function setup()
{
$this->mapper = wiFileMapperFactory::selectMapper(null, 'jpg');
}
/**
* Returns binary string with image data in format specified by $format
*/
function asString($format)
{
ob_start();
$args = func_get_args();
$args[0] = null;
array_unshift($args, $this->getHandle());
$mapper = wiFileMapperFactory::selectMapper(null, $format);
call_user_func_array(array($mapper, 'save'), $args);
return ob_get_clean();
}
function testMapperByURI()
{
$mapper = wiFileMapperFactory::selectMapper('uri.png');
$this->assertTrue($mapper instanceof wiImageFileMapper_PNG);
}