/**
* @Given /^I should verify the file "([^"]*)" exists$/
*/
public function iShouldVerifyTheFileExists($filename)
{
$fid = FeatureHelp::getEntityID('file', $filename);
$result = db_select('file_usage', 'fu')->fields('fu')->condition('fu.module', 'os_files')->condition('fu.fid', $fid)->execute()->fetchAssoc();
if (empty($result)) {
throw new Exception(sprintf("No file usage was found for the file %s", $filename));
}
}