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Commit 449eb842 by Carsten Brandt
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refactored message formatter

parent a577bda3
Showing with 286 additions and 393 deletions
framework/yii/i18n/FallbackMessageFormatter.php deleted 100644 → 0
<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\i18n;
use yii\base\NotSupportedException;
/**
* FallbackMessageFormatter is a fallback implementation for the PHP intl MessageFormatter that is
* used in case PHP intl extension is not installed.
*
* Do not use this class directly. Use [[MessageFormatter]] instead, which will automatically detect
* installed version of PHP intl and use the fallback if it is not installed.
*
* It is highly recommended that you install [PHP intl extension](http://php.net/manual/en/book.intl.php) if you want to use
* MessageFormatter features.
*
* This implementation only supports to following message formats:
* - plural formatting for english
* - select format
* - simple parameters
*
* The pattern also does NOT support the ['apostrophe-friendly' syntax](http://www.php.net/manual/en/messageformatter.formatmessage.php).
*
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class FallbackMessageFormatter
{
private $_locale;
private $_pattern;
private $_errorMessage = '';
private $_errorCode = 0;
/**
* Constructs a new Message Formatter
* @link http://php.net/manual/en/messageformatter.create.php
* @param string $locale The locale to use when formatting arguments
* @param string $pattern The pattern string to stick arguments into.
*/
public function __construct($locale, $pattern)
{
$this->_locale = $locale;
$this->_pattern = $pattern;
}
/**
* Constructs a new Message Formatter
* @link http://php.net/manual/en/messageformatter.create.php
* @param string $locale The locale to use when formatting arguments
* @param string $pattern The pattern string to stick arguments into.
* @return MessageFormatter The formatter object
*/
public static function create($locale, $pattern)
{
return new static($locale, $pattern);
}
/**
* Format the message
* @link http://php.net/manual/en/messageformatter.format.php
* @param array $args Arguments to insert into the format string
* @return string The formatted string, or `FALSE` if an error occurred
*/
public function format($args)
{
return static::formatMessage($this->_locale, $this->_pattern, $args);
}
/**
* Quick format message
* @link http://php.net/manual/en/messageformatter.formatmessage.php
* @param string $locale The locale to use for formatting locale-dependent parts
* @param string $pattern The pattern string to insert things into.
* @param array $args The array of values to insert into the format string
* @return string The formatted pattern string or `FALSE` if an error occurred
*/
public static function formatMessage($locale, $pattern, $args)
{
if (($tokens = static::tokenizePattern($pattern)) === false) {
return false;
}
foreach($tokens as $i => $token) {
if (is_array($token)) {
if (($tokens[$i] = static::parseToken($token, $args, $locale)) === false) {
return false;
}
}
}
return implode('', $tokens);
}
/**
* Tokenizes a pattern by separating normal text from replaceable patterns
* @param string $pattern patter to tokenize
* @return array|bool array of tokens or false on failure
*/
private static function tokenizePattern($pattern)
{
$depth = 1;
if (($start = $pos = mb_strpos($pattern, '{')) === false) {
return [$pattern];
}
$tokens = [mb_substr($pattern, 0, $pos)];
while(true) {
$open = mb_strpos($pattern, '{', $pos + 1);
$close = mb_strpos($pattern, '}', $pos + 1);
if ($open === false && $close === false) {
break;
}
if ($open === false) {
$open = mb_strlen($pattern);
}
if ($close > $open) {
$depth++;
$pos = $open;
} else {
$depth--;
$pos = $close;
}
if ($depth == 0) {
$tokens[] = explode(',', mb_substr($pattern, $start + 1, $pos - $start - 1), 3);
$start = $pos + 1;
$tokens[] = mb_substr($pattern, $start, $open - $start);
$start = $open;
}
}
if ($depth != 0) {
return false;
}
return $tokens;
}
/**
* Parses a token
* @param array $token the token to parse
* @param array $args arguments to replace
* @param string $locale the locale
* @return bool|string parsed token or false on failure
* @throws \yii\base\NotSupportedException when unsupported formatting is used.
