Behat - pause on step failure

behat_example_plugin.php

// Replace with your favourite way of requiring a file.
require_once(__DIR__ . '/../../../../lib/behat/behat_base.php');

use Behat\Behat\Hook\Scope\AfterStepScope;
use Behat\Testwork\Tester\Result\TestResult;

// Uncomment this line to enable the debug step.
// define('DEBUG',1);

// Make sure to rename this class (and the file!) with your plugin's namespace.
class behat_example_plugin extends behat_base {    
    /**
     * Allow debugging of behat tests by PAUSING on failure.
     * Uncomment the DEBUG define above to use it. This should really be a built in part of Behat IMO...
     * @AfterStep
     *
     * @param AfterStepScope $scope
     */
    public function wait_to_debug_in_browser_on_step_error(AfterStepScope $scope) {
        if (defined('DEBUG')) {
            if ($scope->getTestResult()->getResultCode() == TestResult::FAILED) {
                // \x07 = BEL character, so the TTY makes a sound to let you know a failure happened.
                fwrite(STDOUT, PHP_EOL . "\x07PAUSING ON FAILURE - Press any key to continue" . PHP_EOL);
                fflush(STDOUT);
                $anything = fread(STDIN, 1);
            }
        }
    }
}