(fix): reset allowOverride in Router::reset() and guard duplicate alias entries

Author: ChiragAgg5k

src/Http/Route.php

@@ -89,7 +89,9 @@ public function alias(string $path): self
             Router::addRouteAlias($path, $this, $method);
         }
 
-        $this->aliasPaths[] = $path;
+        if (!\in_array($path, $this->aliasPaths, true)) {
+            $this->aliasPaths[] = $path;
+        }
 
         return $this;
     }
@@ -108,7 +110,9 @@ public function aliasMethod(string $method): self
             Router::addRouteAlias($path, $this, $method);
         }
 
-        $this->aliasMethods[] = $method;
+        if (!\in_array($method, $this->aliasMethods, true)) {
+            $this->aliasMethods[] = $method;
+        }
 
         return $this;
     }

src/Http/Router.php

@@ -266,6 +266,7 @@ public static function reset(): void
     {
         self::$params = [];
         self::$wildcard = null;
+        self::$allowOverride = false;
         self::$routes = [
             Http::REQUEST_METHOD_GET => [],
             Http::REQUEST_METHOD_POST => [],

tests/RouterTest.php

@@ -215,8 +215,10 @@ public function testCanOverrideMethodAlias(): void
             $routeGET = new Route(Http::REQUEST_METHOD_GET, '/userinfo');
             Router::addRoute($routeGET);
             $routeGET->aliasMethod(Http::REQUEST_METHOD_POST);
+            $routeGET->aliasMethod(Http::REQUEST_METHOD_POST);
 
             $this->assertEquals($routeGET, Router::match(Http::REQUEST_METHOD_POST, '/userinfo')?->route);
+            $this->assertSame([Http::REQUEST_METHOD_POST], $routeGET->getAliasMethods());
         } finally {
             Router::setAllowOverride(false);
         }