/**
* Set the identifier string.
*
* @param string $identifier A prefixed identifier.
* @throws \InvalidArgumentException If $identifier is not a valid prefixed identifier.
*/
protected function setIdentifier($identifier)
{
if (Utils::isValidVariableIdentifier($identifier)) {
$this->identifier = $identifier;
} else {
$msg = "The identifier '{$identifier}' is not a valid QTI Variable Name Identifier.";
throw new InvalidArgumentException($msg);
}
}
/**
* @dataProvider isValidVariableIdentifierProvider
*
* @param string $string
* @param boolean $expected
*/
public function testIsValidVariableIdentifier($string, $expected)
{
$this->assertSame($expected, Utils::isValidVariableIdentifier($string));
}
