From 5c6f36e2b39b125eeea0bd4b4704ec3c99abae31 Mon Sep 17 00:00:00 2001
From: Alexander Makarov <sam@rmcreative.ru>
Date: Sun, 18 Aug 2024 00:12:57 +0400
Subject: [PATCH] Add immutability tests (#18)

---
 tests/FileRouterTest.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tests/FileRouterTest.php b/tests/FileRouterTest.php
index bb4fef2..3257814 100644
--- a/tests/FileRouterTest.php
+++ b/tests/FileRouterTest.php
@@ -391,6 +391,17 @@ public function testModularityFastPath(): void
         $router->process($request, $handler);
     }
 
+    public function testImmutability(): void
+    {
+        $router = $this->createRouter();
+
+        $this->assertNotSame($router, $router->withBaseControllerDirectory('x'));
+        $this->assertNotSame($router, $router->withClassPostfix('x'));
+        $this->assertNotSame($router, $router->withNamespace('x'));
+        $this->assertNotSame($router, $router->withDefaultControllerName('x'));
+        $this->assertNotSame($router, $router->withRoutePrefix('x'));
+    }
+
     private function createRouter(): FileRouter
     {
         $container = new SimpleContainer([