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[autoinstallsdev/mediawiki.git] / tests / phpunit / includes / GlobalFunctions / GlobalTest.php
diff --git a/tests/phpunit/includes/GlobalFunctions/GlobalTest.php b/tests/phpunit/includes/GlobalFunctions/GlobalTest.php
new file mode 100644 (file)
index 0000000..5e54b8d
--- /dev/null
@@ -0,0 +1,773 @@
+<?php
+
+/**
+ * @group Database
+ * @group GlobalFunctions
+ */
+class GlobalTest extends MediaWikiTestCase {
+       protected function setUp() {
+               parent::setUp();
+
+               $readOnlyFile = $this->getNewTempFile();
+               unlink( $readOnlyFile );
+
+               $this->setMwGlobals( [
+                       'wgReadOnlyFile' => $readOnlyFile,
+                       'wgUrlProtocols' => [
+                               'http://',
+                               'https://',
+                               'mailto:',
+                               '//',
+                               'file://', # Non-default
+                       ],
+               ] );
+       }
+
+       /**
+        * @dataProvider provideForWfArrayDiff2
+        * @covers ::wfArrayDiff2
+        */
+       public function testWfArrayDiff2( $a, $b, $expected ) {
+               $this->assertEquals(
+                       wfArrayDiff2( $a, $b ), $expected
+               );
+       }
+
+       // @todo Provide more tests
+       public static function provideForWfArrayDiff2() {
+               // $a $b $expected
+               return [
+                       [
+                               [ 'a', 'b' ],
+                               [ 'a', 'b' ],
+                               [],
+                       ],
+                       [
+                               [ [ 'a' ], [ 'a', 'b', 'c' ] ],
+                               [ [ 'a' ], [ 'a', 'b' ] ],
+                               [ 1 => [ 'a', 'b', 'c' ] ],
+                       ],
+               ];
+       }
+
+       /*
+        * Test cases for random functions could hypothetically fail,
+        * even though they shouldn't.
+        */
+
+       /**
+        * @covers ::wfRandom
+        */
+       public function testRandom() {
+               $this->assertFalse(
+                       wfRandom() == wfRandom()
+               );
+       }
+
+       /**
+        * @covers ::wfRandomString
+        */
+       public function testRandomString() {
+               $this->assertFalse(
+                       wfRandomString() == wfRandomString()
+               );
+               $this->assertEquals(
+                       strlen( wfRandomString( 10 ) ), 10
+               );
+               $this->assertTrue(
+                       preg_match( '/^[0-9a-f]+$/i', wfRandomString() ) === 1
+               );
+       }
+
+       /**
+        * @covers ::wfUrlencode
+        */
+       public function testUrlencode() {
+               $this->assertEquals(
+                       "%E7%89%B9%E5%88%A5:Contributions/Foobar",
+                       wfUrlencode( "\xE7\x89\xB9\xE5\x88\xA5:Contributions/Foobar" ) );
+       }
+
+       /**
+        * @covers ::wfExpandIRI
+        */
+       public function testExpandIRI() {
+               $this->assertEquals(
+                       "https://te.wikibooks.org/wiki/ఉబుంటు_వాడుకరి_మార్గదర్శని",
+                       wfExpandIRI( "https://te.wikibooks.org/wiki/"
+                               . "%E0%B0%89%E0%B0%AC%E0%B1%81%E0%B0%82%E0%B0%9F%E0%B1%81_"
+                               . "%E0%B0%B5%E0%B0%BE%E0%B0%A1%E0%B1%81%E0%B0%95%E0%B0%B0%E0%B0%BF_"
+                               . "%E0%B0%AE%E0%B0%BE%E0%B0%B0%E0%B1%8D%E0%B0%97%E0%B0%A6%E0%B0%B0"
+                               . "%E0%B1%8D%E0%B0%B6%E0%B0%A8%E0%B0%BF" ) );
+       }
+
+       /**
+        * Intended to cover the relevant bits of ServiceWiring.php, as well as GlobalFunctions.php
+        * @covers ::wfReadOnly
+        */
+       public function testReadOnlyEmpty() {
+               global $wgReadOnly;
+               $wgReadOnly = null;
+
+               MediaWiki\MediaWikiServices::getInstance()->getReadOnlyMode()->clearCache();
+               $this->assertFalse( wfReadOnly() );
+               $this->assertFalse( wfReadOnly() );
+       }
+
+       /**
+        * Intended to cover the relevant bits of ServiceWiring.php, as well as GlobalFunctions.php
+        * @covers ::wfReadOnly
