[11.x] Adds conditional to routes (#53654)

* Added conditionals to routes.

* Cs fixes.

* Update Route.php

---------

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Routing/Route.php

@@ -17,6 +17,7 @@
 use Illuminate\Routing\Matching\UriValidator;
 use Illuminate\Support\Arr;
 use Illuminate\Support\Str;
+use Illuminate\Support\Traits\Conditionable;
 use Illuminate\Support\Traits\Macroable;
 use InvalidArgumentException;
 use Laravel\SerializableClosure\SerializableClosure;
@@ -27,7 +28,7 @@
 
 class Route
 {
-    use CreatesRegularExpressionRouteConstraints, FiltersControllerMiddleware, Macroable, ResolvesRouteDependencies;
+    use Conditionable, CreatesRegularExpressionRouteConstraints, FiltersControllerMiddleware, Macroable, ResolvesRouteDependencies;
 
     /**
      * The URI pattern the route responds to.

tests/Routing/RoutingRouteTest.php

@@ -943,6 +943,26 @@ public function testWherePatternsProperlyFilter()
         });
         $route->where('bar', '[0-9]+');
         $this->assertFalse($route->matches($request));
+
+        /*
+         * Conditional
+         */
+        $route = new Route('GET', '{subdomain}.awesome.test', function () {
+            //
+        });
+
+        $route->when(true, function ($route) {
+            $route->whereIn('subdomain', [
+                'one',
+                'two',
+            ]);
+        });
+
+        $request = Request::create('test.awesome.test', 'GET');
+        $this->assertFalse($route->matches($request));
+
+        $request = Request::create('one.awesome.test', 'GET');
+        $this->assertTrue($route->matches($request));
     }
 
     public function testRoutePrefixParameterParsing()