public function testSizeCallback()
{
$field = new Int(function () {
return 6;
});
$this->assertEquals(6, $field->getSize());
}
public function testValueCallback()
{
$stream = new StringStream('123abcdefgqwertyahnytjssdadfkjhb');
$field = new Int('byte', ['formatter' => function ($value) {
return $value - 2 * 8;
}]);
$this->assertEquals(33, $field->parse($stream));
}
/**
* Read key from Stream, and return value by this key or default value.
*
* @param AbstractStream $stream Stream from which resolved field reads.
* @return object|integer|double|string|array|boolean|callable Value by read key or default value if present.
* @throws InvalidKeyException If read key is not exist and default value is not presented.
*/
public function read(AbstractStream $stream)
{
$key = parent::read($stream);
$values = $this->getValues();
if (array_key_exists($key, $values)) {
$value = $values[$key];
} else {
$value = $this->getDefault();
}
if ($value === null) {
throw new InvalidKeyException("Value '{$key}' does not correspond to a valid enum key. Presented keys: '" . implode("', '", array_keys($values)) . "'");
}
return $value;
}