+        */
+       public function testReadOnlySet() {
+               global $wgReadOnly, $wgReadOnlyFile;
+
+               $readOnlyMode = MediaWiki\MediaWikiServices::getInstance()->getReadOnlyMode();
+               $readOnlyMode->clearCache();
+
+               $f = fopen( $wgReadOnlyFile, "wt" );
+               fwrite( $f, 'Message' );
+               fclose( $f );
+               $wgReadOnly = null; # Check on $wgReadOnlyFile
+
+               $this->assertTrue( wfReadOnly() );
+               $this->assertTrue( wfReadOnly() ); # Check cached
+
+               unlink( $wgReadOnlyFile );
+               $readOnlyMode->clearCache();
+               $this->assertFalse( wfReadOnly() );
+               $this->assertFalse( wfReadOnly() );
+       }
+
+       /**
+        * This behaviour could probably be deprecated. Several extensions rely on it as of 1.29.
+        * @covers ::wfReadOnlyReason
+        */
+       public function testReadOnlyGlobalChange() {
+               $this->assertFalse( wfReadOnlyReason() );
+               $this->setMwGlobals( [
+                       'wgReadOnly' => 'reason'
+               ] );
+               $this->assertSame( 'reason', wfReadOnlyReason() );
+       }
+
+       public static function provideArrayToCGI() {
+               return [
+                       [ [], '' ], // empty
+                       [ [ 'foo' => 'bar' ], 'foo=bar' ], // string test
+                       [ [ 'foo' => '' ], 'foo=' ], // empty string test
+                       [ [ 'foo' => 1 ], 'foo=1' ], // number test
+                       [ [ 'foo' => true ], 'foo=1' ], // true test
+                       [ [ 'foo' => false ], '' ], // false test
+                       [ [ 'foo' => null ], '' ], // null test
+                       [ [ 'foo' => 'A&B=5+6@!"\'' ], 'foo=A%26B%3D5%2B6%40%21%22%27' ], // urlencoding test
+                       [
+                               [ 'foo' => 'bar', 'baz' => 'is', 'asdf' => 'qwerty' ],
+                               'foo=bar&baz=is&asdf=qwerty'
+                       ], // multi-item test
+                       [ [ 'foo' => [ 'bar' => 'baz' ] ], 'foo%5Bbar%5D=baz' ],
+                       [
+                               [ 'foo' => [ 'bar' => 'baz', 'qwerty' => 'asdf' ] ],
+                               'foo%5Bbar%5D=baz&foo%5Bqwerty%5D=asdf'
+                       ],
+                       [ [ 'foo' => [ 'bar', 'baz' ] ], 'foo%5B0%5D=bar&foo%5B1%5D=baz' ],
+                       [
+                               [ 'foo' => [ 'bar' => [ 'bar' => 'baz' ] ] ],
+                               'foo%5Bbar%5D%5Bbar%5D=baz'
+                       ],
+               ];
+       }
+
+       /**
+        * @dataProvider provideArrayToCGI
+        * @covers ::wfArrayToCgi
+        */
+       public function testArrayToCGI( $array, $result ) {
+               $this->assertEquals( $result, wfArrayToCgi( $array ) );
+       }
+
+       /**
+        * @covers ::wfArrayToCgi
+        */
+       public function testArrayToCGI2() {
+               $this->assertEquals(
+                       "baz=bar&foo=bar",
+                       wfArrayToCgi(
+                               [ 'baz' => 'bar' ],
+                               [ 'foo' => 'bar', 'baz' => 'overridden value' ] ) );
+       }
+
+       public static function provideCgiToArray() {
+               return [
+                       [ '', [] ], // empty
+                       [ 'foo=bar', [ 'foo' => 'bar' ] ], // string
+                       [ 'foo=', [ 'foo' => '' ] ], // empty string
+                       [ 'foo', [ 'foo' => '' ] ], // missing =
+                       [ 'foo=bar&qwerty=asdf', [ 'foo' => 'bar', 'qwerty' => 'asdf' ] ], // multiple value
+                       [ 'foo=A%26B%3D5%2B6%40%21%22%27', [ 'foo' => 'A&B=5+6@!"\'' ] ], // urldecoding test
+                       [ 'foo%5Bbar%5D=baz', [ 'foo' => [ 'bar' => 'baz' ] ] ],
+                       [
+                               'foo%5Bbar%5D=baz&foo%5Bqwerty%5D=asdf',
+                               [ 'foo' => [ 'bar' => 'baz', 'qwerty' => 'asdf' ] ]
+                       ],
+                       [ 'foo%5B0%5D=bar&foo%5B1%5D=baz', [ 'foo' => [ 0 => 'bar', 1 => 'baz' ] ] ],
+                       [
+                               'foo%5Bbar%5D%5Bbar%5D=baz',
