Сhange the variable type of the string

tests/app/router/RouterTest.php

@@ -29,7 +29,7 @@ class RouterTest extends PHPUnit_Framework_TestCase
         $router->add('user', 'user/account/:id', 'user');
         $route = $router->route('user/account/213');
         $this->assertSame(1, count($route->getParams()));
-        $this->assertSame(array('id' => 213), $route->getParams());
+        $this->assertSame(array('id' => '213'), $route->getParams());
         $this->assertSame('user', $router->getRouteName());
     }
 
@@ -41,10 +41,10 @@ class RouterTest extends PHPUnit_Framework_TestCase
         $route = $router->route('user/account/213');
         $this->assertSame('user', $router->getRouteName());
         $this->assertSame(1, count($route->getParams()));
-        $this->assertSame(array('id' => 213), $route->getParams());
+        $this->assertSame(array('id' => '213'), $route->getParams());
         $route = $router->route('sale/order/22');
         $this->assertSame('sale', $router->getRouteName());
-        $this->assertSame(array('id' => 22), $route->getParams());
+        $this->assertSame(array('id' => '22'), $route->getParams());
     }
 
     public function testRouteNotmatch()