*/
private static function parseToken($token, $args, $locale)
{
$param = trim($token[0]);
if (isset($args[$param])) {
$arg = $args[$param];
} else {
return '{' . implode(',', $token) . '}';
}
$type = isset($token[1]) ? trim($token[1]) : 'none';
switch($type)
{
case 'number':
case 'date':
case 'time':
case 'spellout':
case 'ordinal':
case 'duration':
case 'choice':
case 'selectordinal':
throw new NotSupportedException("Message format '$type' is not supported. You have to install PHP intl extension to use this feature.");
case 'none': return $arg;
case 'select':
/* http://icu-project.org/apiref/icu4c/classicu_1_1SelectFormat.html
selectStyle = (selector '{' message '}')+
*/
$select = static::tokenizePattern($token[2]);
$c = count($select);
$message = false;
for($i = 0; $i + 1 < $c; $i++) {
if (is_array($select[$i]) || !is_array($select[$i + 1])) {
return false;
}
$selector = trim($select[$i++]);
if ($message === false && $selector == 'other' || $selector == $arg) {
$message = implode(',', $select[$i]);
}
}
if ($message !== false) {
return static::formatMessage($locale, $message, $args);
}
break;
case 'plural':
/* http://icu-project.org/apiref/icu4c/classicu_1_1PluralFormat.html
pluralStyle = [offsetValue] (selector '{' message '}')+
offsetValue = "offset:" number
selector = explicitValue | keyword
explicitValue = '=' number // adjacent, no white space in between
keyword = [^[[:Pattern_Syntax:][:Pattern_White_Space:]]]+
message: see MessageFormat
*/
$plural = static::tokenizePattern($token[2]);
$c = count($plural);
$message = false;
$offset = 0;
for($i = 0; $i + 1 < $c; $i++) {
if (is_array($plural[$i]) || !is_array($plural[$i + 1])) {
return false;
}
$selector = trim($plural[$i++]);
if ($i == 1 && substr($selector, 0, 7) == 'offset:') {
$offset = (int) trim(mb_substr($selector, 7, ($pos = mb_strpos(str_replace(["\n", "\r", "\t"], ' ', $selector), ' ', 7)) - 7));
$selector = trim(mb_substr($selector, $pos + 1));
}
if ($message === false && $selector == 'other' ||
$selector[0] == '=' && (int) mb_substr($selector, 1) == $arg ||
$selector == 'zero' && $arg - $offset == 0 ||
$selector == 'one' && $arg - $offset == 1 ||
$selector == 'two' && $arg - $offset == 2
) {
$message = implode(',', str_replace('#', $arg - $offset, $plural[$i]));
}
}
if ($message !== false) {
return static::formatMessage($locale, $message, $args);
}
break;
}
return false;
}
/**
* Parse input string according to pattern
* @link http://php.net/manual/en/messageformatter.parse.php
* @param string $value The string to parse
* @return array An array containing the items extracted, or `FALSE` on error
*/
public function parse($value)
{
throw new NotSupportedException('You have to install PHP intl extension to use this feature.');
}
/**
* Quick parse input string
* @link http://php.net/manual/en/messageformatter.parsemessage.php
* @param string $locale The locale to use for parsing locale-dependent parts
* @param string $pattern The pattern with which to parse the `value`.
* @param string $source The string to parse, conforming to the `pattern`.
* @return array An array containing items extracted, or `FALSE` on error
*/
public static function parseMessage($locale, $pattern, $source)
{
throw new NotSupportedException('You have to install PHP intl extension to use this feature.');
}
/**
* Set the pattern used by the formatter
* @link http://php.net/manual/en/messageformatter.setpattern.php
* @param string $pattern The pattern string to use in this message formatter.
* @return bool `TRUE` on success or `FALSE` on failure.
*/
public function setPattern($pattern)
{
$this->_pattern = $pattern;
return true;
}
/**
* Get the pattern used by the formatter
* @link http://php.net/manual/en/messageformatter.getpattern.php
* @return string The pattern string for this message formatter
*/
public function getPattern()
{
return $this->_pattern;
}
/**
* Get the locale for which the formatter was created.
* @link http://php.net/manual/en/messageformatter.getlocale.php
* @return string The locale name
*/
public function getLocale()
{
return $this->_locale;
}
/**
* Get the error code from last operation
* @link http://php.net/manual/en/messageformatter.geterrorcode.php
* @return int The error code, one of UErrorCode values. Initial value is U_ZERO_ERROR.
