From 305b3413cf8dea533c8f051bdda3fc0b013332f3 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Tue, 17 Sep 2024 09:52:56 +0200
Subject: [PATCH] Add test covering the fix for #12107, closes #12108

---
 tests/Composer/Test/ApplicationTest.php | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tests/Composer/Test/ApplicationTest.php b/tests/Composer/Test/ApplicationTest.php
index 8e4bce1b5..866892a3b 100644
--- a/tests/Composer/Test/ApplicationTest.php
+++ b/tests/Composer/Test/ApplicationTest.php
@@ -74,4 +74,16 @@ class ApplicationTest extends TestCase
 
         self::assertSame('', $output->fetch());
     }
+
+    /**
+     * @runInSeparateProcess
+     * @see https://github.com/composer/composer/issues/12107
+     */
+    public function testProcessIsolationWorksMultipleTimes(): void
+    {
+        $application = new Application;
+        $application->add(new \Composer\Command\AboutCommand);
+        self::assertSame(0, $application->doRun(new ArrayInput(['command' => 'about']), new BufferedOutput()));
+        self::assertSame(0, $application->doRun(new ArrayInput(['command' => 'about']), new BufferedOutput()));
+    }
 }