Remove useless uniqid in tempnam calls

Author: GromNaN

Tests/Matcher/Dumper/CompiledUrlMatcherDumperTest.php

@@ -30,7 +30,7 @@ protected function setUp(): void
     {
         parent::setUp();
 
-        $this->dumpPath = sys_get_temp_dir().\DIRECTORY_SEPARATOR.'php_matcher.'.uniqid('CompiledUrlMatcher').'.php';
+        $this->dumpPath = tempnam(sys_get_temp_dir(), 'sf_matcher_');
     }
 
     protected function tearDown(): void

Tests/RouterTest.php

@@ -35,7 +35,9 @@ protected function setUp(): void
         $this->loader = $this->createMock(LoaderInterface::class);
         $this->router = new Router($this->loader, 'routing.yml');
 
-        $this->cacheDir = sys_get_temp_dir().\DIRECTORY_SEPARATOR.uniqid('router_', true);
+        $this->cacheDir = tempnam(sys_get_temp_dir(), 'sf_router_');
+        unlink($this->cacheDir);
+        mkdir($this->cacheDir);
     }
 
     protected function tearDown(): void