*/
public function getErrorCode()
{
return $this->_errorCode;
}
/**
* Get the error text from the last operation
* @link http://php.net/manual/en/messageformatter.geterrormessage.php
* @return string Description of the last error.
*/
public function getErrorMessage()
{
return $this->_errorMessage;
}
}
if (!class_exists('MessageFormatter', false)) {
class_alias('yii\\i18n\\FallbackMessageFormatter', 'MessageFormatter');
define('YII_INTL_MESSAGE_FALLBACK', true);
}
framework/yii/i18n/I18N.php
......@@ -78,7 +78,7 @@ class I18N extends Component
}
/**
* Formats a message using using [[MessageFormatter]].
* Formats a message using [[MessageFormatter]].
*
* @param string $message the message to be formatted.
* @param array $params the parameters that will be used to replace the corresponding placeholders in the message.
......@@ -93,12 +93,8 @@ class I18N extends Component
}
if (preg_match('~{\s*[\d\w]+\s*,~u', $message)) {
$formatter = new MessageFormatter($language, $message);
if ($formatter === null) {
Yii::warning("Unable to format message in language '$language': $message.");
return $message;
}
$result = $formatter->format($params);
$formatter = new MessageFormatter();
$result = $formatter->format($language, $message, $params);
if ($result === false) {
$errorMessage = $formatter->getErrorMessage();
Yii::warning("Formatting message for language '$language' failed with error: $errorMessage. The message being formatted was: $message.");
......
framework/yii/i18n/MessageFormatter.php
......@@ -7,10 +7,8 @@
namespace yii\i18n;
if (!class_exists('MessageFormatter', false)) {
require_once(__DIR__ . '/FallbackMessageFormatter.php');
}
defined('YII_INTL_MESSAGE_FALLBACK') || define('YII_INTL_MESSAGE_FALLBACK', false);
use yii\base\Component;
use yii\base\NotSupportedException;
/**
* MessageFormatter enhances the message formatter class provided by PHP intl extension.
......@@ -25,53 +23,133 @@ defined('YII_INTL_MESSAGE_FALLBACK') || define('YII_INTL_MESSAGE_FALLBACK', fals
* However it is highly recommended that you install [PHP intl extension](http://php.net/manual/en/book.intl.php) if you want
* to use MessageFormatter features.
*
* FallbackMessageFormatter is a fallback implementation for the PHP intl MessageFormatter that is
* used in case PHP intl extension is not installed.
*
* Do not use this class directly. Use [[MessageFormatter]] instead, which will automatically detect
* installed version of PHP intl and use the fallback if it is not installed.
*
* It is highly recommended that you install [PHP intl extension](http://php.net/manual/en/book.intl.php) if you want to use
* MessageFormatter features.
*
* This implementation only supports to following message formats:
* - plural formatting for english
* - select format
* - simple parameters
*
* The pattern also does NOT support the ['apostrophe-friendly' syntax](http://www.php.net/manual/en/messageformatter.formatmessage.php).
*
* Messages that can be parsed are also not necessarily compatible with the ICU formatting method so do not expect messages that work without intl installed
* to work with intl
*
* @author Alexander Makarov <sam@rmcreative.ru>
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class MessageFormatter extends \MessageFormatter
class MessageFormatter extends Component
{
private $_errorCode = 0;
private $_errorMessage = '';
/**
* Format the message.
* Get the error text from the last operation
* @link http://php.net/manual/en/messageformatter.geterrorcode.php
* @return string Description of the last error.
*/
public function getErrorCode()
{
return $this->_errorCode;
}
/**
* Get the error text from the last operation
* @link http://php.net/manual/en/messageformatter.geterrormessage.php
* @return string Description of the last error.
*/
public function getErrorMessage()
{
return $this->_errorMessage;
}
/**
* Formats a message via ICU message format.
*
* @link http://php.net/manual/en/messageformatter.format.php
* @param array $args Arguments to insert into the format string.
* @return string|boolean The formatted string, or false if an error occurred.
* @link http://php.net/manual/en/messageformatter.formatmessage.php
* @param string $language The locale to use for formatting locale-dependent parts
* @param string $message The pattern string to insert things into.