+                               [ 'foo' => [ 'bar' => [ 'bar' => 'baz' ] ] ]
+                       ],
+               ];
+       }
+
+       /**
+        * @dataProvider provideCgiToArray
+        * @covers ::wfCgiToArray
+        */
+       public function testCgiToArray( $cgi, $result ) {
+               $this->assertEquals( $result, wfCgiToArray( $cgi ) );
+       }
+
+       public static function provideCgiRoundTrip() {
+               return [
+                       [ '' ],
+                       [ 'foo=bar' ],
+                       [ 'foo=' ],
+                       [ 'foo=bar&baz=biz' ],
+                       [ 'foo=A%26B%3D5%2B6%40%21%22%27' ],
+                       [ 'foo%5Bbar%5D=baz' ],
+                       [ 'foo%5B0%5D=bar&foo%5B1%5D=baz' ],
+                       [ 'foo%5Bbar%5D%5Bbar%5D=baz' ],
+               ];
+       }
+
+       /**
+        * @dataProvider provideCgiRoundTrip
+        * @covers ::wfArrayToCgi
+        */
+       public function testCgiRoundTrip( $cgi ) {
+               $this->assertEquals( $cgi, wfArrayToCgi( wfCgiToArray( $cgi ) ) );
+       }
+
+       /**
+        * @covers ::mimeTypeMatch
+        */
+       public function testMimeTypeMatch() {
+               $this->assertEquals(
+                       'text/html',
+                       mimeTypeMatch( 'text/html',
+                               [ 'application/xhtml+xml' => 1.0,
+                                       'text/html' => 0.7,
+                                       'text/plain' => 0.3 ] ) );
+               $this->assertEquals(
+                       'text/*',
+                       mimeTypeMatch( 'text/html',
+                               [ 'image/*' => 1.0,
+                                       'text/*' => 0.5 ] ) );
+               $this->assertEquals(
+                       '*/*',
+                       mimeTypeMatch( 'text/html',
+                               [ '*/*' => 1.0 ] ) );
+               $this->assertNull(
+                       mimeTypeMatch( 'text/html',
+                               [ 'image/png' => 1.0,
+                                       'image/svg+xml' => 0.5 ] ) );
+       }
+
+       /**
+        * @covers ::wfNegotiateType
+        */
+       public function testNegotiateType() {
+               $this->assertEquals(
+                       'text/html',
+                       wfNegotiateType(
+                               [ 'application/xhtml+xml' => 1.0,
+                                       'text/html' => 0.7,
+                                       'text/plain' => 0.5,
+                                       'text/*' => 0.2 ],
+                               [ 'text/html' => 1.0 ] ) );
+               $this->assertEquals(
+                       'application/xhtml+xml',
+                       wfNegotiateType(
+                               [ 'application/xhtml+xml' => 1.0,
+                                       'text/html' => 0.7,
+                                       'text/plain' => 0.5,
+                                       'text/*' => 0.2 ],
+                               [ 'application/xhtml+xml' => 1.0,
+                                       'text/html' => 0.5 ] ) );
+               $this->assertEquals(
+                       'text/html',
+                       wfNegotiateType(
+                               [ 'text/html' => 1.0,
+                                       'text/plain' => 0.5,
+                                       'text/*' => 0.5,
+                                       'application/xhtml+xml' => 0.2 ],
+                               [ 'application/xhtml+xml' => 1.0,
+                                       'text/html' => 0.5 ] ) );
+               $this->assertEquals(
+                       'text/html',
+                       wfNegotiateType(
+                               [ 'text/*' => 1.0,
+                                       'image/*' => 0.7,
+                                       '*/*' => 0.3 ],
+                               [ 'application/xhtml+xml' => 1.0,
+                                       'text/html' => 0.5 ] ) );
+               $this->assertNull(
+                       wfNegotiateType(
+                               [ 'text/*' => 1.0 ],
+                               [ 'application/xhtml+xml' => 1.0 ] ) );
+       }
+
+       /**
+        * @covers ::wfDebug
+        * @covers ::wfDebugMem
+        */
