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Diffstat (limited to 'tests/phpunit/includes/libs/StringUtilsTest.php')
| -rw-r--r-- | tests/phpunit/includes/libs/StringUtilsTest.php | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/tests/phpunit/includes/libs/StringUtilsTest.php b/tests/phpunit/includes/libs/StringUtilsTest.php new file mode 100644 index 00000000..7c24fae6 --- /dev/null +++ b/tests/phpunit/includes/libs/StringUtilsTest.php @@ -0,0 +1,149 @@ +<?php + +class StringUtilsTest extends PHPUnit_Framework_TestCase { + + /** + * This tests StringUtils::isUtf8 whenever we have the mbstring extension + * loaded. + * + * @covers StringUtils::isUtf8 + * @dataProvider provideStringsForIsUtf8Check + */ + public function testIsUtf8WithMbstring( $expected, $string ) { + if ( !function_exists( 'mb_check_encoding' ) ) { + $this->markTestSkipped( 'Test requires the mbstring PHP extension' ); + } + $this->assertEquals( $expected, + StringUtils::isUtf8( $string ), + 'Testing string "' . $this->escaped( $string ) . '" with mb_check_encoding' + ); + } + + /** + * This tests StringUtils::isUtf8 making sure we use the pure PHP + * implementation used as a fallback when mb_check_encoding() is + * not available. + * + * @covers StringUtils::isUtf8 + * @dataProvider provideStringsForIsUtf8Check + */ + public function testIsUtf8WithPhpFallbackImplementation( $expected, $string ) { + $this->assertEquals( $expected, + StringUtils::isUtf8( $string, /** disable mbstring: */true ), + 'Testing string "' . $this->escaped( $string ) . '" with pure PHP implementation' + ); + } + + /** + * Print high range characters as a hexadecimal + * @param string $string + * @return string + */ + function escaped( $string ) { + $escaped = ''; + $length = strlen( $string ); + for ( $i = 0; $i < $length; $i++ ) { + $char = $string[$i]; + $val = ord( $char ); + if ( $val > 127 ) { + $escaped .= '\x' . dechex( $val ); + } else { + $escaped .= $char; + } + } + + return $escaped; + } + + /** + * See also "UTF-8 decoder capability and stress test" by + * Markus Kuhn: + * http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt + */ + public static function provideStringsForIsUtf8Check() { + // Expected return values for StringUtils::isUtf8() + $PASS = true; + $FAIL = false; + + return array( + 'some ASCII' => array( $PASS, 'Some ASCII' ), + 'euro sign' => array( $PASS, "Euro sign €" ), + + 'first possible sequence 1 byte' => array( $PASS, "\x00" ), + 'first possible sequence 2 bytes' => array( $PASS, "\xc2\x80" ), + 'first possible sequence 3 bytes' => array( $PASS, "\xe0\xa0\x80" ), + 'first possible sequence 4 bytes' => array( $PASS, "\xf0\x90\x80\x80" ), + 'first possible sequence 5 bytes' => array( $FAIL, "\xf8\x88\x80\x80\x80" ), + 'first possible sequence 6 bytes' => array( $FAIL, "\xfc\x84\x80\x80\x80\x80" ), + + 'last possible sequence 1 byte' => array( $PASS, "\x7f" ), + 'last possible sequence 2 bytes' => array( $PASS, "\xdf\xbf" ), + 'last possible sequence 3 bytes' => array( $PASS, "\xef\xbf\xbf" ), + 'last possible sequence 4 bytes (U+1FFFFF)' => array( $FAIL, "\xf7\xbf\xbf\xbf" ), + 'last possible sequence 5 bytes' => array( $FAIL, "\xfb\xbf\xbf\xbf\xbf" ), + 'last possible sequence 6 