->assertLogItem( $this->logId3, "BackupDumperLogUserB",
+			$this->userId2, "SomeOtherComment", "move", "delete",
+			"PageA", array( 'key1' => 1, 3 => 'value3' ) );
+
+		$this->assertDumpEnd();
+
+		// Currently, no reporting is implemented. Alert via failure, once
+		// this changes.
+		// If reporting for log dumps has been implemented, please update
+		// the following statement to catch good output
+		$this->expectOutputString( '' );
+	}
+
+}
diff --git a/tests/phpunit/maintenance/backup_PageTest.php b/tests/phpunit/maintenance/backup_PageTest.php
new file mode 100644
index 00000000..07c76705
--- /dev/null
+++ b/tests/phpunit/maintenance/backup_PageTest.php
@@ -0,0 +1,408 @@
+<?php
+/**
+ * Tests for page dumps of BackupDumper
+ *
+ * @group Database
+ * @group Dump
+ */
+class BackupDumperPageTest extends DumpTestCase {
+
+	// We'll add several pages, revision and texts. The following variables hold the
+	// corresponding ids.
+	private $pageId1, $pageId2, $pageId3, $pageId4, $pageId5;
+	private $pageTitle1, $pageTitle2, $pageTitle3, $pageTitle4, $pageTitle5;
+	private $revId1_1, $textId1_1;
+	private $revId2_1, $textId2_1, $revId2_2, $textId2_2;
+	private $revId2_3, $textId2_3, $revId2_4, $textId2_4;
+	private $revId3_1, $textId3_1, $revId3_2, $textId3_2;
+	private $revId4_1, $textId4_1;
+	private $namespace, $talk_namespace;
+
+	function addDBData() {
+		// be sure, titles created here using english namespace names
+		$this->setMwGlobals( array(
+			'wgLanguageCode' => 'en',
+			'wgContLang' => Language::factory( 'en' ),
+		) );
+
+		$this->tablesUsed[] = 'page';
+		$this->tablesUsed[] = 'revision';
+		$this->tablesUsed[] = 'text';
+
+		try {
+			$this->namespace = $this->getDefaultWikitextNS();
+			$this->talk_namespace = NS_TALK;
+
+			if ( $this->namespace === $this->talk_namespace ) {
+				//@todo: work around this.
+				throw new MWException( "The default wikitext namespace is the talk namespace. "
+					. " We can't currently deal with that." );
+			}
+
+			$this->pageTitle1 = Title::newFromText( 'BackupDumperTestP1', $this->namespace );
+			$page = WikiPage::factory( $this->pageTitle1 );
+			list( $this->revId1_1, $this->textId1_1 ) = $this->addRevision( $page,
+				"BackupDumperTestP1Text1", "BackupDumperTestP1Summary1" );
+			$this->pageId1 = $page->getId();
+
+			$this->pageTitle2 = Title::newFromText( 'BackupDumperTestP2', $this->namespace );
+			$page = WikiPage::factory( $this->pageTitle2 );
+			list( $this->revId2_1, $this->textId2_1 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text1", "BackupDumperTestP2Summary1" );
+			list( $this->revId2_2, $this->textId2_2 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text2", "BackupDumperTestP2Summary2" );
+			list( $this->revId2_3, $this->textId2_3 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text3", "BackupDumperTestP2Summary3" );
+			list( $this->revId2_4, $this->textId2_4 ) = $this->addRevision( $page,
+				"BackupDumperTestP2Text4 some additional Text  ",
+				"BackupDumperTestP2Summary4 extra " );
+			$this->pageId2 = $page->getId();
+
+			$this->pageTitle3 = Title::newFromText( 'BackupDumperTestP3', $this->namespace );
+			$page = WikiPage::factory( $this->pageTitle3 );
+			list( $this->revId3_1, $this->textId3_1 ) = $this->addRevision( $page,
+				"BackupDumperTestP3Text1", "BackupDumperTestP2Summary1" );
+			list( $this->revId3_2, $this->textId3_2 ) = $this->addRevision( $page,
+				"BackupDumperTestP3Text2", "BackupDumperTestP2Summary2" );
+			$this->pageId3 = $page->getId();
+			$page->doDeleteArticle( "Testing ;)" );
+