+       public function testDebugFunctionTest() {
+               $debugLogFile = $this->getNewTempFile();
+
+               $this->setMwGlobals( [
+                       'wgDebugLogFile' => $debugLogFile,
+                       #  @todo FIXME: $wgDebugTimestamps should be tested
+                       'wgDebugTimestamps' => false
+               ] );
+
+               wfDebug( "This is a normal string" );
+               $this->assertEquals( "This is a normal string\n", file_get_contents( $debugLogFile ) );
+               unlink( $debugLogFile );
+
+               wfDebug( "This is nöt an ASCII string" );
+               $this->assertEquals( "This is nöt an ASCII string\n", file_get_contents( $debugLogFile ) );
+               unlink( $debugLogFile );
+
+               wfDebug( "\00305This has böth UTF and control chars\003" );
+               $this->assertEquals(
+                       " 05This has böth UTF and control chars \n",
+                       file_get_contents( $debugLogFile )
+               );
+               unlink( $debugLogFile );
+
+               wfDebugMem();
+               $this->assertGreaterThan(
+                       1000,
+                       preg_replace( '/\D/', '', file_get_contents( $debugLogFile ) )
+               );
+               unlink( $debugLogFile );
+
+               wfDebugMem( true );
+               $this->assertGreaterThan(
+                       1000000,
+                       preg_replace( '/\D/', '', file_get_contents( $debugLogFile ) )
+               );
+               unlink( $debugLogFile );
+       }
+
+       /**
+        * @covers ::wfClientAcceptsGzip
+        */
+       public function testClientAcceptsGzipTest() {
+               $settings = [
+                       'gzip' => true,
+                       'bzip' => false,
+                       '*' => false,
+                       'compress, gzip' => true,
+                       'gzip;q=1.0' => true,
+                       'foozip' => false,
+                       'foo*zip' => false,
+                       'gzip;q=abcde' => true, // is this REALLY valid?
+                       'gzip;q=12345678.9' => true,
+                       ' gzip' => true,
+               ];
+
+               if ( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
+                       $old_server_setting = $_SERVER['HTTP_ACCEPT_ENCODING'];
+               }
+
+               foreach ( $settings as $encoding => $expect ) {
+                       $_SERVER['HTTP_ACCEPT_ENCODING'] = $encoding;
+
+                       $this->assertEquals( $expect, wfClientAcceptsGzip( true ),
+                               "'$encoding' => " . wfBoolToStr( $expect ) );
+               }
+
+               if ( isset( $old_server_setting ) ) {
+                       $_SERVER['HTTP_ACCEPT_ENCODING'] = $old_server_setting;
+               }
+       }
+
+       /**
+        * @covers ::wfPercent
+        */
+       public function testWfPercentTest() {
+               $pcts = [
+                       [ 6 / 7, '0.86%', 2, false ],
+                       [ 3 / 3, '1%' ],
+                       [ 22 / 7, '3.14286%', 5 ],
+                       [ 3 / 6, '0.5%' ],
+                       [ 1 / 3, '0%', 0 ],
+                       [ 10 / 3, '0%', -1 ],
+                       [ 3 / 4 / 5, '0.1%', 1 ],
+                       [ 6 / 7 * 8, '6.8571428571%', 10 ],
+               ];
+
+               foreach ( $pcts as $pct ) {
+                       if ( !isset( $pct[2] ) ) {
+                               $pct[2] = 2;
+                       }
+                       if ( !isset( $pct[3] ) ) {
+                               $pct[3] = true;
+                       }
+
+                       $this->assertEquals( wfPercent( $pct[0], $pct[2], $pct[3] ), $pct[1], $pct[1] );
+               }
+       }
+
+       /**
+        * test @see wfShorthandToInteger()
+        * @dataProvider provideShorthand
+        * @covers ::wfShorthandToInteger
+        */
+       public function testWfShorthandToInteger( $shorthand, $expected ) {
+               $this->assertEquals( $expected,
+                       wfShorthandToInteger( $shorthand )
+               );
+       }
+
+       public static function provideShorthand() {
+               // Syntax: [ shorthand, expected integer ]
+               return [
+                       # Null, empty ...
