diff -r 000000000000 -r 7f95f8617b0b vendor/assetic/tests/Assetic/Test/Util/ProcessBuilderTest.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/assetic/tests/Assetic/Test/Util/ProcessBuilderTest.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the Assetic package, an OpenSky project.
+ *
+ * (c) 2010-2011 OpenSky Project Inc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Assetic\Test\Util;
+
+use Assetic\Util\ProcessBuilder;
+
+class ProcessBuilderTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @test
+     */
+    public function shouldInheritEnvironmentVars()
+    {
+        $snapshot = $_ENV;
+        $_ENV = $expected = array('foo' => 'bar');
+
+        $pb = new ProcessBuilder();
+        $pb->add('foo')->inheritEnvironmentVariables();
+        $proc = $pb->getProcess();
+
+        $this->assertEquals($expected, $proc->getEnv(), '->inheritEnvironmentVariables() copies $_ENV');
+
+        $_ENV = $snapshot;
+    }
+
+    /**
+     * @test
+     */
+    public function shouldNotReplaceExplicitlySetVars()
+    {
+        $snapshot = $_ENV;
+        $_ENV = array('foo' => 'bar');
+        $expected = array('foo' => 'baz');
+
+        $pb = new ProcessBuilder();
+        $pb
+            ->setEnv('foo', 'baz')
+            ->inheritEnvironmentVariables()
+            ->add('foo')
+        ;
+        $proc = $pb->getProcess();
+
+        $this->assertEquals($expected, $proc->getEnv(), '->inheritEnvironmentVariables() copies $_ENV');
+
+        $_ENV = $snapshot;
+    }
+}