+			$this->pageTitle4 = Title::newFromText( 'BackupDumperTestP1', $this->talk_namespace );
+			$page = WikiPage::factory( $this->pageTitle4 );
+			list( $this->revId4_1, $this->textId4_1 ) = $this->addRevision( $page,
+				"Talk about BackupDumperTestP1 Text1",
+				"Talk BackupDumperTestP1 Summary1" );
+			$this->pageId4 = $page->getId();
+		} catch ( Exception $e ) {
+			// We'd love to pass $e directly. However, ... see
+			// documentation of exceptionFromAddDBData in
+			// DumpTestCase
+			$this->exceptionFromAddDBData = $e;
+		}
+
+	}
+
+	protected function setUp() {
+		parent::setUp();
+
+		// Since we will restrict dumping by page ranges (to allow
+		// working tests, even if the db gets prepopulated by a base
+		// class), we have to assert, that the page id are consecutively
+		// increasing
+		$this->assertEquals(
+			array( $this->pageId2, $this->pageId3, $this->pageId4 ),
+			array( $this->pageId1 + 1, $this->pageId2 + 1, $this->pageId3 + 1 ),
+			"Page ids increasing without holes" );
+
+	}
+
+	function testFullTextPlain() {
+		// Preparing the dump
+		$fname = $this->getNewTempFile();
+		$dumper = new BackupDumper( array( "--output=file:" . $fname ) );
+		$dumper->startId = $this->pageId1;
+		$dumper->endId = $this->pageId4 + 1;
+		$dumper->reporting = false;
+		$dumper->setDb( $this->db );
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::FULL, WikiExporter::TEXT );
+
+		// Checking the dumped data
+		$this->assertDumpStart( $fname );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, $this->namespace, $this->pageTitle1->getPrefixedText() );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, 23, "0bolhl6ol7i6x0e7yq91gxgaan39j87",
+			"BackupDumperTestP1Text1" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, $this->namespace, $this->pageTitle2->getPrefixedText() );
+		$this->assertRevision( $this->revId2_1, "BackupDumperTestP2Summary1",
+			$this->textId2_1, 23, "jprywrymfhysqllua29tj3sc7z39dl2",
+			"BackupDumperTestP2Text1" );
+		$this->assertRevision( $this->revId2_2, "BackupDumperTestP2Summary2",
+			$this->textId2_2, 23, "b7vj5ks32po5m1z1t1br4o7scdwwy95",
+			"BackupDumperTestP2Text2", $this->revId2_1 );
+		$this->assertRevision( $this->revId2_3, "BackupDumperTestP2Summary3",
+			$this->textId2_3, 23, "jfunqmh1ssfb8rs43r19w98k28gg56r",
+			"BackupDumperTestP2Text3", $this->revId2_2 );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, 44, "6o1ciaxa6pybnqprmungwofc4lv00wv",
+			"BackupDumperTestP2Text4 some additional Text", $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, $this->talk_namespace, $this->pageTitle4->getPrefixedText() );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, 35, "nktofwzd0tl192k3zfepmlzxoax1lpe",
+			"Talk about BackupDumperTestP1 Text1" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+	}
+
+	function testFullStubPlain() {
+		// Preparing the dump
+		$fname = $this->getNewTempFile();
+		$dumper = new BackupDumper( array( "--output=file:" . $fname ) );
+		$dumper->startId = $this->pageId1;
+		$dumper->endId = $this->pageId4 + 1;
+		$dumper->reporting = false;
+		$dumper->setDb( $this->db );
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::FULL, WikiExporter::STUB );
+
+		// Checking the dumped data
+		$this->assertDumpStart( $fname );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, $this->namespace, $this->pageTitle1->getPrefixedText() );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, 23, "0bolhl6ol7i6x0e7yq91gxgaan39j87" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, $this->namespace, $this->pageTitle2->getPrefixedText() );
+		$this->assertRevision( $this->revId2_1, "BackupDumperTestP2Summary1",