+                       [ '', -1 ],
+                       [ '  ', -1 ],
+                       [ null, -1 ],
+
+                       # Failures returns 0 :(
+                       [ 'ABCDEFG', 0 ],
+                       [ 'Ak', 0 ],
+
+                       # Int, strings with spaces
+                       [ 1, 1 ],
+                       [ ' 1 ', 1 ],
+                       [ 1023, 1023 ],
+                       [ ' 1023 ', 1023 ],
+
+                       # kilo, Mega, Giga
+                       [ '1k', 1024 ],
+                       [ '1K', 1024 ],
+                       [ '1m', 1024 * 1024 ],
+                       [ '1M', 1024 * 1024 ],
+                       [ '1g', 1024 * 1024 * 1024 ],
+                       [ '1G', 1024 * 1024 * 1024 ],
+
+                       # Negatives
+                       [ -1, -1 ],
+                       [ -500, -500 ],
+                       [ '-500', -500 ],
+                       [ '-1k', -1024 ],
+
+                       # Zeroes
+                       [ '0', 0 ],
+                       [ '0k', 0 ],
+                       [ '0M', 0 ],
+                       [ '0G', 0 ],
+                       [ '-0', 0 ],
+                       [ '-0k', 0 ],
+                       [ '-0M', 0 ],
+                       [ '-0G', 0 ],
+               ];
+       }
+
+       /**
+        * @param string $old Text as it was in the database
+        * @param string $mine Text submitted while user was editing
+        * @param string $yours Text submitted by the user
+        * @param bool $expectedMergeResult Whether the merge should be a success
+        * @param string $expectedText Text after merge has been completed
+        *
+        * @dataProvider provideMerge()
+        * @group medium
+        * @covers ::wfMerge
+        */
+       public function testMerge( $old, $mine, $yours, $expectedMergeResult, $expectedText ) {
+               $this->markTestSkippedIfNoDiff3();
+
+               $mergedText = null;
+               $isMerged = wfMerge( $old, $mine, $yours, $mergedText );
+
+               $msg = 'Merge should be a ';
+               $msg .= $expectedMergeResult ? 'success' : 'failure';
+               $this->assertEquals( $expectedMergeResult, $isMerged, $msg );
+
+               if ( $isMerged ) {
+                       // Verify the merged text
+                       $this->assertEquals( $expectedText, $mergedText,
+                               'is merged text as expected?' );
+               }
+       }
+
+       public static function provideMerge() {
+               $EXPECT_MERGE_SUCCESS = true;
+               $EXPECT_MERGE_FAILURE = false;
+
+               return [
+                       // #0: clean merge
+                       [
+                               // old:
+                               "one one one\n" . // trimmed
+                                       "\n" .
+                                       "two two two",
+
+                               // mine:
+                               "one one one ONE ONE\n" .
+                                       "\n" .
+                                       "two two two\n", // with tailing whitespace
+
+                               // yours:
+                               "one one one\n" .
+                                       "\n" .
+                                       "two two TWO TWO", // trimmed
+
+                               // ok:
+                               $EXPECT_MERGE_SUCCESS,
+
+                               // result:
+                               "one one one ONE ONE\n" .
+                                       "\n" .
+                                       "two two TWO TWO\n", // note: will always end in a newline
+                       ],
+
+                       // #1: conflict, fail
+                       [
+                               // old:
+                               "one one one", // trimmed
+
+                               // mine:
+                               "one one one ONE ONE\n" .
