From df5fd3ba0949819120d8e8e3c04456721dca08ee Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Fri, 23 Dec 2016 15:01:05 +0100
Subject: [PATCH] Cache executable finder calls

---
 tests/Composer/TestCase.php | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tests/Composer/TestCase.php b/tests/Composer/TestCase.php
index 1eca8108b..1d1784600 100644
--- a/tests/Composer/TestCase.php
+++ b/tests/Composer/TestCase.php
@@ -22,6 +22,7 @@ use Symfony\Component\Process\ExecutableFinder;
 abstract class TestCase extends \PHPUnit_Framework_TestCase
 {
     private static $parser;
+    private static $executableCache = array();
 
     public static function getUniqueTmpDirectory()
     {
@@ -94,9 +95,13 @@ abstract class TestCase extends \PHPUnit_Framework_TestCase
      */
     protected function skipIfNotExecutable($executableName)
     {
-        $finder = new ExecutableFinder();
+        if (!isset(self::$executableCache[$executableName])) {
+            $finder = new ExecutableFinder();
+            self::$executableCache[$executableName] = (bool) $finder->find($executableName);
+        }
 
-        if (!$finder->find($executableName))
+        if (false === self::$executableCache[$executableName]) {
             $this->markTestSkipped($executableName . ' is not found or not executable.');
+        }
     }
 }