+			$this->textId2_1, 23, "jprywrymfhysqllua29tj3sc7z39dl2" );
+		$this->assertRevision( $this->revId2_2, "BackupDumperTestP2Summary2",
+			$this->textId2_2, 23, "b7vj5ks32po5m1z1t1br4o7scdwwy95", false, $this->revId2_1 );
+		$this->assertRevision( $this->revId2_3, "BackupDumperTestP2Summary3",
+			$this->textId2_3, 23, "jfunqmh1ssfb8rs43r19w98k28gg56r", false, $this->revId2_2 );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, 44, "6o1ciaxa6pybnqprmungwofc4lv00wv", false, $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, $this->talk_namespace, $this->pageTitle4->getPrefixedText() );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, 35, "nktofwzd0tl192k3zfepmlzxoax1lpe" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+	}
+
+	function testCurrentStubPlain() {
+		// Preparing the dump
+		$fname = $this->getNewTempFile();
+		$dumper = new BackupDumper( array( "--output=file:" . $fname ) );
+		$dumper->startId = $this->pageId1;
+		$dumper->endId = $this->pageId4 + 1;
+		$dumper->reporting = false;
+		$dumper->setDb( $this->db );
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::CURRENT, WikiExporter::STUB );
+
+		// Checking the dumped data
+		$this->assertDumpStart( $fname );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, $this->namespace, $this->pageTitle1->getPrefixedText() );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, 23, "0bolhl6ol7i6x0e7yq91gxgaan39j87" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, $this->namespace, $this->pageTitle2->getPrefixedText() );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, 44, "6o1ciaxa6pybnqprmungwofc4lv00wv", false, $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, $this->talk_namespace, $this->pageTitle4->getPrefixedText() );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, 35, "nktofwzd0tl192k3zfepmlzxoax1lpe" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+	}
+
+	function testCurrentStubGzip() {
+		$this->checkHasGzip();
+
+		// Preparing the dump
+		$fname = $this->getNewTempFile();
+		$dumper = new BackupDumper( array( "--output=gzip:" . $fname ) );
+		$dumper->startId = $this->pageId1;
+		$dumper->endId = $this->pageId4 + 1;
+		$dumper->reporting = false;
+		$dumper->setDb( $this->db );
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::CURRENT, WikiExporter::STUB );
+
+		// Checking the dumped data
+		$this->gunzip( $fname );
+		$this->assertDumpStart( $fname );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, $this->namespace, $this->pageTitle1->getPrefixedText() );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, 23, "0bolhl6ol7i6x0e7yq91gxgaan39j87" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, $this->namespace, $this->pageTitle2->getPrefixedText() );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, 44, "6o1ciaxa6pybnqprmungwofc4lv00wv", false, $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, $this->talk_namespace, $this->pageTitle4->getPrefixedText() );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, 35, "nktofwzd0tl192k3zfepmlzxoax1lpe" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+	}
+
+
+	function testXmlDumpsBackupUseCase() {
+		// xmldumps-backup typically performs a single dump that that writes
+		// out three files
+		// * gzipped stubs of everything (meta-history)
+		// * gzipped stubs of latest revisions of all pages (meta-current)
+		// * gzipped stubs of latest revisions of all pages of namespage 0
+		//   (articles)
+		//
+		// We reproduce such a setup with our mini fixture, although we omit
+		// chunks, and all the other gimmicks of xmldumps-backup.