+                                       "\n" .
+                                       "bla bla\n" .
+                                       "\n", // with tailing whitespace
+
+                               // yours:
+                               "one one one\n" .
+                                       "\n" .
+                                       "two two", // trimmed
+
+                               $EXPECT_MERGE_FAILURE,
+
+                               // result:
+                               null,
+                       ],
+               ];
+       }
+
+       /**
+        * @dataProvider provideMakeUrlIndexes()
+        * @covers ::wfMakeUrlIndexes
+        */
+       public function testMakeUrlIndexes( $url, $expected ) {
+               $index = wfMakeUrlIndexes( $url );
+               $this->assertEquals( $expected, $index, "wfMakeUrlIndexes(\"$url\")" );
+       }
+
+       public static function provideMakeUrlIndexes() {
+               return [
+                       // Testcase for T30627
+                       [
+                               'https://example.org/test.cgi?id=12345',
+                               [ 'https://org.example./test.cgi?id=12345' ]
+                       ],
+                       [
+                               // mailtos are handled special
+                               // is this really right though? that final . probably belongs earlier?
+                               'mailto:wiki@wikimedia.org',
+                               [ 'mailto:org.wikimedia@wiki.' ]
+                       ],
+
+                       // file URL cases per T30627...
+                       [
+                               // three slashes: local filesystem path Unix-style
+                               'file:///whatever/you/like.txt',
+                               [ 'file://./whatever/you/like.txt' ]
+                       ],
+                       [
+                               // three slashes: local filesystem path Windows-style
+                               'file:///c:/whatever/you/like.txt',
+                               [ 'file://./c:/whatever/you/like.txt' ]
+                       ],
+                       [
+                               // two slashes: UNC filesystem path Windows-style
+                               'file://intranet/whatever/you/like.txt',
+                               [ 'file://intranet./whatever/you/like.txt' ]
+                       ],
+                       // Multiple-slash cases that can sorta work on Mozilla
+                       // if you hack it just right are kinda pathological,
+                       // and unreliable cross-platform or on IE which means they're
+                       // unlikely to appear on intranets.
+                       // Those will survive the algorithm but with results that
+                       // are less consistent.
+
+                       // protocol-relative URL cases per T31854...
+                       [
+                               '//example.org/test.cgi?id=12345',
+                               [
+                                       'http://org.example./test.cgi?id=12345',
+                                       'https://org.example./test.cgi?id=12345'
+                               ]
+                       ],
+               ];
+       }
+
+       /**
+        * @dataProvider provideWfMatchesDomainList
+        * @covers ::wfMatchesDomainList
+        */
+       public function testWfMatchesDomainList( $url, $domains, $expected, $description ) {
+               $actual = wfMatchesDomainList( $url, $domains );
+               $this->assertEquals( $expected, $actual, $description );
+       }
+
+       public static function provideWfMatchesDomainList() {
+               $a = [];
+               $protocols = [ 'HTTP' => 'http:', 'HTTPS' => 'https:', 'protocol-relative' => '' ];
+               foreach ( $protocols as $pDesc => $p ) {
+                       $a = array_merge( $a, [
+                               [
+                                       "$p//www.example.com",
+                                       [],
+                                       false,
+                                       "No matches for empty domains array, $pDesc URL"
+                               ],
+                               [
+                                       "$p//www.example.com",
+                                       [ 'www.example.com' ],
+                                       true,
+                                       "Exact match in domains array, $pDesc URL"
+                               ],
+                               [
+                                       "$p//www.example.com",
+                                       [ 'example.com' ],
+                                       true,
+                                       "Match without subdomain in domains array, $pDesc URL"
+                               ],
+                               [
+                                       "$p//www.example2.com",
+                                       [ 'www.example.com', 'www.example2.com', 'www.example3.com' ],
+                                       true,