* @param array $params The array of values to insert into the format string
* @return string|boolean The formatted pattern string or `FALSE` if an error occurred
*/
public function format($args)
public function format($language, $message, $params)
{
if ($args === []) {
return $this->getPattern();
$this->_errorCode = 0;
$this->_errorMessage = '';
if ($params === []) {
return $message;
}
if (!class_exists('MessageFormatter', false)) {
return $this->fallbackFormat($language, $message, $params);
}
if (version_compare(PHP_VERSION, '5.5.0', '<') && !YII_INTL_MESSAGE_FALLBACK) {
$pattern = self::replaceNamedArguments($this->getPattern(), $args);
$this->setPattern($pattern);
$args = array_values($args);
if (version_compare(PHP_VERSION, '5.5.0', '<')) {
$message = $this->replaceNamedArguments($message, $params);
$params = array_values($params);
}
$formatter = new \MessageFormatter($language, $message);
if ($formatter === null) {
$this->_errorMessage = "Unable to format message in language '$language'.";
return false;
}
$result = $formatter->format($params);
if ($result === false) {
$this->_errorCode = $formatter->getErrorCode();
$this->_errorMessage = $formatter->getErrorMessage();
return false;
} else {
return $result;
}
return parent::format($args);
}
/**
* Quick format message.
* Parse input string according to a message pattern
*
* @link http://php.net/manual/en/messageformatter.formatmessage.php
* @param string $locale The locale to use for formatting locale-dependent parts.
* @param string $pattern The pattern string to insert things into.
* @param array $args The array of values to insert into the format string.
* @return string|boolean The formatted pattern string or false if an error occurred.
* @link http://www.php.net/manual/en/messageformatter.parsemessage.php
* @param string $language The locale to use for formatting locale-dependent parts
* @param string $pattern The pattern with which to parse the message.
* @param array $message The message to parse, conforming to the pattern.
* @return string|boolean An array containing items extracted, or `FALSE` on error.
* @throws \yii\base\NotSupportedException when PHP intl extension is not installed.
*/
public static function formatMessage($locale, $pattern, $args)
public function parse($language, $pattern, $message)
{
if ($args === []) {
return $pattern;
$this->_errorCode = 0;
$this->_errorMessage = '';
if (!class_exists('MessageFormatter', false)) {
throw new NotSupportedException('You have to install PHP intl extension to use this feature.');
}
if (version_compare(PHP_VERSION, '5.5.0', '<') && !YII_INTL_MESSAGE_FALLBACK) {
$pattern = self::replaceNamedArguments($pattern, $args);
$args = array_values($args);
// TODO try to support named args
// if (version_compare(PHP_VERSION, '5.5.0', '<')) {
// $message = $this->replaceNamedArguments($message, $params);
// $params = array_values($params);
// }
$formatter = new \MessageFormatter($language, $pattern);
if ($formatter === null) {
$this->_errorMessage = "Unable to parse message in language '$language'.";
return false;
}
return parent::formatMessage($locale, $pattern, $args);
$result = $formatter->parse($message);
if ($result === false) {
$this->_errorCode = $formatter->getErrorCode();
$this->_errorMessage = $formatter->getErrorMessage();
return false;
} else {
return $result;
}
}
/**
......@@ -124,4 +202,155 @@ class MessageFormatter extends \MessageFormatter
}
return $pattern;
}
/**
* Fallback implementation for MessageFormatter::formatMessage
* @param string $language The locale to use for formatting locale-dependent parts
* @param string $message The pattern string to insert things into.