+		//
+		$this->checkHasGzip();
+
+		$fnameMetaHistory = $this->getNewTempFile();
+		$fnameMetaCurrent = $this->getNewTempFile();
+		$fnameArticles = $this->getNewTempFile();
+
+		$dumper = new BackupDumper( array( "--output=gzip:" . $fnameMetaHistory,
+			"--output=gzip:" . $fnameMetaCurrent, "--filter=latest",
+			"--output=gzip:" . $fnameArticles, "--filter=latest",
+			"--filter=notalk", "--filter=namespace:!NS_USER",
+			"--reporting=1000" ) );
+		$dumper->startId = $this->pageId1;
+		$dumper->endId = $this->pageId4 + 1;
+		$dumper->setDb( $this->db );
+
+		// xmldumps-backup uses reporting. We will not check the exact reported
+		// message, as they are dependent on the processing power of the used
+		// computer. We only check that reporting does not crash the dumping
+		// and that something is reported
+		$dumper->stderr = fopen( 'php://output', 'a' );
+		if ( $dumper->stderr === false ) {
+			$this->fail( "Could not open stream for stderr" );
+		}
+
+		// Performing the dump
+		$dumper->dump( WikiExporter::FULL, WikiExporter::STUB );
+
+		$this->assertTrue( fclose( $dumper->stderr ), "Closing stderr handle" );
+
+		// Checking meta-history -------------------------------------------------
+
+		$this->gunzip( $fnameMetaHistory );
+		$this->assertDumpStart( $fnameMetaHistory );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, $this->namespace, $this->pageTitle1->getPrefixedText() );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, 23, "0bolhl6ol7i6x0e7yq91gxgaan39j87" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, $this->namespace, $this->pageTitle2->getPrefixedText() );
+		$this->assertRevision( $this->revId2_1, "BackupDumperTestP2Summary1",
+			$this->textId2_1, 23, "jprywrymfhysqllua29tj3sc7z39dl2" );
+		$this->assertRevision( $this->revId2_2, "BackupDumperTestP2Summary2",
+			$this->textId2_2, 23, "b7vj5ks32po5m1z1t1br4o7scdwwy95", false, $this->revId2_1 );
+		$this->assertRevision( $this->revId2_3, "BackupDumperTestP2Summary3",
+			$this->textId2_3, 23, "jfunqmh1ssfb8rs43r19w98k28gg56r", false, $this->revId2_2 );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, 44, "6o1ciaxa6pybnqprmungwofc4lv00wv", false, $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, $this->talk_namespace, $this->pageTitle4->getPrefixedText() );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, 35, "nktofwzd0tl192k3zfepmlzxoax1lpe" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+
+		// Checking meta-current -------------------------------------------------
+
+		$this->gunzip( $fnameMetaCurrent );
+		$this->assertDumpStart( $fnameMetaCurrent );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, $this->namespace, $this->pageTitle1->getPrefixedText() );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, 23, "0bolhl6ol7i6x0e7yq91gxgaan39j87" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, $this->namespace, $this->pageTitle2->getPrefixedText() );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, 44, "6o1ciaxa6pybnqprmungwofc4lv00wv", false, $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		$this->assertPageStart( $this->pageId4, $this->talk_namespace, $this->pageTitle4->getPrefixedText() );
+		$this->assertRevision( $this->revId4_1, "Talk BackupDumperTestP1 Summary1",
+			$this->textId4_1, 35, "nktofwzd0tl192k3zfepmlzxoax1lpe" );
+		$this->assertPageEnd();
+
+		$this->assertDumpEnd();
+
