/**
* Checks the validity of a given stream wrapper scheme
*
* Confirms that there is a registered stream handler for the given
* scheme and that it is callable. This is useful if you want to confirm
* a valid scheme without creating a new instance of the registered
* wrapper.
*
* @param string $scheme
* the stream scheme.
* @return bool
* true if the scheme is valid, or false if the scheme does not have
* a registered handler.
*
* @access public
* @static
* @since 1.0.0
*/
public static function scheme_valid($scheme)
{
$class_name = WP_Stream::wrapper_class_name($scheme);
if (class_exists($class_name)) {
return true;
} else {
return false;
}
}
/**
* Tests getting the wrapper class name
*
* Tests WP_Stream::wrapper_class_name()
*/
public function test_wrapper_class_name()
{
$scheme = 'test';
$expected = 'WP_Test_Stream_Wrapper';
$actual = WP_Stream::wrapper_class_name($scheme);
$this->assertEquals($expected, $actual, "WP_Stream::wrapper_class_name returned '{$actual}' instead of the expected '{$expected}'");
}
/**
* Tests setting and getting URI
*
* Tests the $uri attribute of
*/
public function test_uri_attribute()
{
$uri = 'test://testfile.txt';
$scheme = WP_Stream::scheme($uri);
$class_name = WP_Stream::wrapper_class_name($scheme);
$instance = WP_Stream::new_wrapper_instance($uri);
$this->assertEquals($uri, $instance->get_uri());
$new_uri = 'test://testfile2.txt';
$instance->set_uri($new_uri);
$this->assertEquals($new_uri, $instance->get_uri());
}