+                                       "Exact match with other domains in array, $pDesc URL"
+                               ],
+                               [
+                                       "$p//www.example2.com",
+                                       [ 'example.com', 'example2.com', 'example3,com' ],
+                                       true,
+                                       "Match without subdomain with other domains in array, $pDesc URL"
+                               ],
+                               [
+                                       "$p//www.example4.com",
+                                       [ 'example.com', 'example2.com', 'example3,com' ],
+                                       false,
+                                       "Domain not in array, $pDesc URL"
+                               ],
+                               [
+                                       "$p//nds-nl.wikipedia.org",
+                                       [ 'nl.wikipedia.org' ],
+                                       false,
+                                       "Non-matching substring of domain, $pDesc URL"
+                               ],
+                       ] );
+               }
+
+               return $a;
+       }
+
+       /**
+        * @covers ::wfMkdirParents
+        */
+       public function testWfMkdirParents() {
+               // Should not return true if file exists instead of directory
+               $fname = $this->getNewTempFile();
+               MediaWiki\suppressWarnings();
+               $ok = wfMkdirParents( $fname );
+               MediaWiki\restoreWarnings();
+               $this->assertFalse( $ok );
+       }
+
+       /**
+        * @dataProvider provideWfShellWikiCmdList
+        * @covers ::wfShellWikiCmd
+        */
+       public function testWfShellWikiCmd( $script, $parameters, $options,
+               $expected, $description
+       ) {
+               if ( wfIsWindows() ) {
+                       // Approximation that's good enough for our purposes just now
+                       $expected = str_replace( "'", '"', $expected );
+               }
+               $actual = wfShellWikiCmd( $script, $parameters, $options );
+               $this->assertEquals( $expected, $actual, $description );
+       }
+
+       public function wfWikiID() {
+               $this->setMwGlobals( [
+                       'wgDBname' => 'example',
+                       'wgDBprefix' => '',
+               ] );
+               $this->assertEquals(
+                       wfWikiID(),
+                       'example'
+               );
+
+               $this->setMwGlobals( [
+                       'wgDBname' => 'example',
+                       'wgDBprefix' => 'mw_',
+               ] );
+               $this->assertEquals(
+                       wfWikiID(),
+                       'example-mw_'
+               );
+       }
+
+       public function testWfMemcKey() {
+               $cache = ObjectCache::getLocalClusterInstance();
+               $this->assertEquals(
+                       $cache->makeKey( 'foo', 123, 'bar' ),
+                       wfMemcKey( 'foo', 123, 'bar' )
+               );
+       }
+
+       public function testWfForeignMemcKey() {
+               $cache = ObjectCache::getLocalClusterInstance();
+               $keyspace = $this->readAttribute( $cache, 'keyspace' );
+               $this->assertEquals(
+                       wfForeignMemcKey( $keyspace, '', 'foo', 'bar' ),
+                       $cache->makeKey( 'foo', 'bar' )
+               );
+       }
+
+       public function testWfGlobalCacheKey() {
+               $cache = ObjectCache::getLocalClusterInstance();
+               $this->assertEquals(
+                       $cache->makeGlobalKey( 'foo', 123, 'bar' ),
+                       wfGlobalCacheKey( 'foo', 123, 'bar' )
+               );
+       }
+
+       public static function provideWfShellWikiCmdList() {
+               global $wgPhpCli;
+
+               return [
+                       [ 'eval.php', [ '--help', '--test' ], [],
+                               "'$wgPhpCli' 'eval.php' '--help' '--test'",
+                               "Called eval.php --help --test" ],
+                       [ 'eval.php', [ '--help', '--test space' ], [ 'php' => 'php5' ],
+                               "'php5' 'eval.php' '--help' '--test space'",
+                               "Called eval.php --help --test with php option" ],
+                       [ 'eval.php', [ '--help', '--test', 'X' ], [ 'wrapper' => 'MWScript.php' ],
+                               "'$wgPhpCli' 'MWScript.php' 'eval.php' '--help' '--test' 'X'",
+                               "Called eval.php --help --test with wrapper option" ],
+                       [
+                               'eval.php',
+                               [ '--help', '--test', 'y' ],
+                               [ 'php' => 'php5', 'wrapper' => 'MWScript.php' ],
+                               "'php5' 'MWScript.php' 'eval.php' '--help' '--test' 'y'",
+                               "Called eval.php --help --test with wrapper and php option"
+                       ],
+               ];
+       }
+       /* @todo many more! */
+}