+		// Checking articles -------------------------------------------------
+
+		$this->gunzip( $fnameArticles );
+		$this->assertDumpStart( $fnameArticles );
+
+		// Page 1
+		$this->assertPageStart( $this->pageId1, $this->namespace, $this->pageTitle1->getPrefixedText() );
+		$this->assertRevision( $this->revId1_1, "BackupDumperTestP1Summary1",
+			$this->textId1_1, 23, "0bolhl6ol7i6x0e7yq91gxgaan39j87" );
+		$this->assertPageEnd();
+
+		// Page 2
+		$this->assertPageStart( $this->pageId2, $this->namespace, $this->pageTitle2->getPrefixedText() );
+		$this->assertRevision( $this->revId2_4, "BackupDumperTestP2Summary4 extra",
+			$this->textId2_4, 44, "6o1ciaxa6pybnqprmungwofc4lv00wv", false, $this->revId2_3 );
+		$this->assertPageEnd();
+
+		// Page 3
+		// -> Page is marked deleted. Hence not visible
+
+		// Page 4
+		// -> Page is not in $this->namespace. Hence not visible
+
+		$this->assertDumpEnd();
+
+		$this->expectETAOutput();
+	}
+
+
+}
diff --git a/tests/phpunit/maintenance/fetchTextTest.php b/tests/phpunit/maintenance/fetchTextTest.php
new file mode 100644
index 00000000..4d1d45d6
--- /dev/null
+++ b/tests/phpunit/maintenance/fetchTextTest.php
@@ -0,0 +1,240 @@
+<?php
+
+require_once __DIR__ . "/../../../maintenance/fetchText.php";
+
+/**
+ * Mock for the input/output of FetchText
+ *
+ * FetchText internally tries to access stdin and stdout. We mock those aspects
+ * for testing.
+ */
+class SemiMockedFetchText extends FetchText {
+
+	/**
+	 * @var String|null Text to pass as stdin
+	 */
+	private $mockStdinText = null;
+
+	/**
+	 * @var bool Whether or not a text for stdin has been provided
+	 */
+	private $mockSetUp = false;
+
+	/**
+	 * @var Array Invocation counters for the mocked aspects
+	 */
+	private $mockInvocations = array( 'getStdin' => 0 );
+
+
+	/**
+	 * Data for the fake stdin
+	 *
+	 * @param $stdin String The string to be used instead of stdin
+	 */
+	function mockStdin( $stdin ) {
+		$this->mockStdinText = $stdin;
+		$this->mockSetUp = true;
+	}
+
+	/**
+	 * Gets invocation counters for mocked methods.
+	 *
+	 * @return Array An array, whose keys are function names. The corresponding values
+	 * denote the number of times the function has been invoked.
+	 */
+	function mockGetInvocations() {
+		return $this->mockInvocations;
+	}
+
+	// -----------------------------------------------------------------
+	// Mocked functions from FetchText follow.
+
+	function getStdin( $len = null ) {
+		$this->mockInvocations['getStdin']++;
+		if ( $len !== null ) {
+			throw new PHPUnit_Framework_ExpectationFailedException(
+				"Tried to get stdin with non null parameter" );
+		}
+
+		if ( !$this->mockSetUp ) {
+			throw new PHPUnit_Framework_ExpectationFailedException(
+				"Tried to get stdin before setting up rerouting" );
+		}
+
+		return fopen( 'data://text/plain,' . $this->mockStdinText, 'r' );
+	}
+
+}
+
+/**
+ * TestCase for FetchText
+ *
+ * @group Database
+ * @group Dump
+ */
+class FetchTextTest extends MediaWikiTestCase {
+
+	// We add 5 Revisions for this test. Their corresponding text id's
+	// are stored in the following 5 variables.
+	private $textId1;
+	private $textId2;
+	private $textId3;
+	private $textId4;
+	private $textId5;
+
+
+	/**
+	 * @var Exception|null As the current MediaWikiTestCase::run is not
+	 * robust enough to recover from thrown exceptions directly, we cannot
+	 * throw frow within 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.
