--- /dev/null
+<?php
+
+/*
+ * This file is part of the Behat.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Behat\Output\Node\EventListener\Statistics;
+
+use Behat\Behat\Output\Node\Printer\StatisticsPrinter;
+use Behat\Behat\Output\Statistics\Statistics;
+use Behat\Testwork\EventDispatcher\Event\ExerciseCompleted;
+use Behat\Testwork\Output\Formatter;
+use Behat\Testwork\Output\Node\EventListener\EventListener;
+use Symfony\Component\EventDispatcher\Event;
+
+/**
+ * Collects general suite stats such as time and memory during its execution and prints it afterwards.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+final class StatisticsListener implements EventListener
+{
+ /**
+ * @var Statistics
+ */
+ private $statistics;
+ /**
+ * @var StatisticsPrinter
+ */
+ private $printer;
+
+ /**
+ * Initializes listener.
+ *
+ * @param Statistics $statistics
+ * @param StatisticsPrinter $statisticsPrinter
+ */
+ public function __construct(Statistics $statistics, StatisticsPrinter $statisticsPrinter)
+ {
+ $this->statistics = $statistics;
+ $this->printer = $statisticsPrinter;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function listenEvent(Formatter $formatter, Event $event, $eventName)
+ {
+ $this->startTimerOnBeforeExercise($eventName);
+ $this->printStatisticsOnAfterExerciseEvent($formatter, $eventName);
+ }
+
+ /**
+ * Starts timer on exercise BEFORE event.
+ *
+ * @param string $eventName
+ */
+ private function startTimerOnBeforeExercise($eventName)
+ {
+ if (ExerciseCompleted::BEFORE !== $eventName) {
+ return;
+ }
+
+ $this->statistics->startTimer();
+ }
+
+ /**
+ * Prints statistics on after exercise event.
+ *
+ * @param Formatter $formatter
+ * @param string $eventName
+ */
+ private function printStatisticsOnAfterExerciseEvent(Formatter $formatter, $eventName)
+ {
+ if (ExerciseCompleted::AFTER !== $eventName) {
+ return;
+ }
+
+ $this->statistics->stopTimer();
+ $this->printer->printStatistics($formatter, $this->statistics);
+ }
+}