* @param array $params The array of values to insert into the format string
* @return string|boolean The formatted pattern string or `FALSE` if an error occurred
*/
protected function fallbackFormat($locale, $pattern, $args = [])
{
if (($tokens = $this->tokenizePattern($pattern)) === false) {
return false;
}
foreach($tokens as $i => $token) {
if (is_array($token)) {
if (($tokens[$i] = $this->parseToken($token, $args, $locale)) === false) {
return false;
}
}
}
return implode('', $tokens);
}
/**
* Tokenizes a pattern by separating normal text from replaceable patterns
* @param string $pattern patter to tokenize
* @return array|bool array of tokens or false on failure
*/
private function tokenizePattern($pattern)
{
$depth = 1;
if (($start = $pos = mb_strpos($pattern, '{')) === false) {
return [$pattern];
}
$tokens = [mb_substr($pattern, 0, $pos)];
while(true) {
$open = mb_strpos($pattern, '{', $pos + 1);
$close = mb_strpos($pattern, '}', $pos + 1);
if ($open === false && $close === false) {
break;
}
if ($open === false) {
$open = mb_strlen($pattern);
}
if ($close > $open) {
$depth++;
$pos = $open;
} else {
$depth--;
$pos = $close;
}
if ($depth == 0) {
$tokens[] = explode(',', mb_substr($pattern, $start + 1, $pos - $start - 1), 3);
$start = $pos + 1;
$tokens[] = mb_substr($pattern, $start, $open - $start);
$start = $open;
}
}
if ($depth != 0) {
return false;
}
return $tokens;
}
/**
* Parses a token
* @param array $token the token to parse
* @param array $args arguments to replace
* @param string $locale the locale
* @return bool|string parsed token or false on failure
* @throws \yii\base\NotSupportedException when unsupported formatting is used.
*/
private function parseToken($token, $args, $locale)
{
$param = trim($token[0]);
if (isset($args[$param])) {
$arg = $args[$param];
} else {
return '{' . implode(',', $token) . '}';
}
$type = isset($token[1]) ? trim($token[1]) : 'none';
switch($type)
{
case 'number':
case 'date':
case 'time':
case 'spellout':
case 'ordinal':
case 'duration':
case 'choice':
case 'selectordinal':
throw new NotSupportedException("Message format '$type' is not supported. You have to install PHP intl extension to use this feature.");
case 'none': return $arg;
case 'select':
/* http://icu-project.org/apiref/icu4c/classicu_1_1SelectFormat.html
selectStyle = (selector '{' message '}')+
*/
$select = static::tokenizePattern($token[2]);
$c = count($select);
$message = false;
for($i = 0; $i + 1 < $c; $i++) {
if (is_array($select[$i]) || !is_array($select[$i + 1])) {
return false;
}
$selector = trim($select[$i++]);
if ($message === false && $selector == 'other' || $selector == $arg) {
$message = implode(',', $select[$i]);
}
}
if ($message !== false) {
return $this->fallbackFormat($locale, $message, $args);
}
break;
case 'plural':
/* http://icu-project.org/apiref/icu4c/classicu_1_1PluralFormat.html
pluralStyle = [offsetValue] (selector '{' message '}')+
offsetValue = "offset:" number
selector = explicitValue | keyword
explicitValue = '=' number // adjacent, no white space in between
keyword = [^[[:Pattern_Syntax:][:Pattern_White_Space:]]]+
message: see MessageFormat
*/
$plural = static::tokenizePattern($token[2]);
$c = count($plural);
$message = false;
$offset = 0;
for($i = 0; $i + 1 < $c; $i++) {
if (is_array($plural[$i]) || !is_array($plural[$i + 1])) {
return false;
}
$selector = trim($plural[$i++]);
if ($i == 1 && substr($selector, 0, 7) == 'offset:') {
$offset = (int) trim(mb_substr($selector, 7, ($pos = mb_strpos(str_replace(["\n", "\r", "\t"], ' ', $selector), ' ', 7)) - 7));
$selector = trim(mb_substr($selector, $pos + 1));
}
if ($message === false && $selector == 'other' ||
$selector[0] == '=' && (int) mb_substr($selector, 1) == $arg ||
$selector == 'zero' && $arg - $offset == 0 ||
$selector == 'one' && $arg - $offset == 1 ||
$selector == 'two' && $arg - $offset == 2
) {
$message = implode(',', str_replace('#', $arg - $offset, $plural[$i]));
}
}
if ($message !== false) {
return $this->fallbackFormat($locale, $message, $args);
}
break;
}
return false;
}
}
