/**
* Tests PFXUtils::guessEncoding().
*/
public function testGuessEncoding()
{
$content = 'The ɋuick brőwn fox jumped ōver the lazy dog.';
$file = self::_createTempFile(null, $content);
$fh = fopen($file, 'r');
$this->assertEquals('UTF-8', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
fclose($fh);
// Now try an explicit UTF-8 BOM
$file = self::_createTempFile(null, "" . $content);
$fh = fopen($file, 'r');
$this->assertEquals('UTF-8', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
fclose($fh);
// UTF-16BE
$file = self::_createTempFile(null, "��" . $content);
$fh = fopen($file, 'r');
$this->assertEquals('UTF-16BE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
/* Even though we just advanced the pointer, we should still get the
same result if we do the same tests again, because the method will
rewind it for us. */
$this->assertEquals('UTF-16BE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
fclose($fh);
// UTF-16LE
$file = self::_createTempFile(null, "��" . $content);
$fh = fopen($file, 'r');
$this->assertEquals('UTF-16LE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
$this->assertEquals('UTF-16LE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
fclose($fh);
// UTF-32BE
$file = self::_createTempFile(null, "��" . $content);
$fh = fopen($file, 'r');
$this->assertEquals('UTF-32BE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
$this->assertEquals('UTF-32BE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
fclose($fh);
// UTF-32LE
$file = self::_createTempFile(null, "��" . $content);
$fh = fopen($file, 'r');
$this->assertEquals('UTF-32LE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
$this->assertEquals('UTF-32LE', PFXUtils::guessEncoding($fh));
$this->assertEquals($content, fread($fh, strlen($content)));
fclose($fh);
}