bytes' => array( $FAIL, "\xfd\xbf\xbf\xbf\xbf\xbf" ), + + 'boundary 1' => array( $PASS, "\xed\x9f\xbf" ), + 'boundary 2' => array( $PASS, "\xee\x80\x80" ), + 'boundary 3' => array( $PASS, "\xef\xbf\xbd" ), + 'boundary 4' => array( $PASS, "\xf2\x80\x80\x80" ), + 'boundary 5 (U+FFFFF)' => array( $PASS, "\xf3\xbf\xbf\xbf" ), + 'boundary 6 (U+100000)' => array( $PASS, "\xf4\x80\x80\x80" ), + 'boundary 7 (U+10FFFF)' => array( $PASS, "\xf4\x8f\xbf\xbf" ), + 'boundary 8 (U+110000)' => array( $FAIL, "\xf4\x90\x80\x80" ), + + 'malformed 1' => array( $FAIL, "\x80" ), + 'malformed 2' => array( $FAIL, "\xbf" ), + 'malformed 3' => array( $FAIL, "\x80\xbf" ), + 'malformed 4' => array( $FAIL, "\x80\xbf\x80" ), + 'malformed 5' => array( $FAIL, "\x80\xbf\x80\xbf" ), + 'malformed 6' => array( $FAIL, "\x80\xbf\x80\xbf\x80" ), + 'malformed 7' => array( $FAIL, "\x80\xbf\x80\xbf\x80\xbf" ), + 'malformed 8' => array( $FAIL, "\x80\xbf\x80\xbf\x80\xbf\x80" ), + + 'last byte missing 1' => array( $FAIL, "\xc0" ), + 'last byte missing 2' => array( $FAIL, "\xe0\x80" ), + 'last byte missing 3' => array( $FAIL, "\xf0\x80\x80" ), + 'last byte missing 4' => array( $FAIL, "\xf8\x80\x80\x80" ), + 'last byte missing 5' => array( $FAIL, "\xfc\x80\x80\x80\x80" ), + 'last byte missing 6' => array( $FAIL, "\xdf" ), + 'last byte missing 7' => array( $FAIL, "\xef\xbf" ), + 'last byte missing 8' => array( $FAIL, "\xf7\xbf\xbf" ), + 'last byte missing 9' => array( $FAIL, "\xfb\xbf\xbf\xbf" ), + 'last byte missing 10' => array( $FAIL, "\xfd\xbf\xbf\xbf\xbf" ), + + 'extra continuation byte 1' => array( $FAIL, "e\xaf" ), + 'extra continuation byte 2' => array( $FAIL, "\xc3\x89\xaf" ), + 'extra continuation byte 3' => array( $FAIL, "\xef\xbc\xa5\xaf" ), + 'extra continuation byte 4' => array( $FAIL, "\xf0\x9d\x99\xb4\xaf" ), + + 'impossible bytes 1' => array( $FAIL, "\xfe" ), + 'impossible bytes 2' => array( $FAIL, "\xff" ), + 'impossible bytes 3' => array( $FAIL, "\xfe\xfe\xff\xff" ), + + 'overlong sequences 1' => array( $FAIL, "\xc0\xaf" ), + 'overlong sequences 2' => array( $FAIL, "\xc1\xaf" ), + 'overlong sequences 3' => array( $FAIL, "\xe0\x80\xaf" ), + 'overlong sequences 4' => array( $FAIL, "\xf0\x80\x80\xaf" ), + 'overlong sequences 5' => array( $FAIL, "\xf8\x80\x80\x80\xaf" ), + 'overlong sequences 6' => array( $FAIL, "\xfc\x80\x80\x80\x80\xaf" ), + + 'maximum overlong sequences 1' => array( $FAIL, "\xc1\xbf" ), + 'maximum overlong sequences 2' => array( $FAIL, "\xe0\x9f\xbf" ), + 'maximum overlong sequences 3' => array( $FAIL, "\xf0\x8f\xbf\xbf" ), + 'maximum overlong sequences 4' => array( $FAIL, "\xf8\x87\xbf\xbf" ), + 'maximum overlong sequences 5' => array( $FAIL, "\xfc\x83\xbf\xbf\xbf\xbf" ), + + 'surrogates 1 (U+D799)' => array( $PASS, "\xed\x9f\xbf" ), + 'surrogates 2 (U+E000)' => array( $PASS, "\xee\x80\x80" ), + 'surrogates 3 (U+D800)' => array( $FAIL, "\xed\xa0\x80" ), + 'surrogates 4 (U+DBFF)' => array( $FAIL, "\xed\xaf\xbf" ), + 'surrogates 5 (U+DC00)' => array( $FAIL, "\xed\xb0\x80" ), + 'surrogates 6 (U+DFFF)' => array( $FAIL, "\xed\xbf\xbf" ), + 'surrogates 7 (U+D800 U+DC00)' => array( $FAIL, "\xed\xa0\x80\xed\xb0\x80" ), + + 'noncharacters 1' => array( $PASS, "\xef\xbf\xbe" ), + 'noncharacters 2' => array( $PASS, "\xef\xbf\xbf" ), + ); + } +} |