+	 */
+	private $exceptionFromAddDBData;
+
+	/**
+	 * @var FetchText the (mocked) FetchText that is to test
+	 */
+	private $fetchText;
+
+	/**
+	 * Adds a revision to a page, while returning the resuting text's id
+	 *
+	 * @param $page WikiPage The page to add the revision to
+	 * @param $text String The revisions text
+	 * @param $text String The revisions summare
+	 *
+	 * @throws MWExcepion
+	 */
+	private function addRevision( $page, $text, $summary ) {
+		$status = $page->doEditContent( ContentHandler::makeContent( $text, $page->getTitle() ), $summary );
+		if ( $status->isGood() ) {
+			$value = $status->getValue();
+			$revision = $value['revision'];
+			$id = $revision->getTextId();
+			if ( $id > 0 ) {
+				return $id;
+			}
+		}
+		throw new MWException( "Could not determine text id" );
+	}
+
+
+	function addDBData() {
+		$this->tablesUsed[] = 'page';
+		$this->tablesUsed[] = 'revision';
+		$this->tablesUsed[] = 'text';
+
+		$wikitextNamespace = $this->getDefaultWikitextNS();
+
+		try {
+			$title = Title::newFromText( 'FetchTextTestPage1', $wikitextNamespace );
+			$page = WikiPage::factory( $title );
+			$this->textId1 = $this->addRevision( $page, "FetchTextTestPage1Text1", "FetchTextTestPage1Summary1" );
+
+			$title = Title::newFromText( 'FetchTextTestPage2', $wikitextNamespace );
+			$page = WikiPage::factory( $title );
+			$this->textId2 = $this->addRevision( $page, "FetchTextTestPage2Text1", "FetchTextTestPage2Summary1" );
+			$this->textId3 = $this->addRevision( $page, "FetchTextTestPage2Text2", "FetchTextTestPage2Summary2" );
+			$this->textId4 = $this->addRevision( $page, "FetchTextTestPage2Text3", "FetchTextTestPage2Summary3" );
+			$this->textId5 = $this->addRevision( $page, "FetchTextTestPage2Text4 some additional Text  ", "FetchTextTestPage2Summary4 extra " );
+		} catch ( Exception $e ) {
+			// We'd love to pass $e directly. However, ... see
+			// documentation of exceptionFromAddDBData
+			$this->exceptionFromAddDBData = $e;
+		}
+	}
+
+
+	protected function setUp() {
+		parent::setUp();
+
+		// Check if any Exception is stored for rethrowing from addDBData
+		if ( $this->exceptionFromAddDBData !== null ) {
+			throw $this->exceptionFromAddDBData;
+		}
+
+		$this->fetchText = new SemiMockedFetchText();
+	}
+
+
+	/**
+	 * Helper to relate FetchText's input and output
+	 */
+	private function assertFilter( $input, $expectedOutput ) {
+		$this->fetchText->mockStdin( $input );
+		$this->fetchText->execute();
+		$invocations = $this->fetchText->mockGetInvocations();
+		$this->assertEquals( 1, $invocations['getStdin'],
+			"getStdin invocation counter" );
+		$this->expectOutputString( $expectedOutput );
+	}
+
+
+	// Instead of the following functions, a data provider would be great.
+	// However, as data providers are evaluated /before/ addDBData, a data
+	// provider would not know the required ids.
