Test the URI and target functions.
function testUriFunctions() {
$config = config('system.file');
$instance = file_stream_wrapper_get_instance_by_uri($this->scheme . '://foo');
$this
->assertEqual($this->classname, get_class($instance), 'Got correct class type for dummy URI.');
$instance = file_stream_wrapper_get_instance_by_uri('public://foo');
$this
->assertEqual('Drupal\\Core\\StreamWrapper\\PublicStream', get_class($instance), 'Got correct class type for public URI.');
// Test file_uri_target().
$this
->assertEqual(file_uri_target('public://foo/bar.txt'), 'foo/bar.txt', 'Got a valid stream target from public://foo/bar.txt.');
$this
->assertFalse(file_uri_target('foo/bar.txt'), 'foo/bar.txt is not a valid stream.');
// Test file_build_uri() and
// Drupal\Core\StreamWrapper\LocalStream::getDirectoryPath().
$this
->assertEqual(file_build_uri('foo/bar.txt'), 'public://foo/bar.txt', 'Expected scheme was added.');
$this
->assertEqual(file_stream_wrapper_get_instance_by_scheme('public')
->getDirectoryPath(), variable_get('file_public_path'), 'Expected default directory path was returned.');
$this
->assertEqual(file_stream_wrapper_get_instance_by_scheme('temporary')
->getDirectoryPath(), $config
->get('path.temporary'), 'Expected temporary directory path was returned.');
$config
->set('default_scheme', 'private')
->save();
$this
->assertEqual(file_build_uri('foo/bar.txt'), 'private://foo/bar.txt', 'Got a valid URI from foo/bar.txt.');
}