tests/unit/framework/i18n/FallbackMessageFormatterTest.php
......@@ -7,7 +7,7 @@
namespace yiiunit\framework\i18n;
use yii\i18n\FallbackMessageFormatter;
use yii\i18n\MessageFormatter;
use yiiunit\TestCase;
/**
......@@ -115,19 +115,10 @@ _MSG_
/**
* @dataProvider patterns
*/
public function testNamedArgumentsStatic($pattern, $expected, $args)
{
$result = FallbackMessageFormatter::formatMessage('en_US', $pattern, $args);
$this->assertEquals($expected, $result);
}
/**
* @dataProvider patterns
*/
public function testNamedArgumentsObject($pattern, $expected, $args)
{
$formatter = new FallbackMessageFormatter('en_US', $pattern);
$result = $formatter->format($args);
$formatter = new FallbackMessageFormatter();
$result = $formatter->format('en_US', $pattern, $args);
$this->assertEquals($expected, $result, $formatter->getErrorMessage());
}
......@@ -135,7 +126,8 @@ _MSG_
{
$expected = '{'.self::SUBJECT.'} is '.self::N_VALUE;
$result = FallbackMessageFormatter::formatMessage('en_US', '{'.self::SUBJECT.'} is {'.self::N.'}', [
$formatter = new FallbackMessageFormatter();
$result = $formatter->format('en_US', '{'.self::SUBJECT.'} is {'.self::N.'}', [
self::N => self::N_VALUE,
]);
......@@ -145,11 +137,17 @@ _MSG_
public function testNoParams()
{
$pattern = '{'.self::SUBJECT.'} is '.self::N;
$result = FallbackMessageFormatter::formatMessage('en_US', $pattern, []);
$this->assertEquals($pattern, $result);
$formatter = new FallbackMessageFormatter('en_US', $pattern);
$result = $formatter->format([]);
$formatter = new FallbackMessageFormatter();
$result = $formatter->format('en_US', $pattern, []);
$this->assertEquals($pattern, $result, $formatter->getErrorMessage());
}
}
class FallbackMessageFormatter extends MessageFormatter
{
public function fallbackFormat($locale, $pattern, $args = [])
{
return parent::fallbackFormat($locale, $pattern, $args);
}
}
\ No newline at end of file
tests/unit/framework/i18n/MessageFormatterTest.php
......@@ -122,19 +122,10 @@ _MSG_
/**
* @dataProvider patterns
*/
public function testNamedArgumentsStatic($pattern, $expected, $args)
{
$result = MessageFormatter::formatMessage('en_US', $pattern, $args);
$this->assertEquals($expected, $result, intl_get_error_message());
}
/**
* @dataProvider patterns
*/
public function testNamedArgumentsObject($pattern, $expected, $args)
{
$formatter = new MessageFormatter('en_US', $pattern);
$result = $formatter->format($args);
$formatter = new MessageFormatter();
$result = $formatter->format('en_US', $pattern, $args);
$this->assertEquals($expected, $result, $formatter->getErrorMessage());
}
......@@ -142,36 +133,19 @@ _MSG_
{
$expected = '{'.self::SUBJECT.'} is '.self::N_VALUE;
$result = MessageFormatter::formatMessage('en_US', '{'.self::SUBJECT.'} is {'.self::N.', number}', [
$formatter = new MessageFormatter();
$result = $formatter->format('en_US', '{'.self::SUBJECT.'} is {'.self::N.', number}', [
self::N => self::N_VALUE,
]);
$this->assertEquals($expected, $result, intl_get_error_message());
}
/**
* When instantiating a MessageFormatter with invalid pattern it should be null with default settings.
* It will be IntlException if intl.use_exceptions=1 and PHP 5.5 or newer or an error if intl.error_level is not 0.
*/
public function testNullConstructor()
{
if(ini_get('intl.use_exceptions')) {
$this->setExpectedException('IntlException');
}
if (!ini_get('intl.error_level') || ini_get('intl.use_exceptions')) {
$this->assertNull(new MessageFormatter('en_US', ''));
}
$this->assertEquals($expected, $result, $formatter->getErrorMessage());
}
public function testNoParams()
{
$pattern = '{'.self::SUBJECT.'} is '.self::N;
$result = MessageFormatter::formatMessage('en_US', $pattern, []);
$this->assertEquals($pattern, $result, intl_get_error_message());
$formatter = new MessageFormatter('en_US', $pattern);
$result = $formatter->format([]);
$formatter = new MessageFormatter();
$result = $formatter->format('en_US', $pattern, []);
$this->assertEquals($pattern, $result, $formatter->getErrorMessage());
}
}
\ No newline at end of file
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