+
+	function testExistingSimple() {
+		$this->assertFilter( $this->textId2,
+			$this->textId2 . "\n23\nFetchTextTestPage2Text1" );
+	}
+
+	function testExistingSimpleWithNewline() {
+		$this->assertFilter( $this->textId2 . "\n",
+			$this->textId2 . "\n23\nFetchTextTestPage2Text1" );
+	}
+
+	function testExistingSeveral() {
+		$this->assertFilter( "$this->textId1\n$this->textId5\n"
+				. "$this->textId3\n$this->textId3",
+			implode( "", array(
+				$this->textId1 . "\n23\nFetchTextTestPage1Text1",
+				$this->textId5 . "\n44\nFetchTextTestPage2Text4 "
+					. "some additional Text",
+				$this->textId3 . "\n23\nFetchTextTestPage2Text2",
+				$this->textId3 . "\n23\nFetchTextTestPage2Text2"
+			) ) );
+	}
+
+	function testEmpty() {
+		$this->assertFilter( "", null );
+	}
+
+	function testNonExisting() {
+		$this->assertFilter( $this->textId5 + 10, ( $this->textId5 + 10 ) . "\n-1\n" );
+	}
+
+	function testNegativeInteger() {
+		$this->assertFilter( "-42", "-42\n-1\n" );
+	}
+
+	function testFloatingPointNumberExisting() {
+		// float -> int -> revision
+		$this->assertFilter( $this->textId3 + 0.14159,
+			$this->textId3 . "\n23\nFetchTextTestPage2Text2" );
+	}
+
+	function testFloatingPointNumberNonExisting() {
+		$this->assertFilter( $this->textId5 + 3.14159,
+			( $this->textId5 + 3 ) . "\n-1\n" );
+	}
+
+	function testCharacters() {
+		$this->assertFilter( "abc", "0\n-1\n" );
+	}
+
+	function testMix() {
+		$this->assertFilter( "ab\n" . $this->textId4 . ".5cd\n\nefg\n" . $this->textId2
+				. "\n" . $this->textId3,
+			implode( "", array(
+				"0\n-1\n",
+				$this->textId4 . "\n23\nFetchTextTestPage2Text3",
+				"0\n-1\n",
+				"0\n-1\n",
+				$this->textId2 . "\n23\nFetchTextTestPage2Text1",
+				$this->textId3 . "\n23\nFetchTextTestPage2Text2"
+			) ) );
+	}
+
+}
diff --git a/tests/phpunit/maintenance/getSlaveServerTest.php b/tests/phpunit/maintenance/getSlaveServerTest.php
new file mode 100644
index 00000000..699571b7
--- /dev/null
+++ b/tests/phpunit/maintenance/getSlaveServerTest.php
@@ -0,0 +1,69 @@
+<?php
+
+require_once __DIR__ . "/../../../maintenance/getSlaveServer.php";
+
+/**
+ * Tests for getSlaveServer
+ *
+ * @group Database
+ */
+class GetSlaveServerTest extends MediaWikiTestCase {
+
+	/**
+	 * Yields a regular expression that matches a good DB server name
+	 *
+	 * It matches IPs or hostnames, both optionally followed by a
+	 * port specification
+	 *
+	 * @return String the regular expression
+	 */
+	private function getServerRE() {
+		if ( $this->db->getType() === 'sqlite' ) {
+			// for SQLite, only the empty string is a good server name
+			return '';
+		}
+
+		$octet = '([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])';
+		$ip = "(($octet\.){3}$octet)";
+
+		$label = '([a-zA-Z]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)';
+		$hostname = "($label(\.$label)*)";
+
+		return "($ip|$hostname)(:[0-9]{1,5})?";
+	}
+
+	function testPlain() {
+		$gss = new GetSlaveServer();
+		$gss->execute();
+
+		$this->expectOutputRegex( "/^" . self::getServerRE() . "\n$/D" );
+	}
+
+	function testXmlDumpsBackupUseCase() {
+		global $wgDBprefix;
+
+		global $argv;
+		$argv = array( null, "--globals" );
+
+		$gss = new GetSlaveServer();
+		$gss->loadParamsAndArgs();
+		$gss->execute();
+		$gss->globals();
+
+		// The main answer
+		$output = $this->getActualOutput();
+		$firstLineEndPos = strpos( $output, "\n" );
+		if ( $firstLineEndPos === false ) {
+			$this->fail( "Could not find end of first line of output" );
+		}
+		$firstLine = substr( $output, 0, $firstLineEndPos );
+		$this->assertRegExp( "/^" . self::getServerRE() . "$/D",
+			$firstLine, "DB Server" );
+
+		// xmldumps-backup relies on the wgDBprefix in the output.
+		$this->expectOutputRegex( "/^[[:space:]]*\[wgDBprefix\][[:space:]]*=> "
+			. $wgDBprefix . "$/m" );
+	}
+
+
+}