From cee435fefd0054c56f2a3cac6b27852efe817de6 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Mon, 27 Feb 2017 14:57:41 +0100
Subject: [PATCH] do not register the test listener twice

If the listener is already configured through the PHPUnit config, there
is no need to also enable it explicitly in the test runner.
---
 src/Symfony/Bridge/PhpUnit/TextUI/TestRunner.php | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/Symfony/Bridge/PhpUnit/TextUI/TestRunner.php b/src/Symfony/Bridge/PhpUnit/TextUI/TestRunner.php
index 16c5f078e6..9d76a0dfad 100644
--- a/src/Symfony/Bridge/PhpUnit/TextUI/TestRunner.php
+++ b/src/Symfony/Bridge/PhpUnit/TextUI/TestRunner.php
@@ -27,9 +27,16 @@ class TestRunner extends \PHPUnit_TextUI_TestRunner
      */
     protected function handleConfiguration(array &$arguments)
     {
-        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
-        $arguments['listeners'][] = new SymfonyTestsListener();
+        $listener = new SymfonyTestsListener();
 
-        return parent::handleConfiguration($arguments);
+        $result = parent::handleConfiguration($arguments);
+
+        $arguments['listeners'] = isset($arguments['listeners']) ? $arguments['listeners'] : array();
+
+        if (!array_filter($arguments['listeners'], function ($listener) { return $listener instanceof SymfonyTestsListener; })) {
+            $arguments['listeners'][] = $listener;
+        }
+
+        return $result;
     }
 }