[2.x] Ensure URL defaults are flushed (#807)

* Ensure URL defaults are flushed

* Apply fixes from StyleCI

---------

Co-authored-by: StyleCI Bot <[email protected]>

Author: nunomaduro

tests/UrlTest.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Laravel\Octane\Tests;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\URL;
+
+class UrlTest extends TestCase
+{
+    public function test_url_defaults_are_flushed()
+    {
+        [$app, $worker, $client] = $this->createOctaneContext([
+            Request::create('/b', 'GET'),
+            Request::create('/a', 'GET'),
+            Request::create('/b', 'GET'),
+        ]);
+
+        $app['router']->get('a', function () {
+            URL::defaults(['locale' => 'default']);
+
+            return ['default-parameters' => URL::getDefaultParameters()];
+        });
+
+        $app['router']->get('b/{locale?}', function (?string $locale = null) {
+            return [
+                'locale' => $locale ?: 'none',
+                'default-parameters' => URL::getDefaultParameters(),
+            ];
+        });
+
+        $worker->run();
+
+        $this->assertEquals([
+            'locale' => 'none',
+            'default-parameters' => [],
+        ], json_decode($client->responses[0]->getContent(), true));
+
+        $this->assertEquals([
+            'default-parameters' => [
+                'locale' => 'default',
+            ],
+        ], json_decode($client->responses[1]->getContent(), true));
+
+        $this->assertEquals([
+            'locale' => 'none',
+            'default-parameters' => [],
+        ], json_decode($client->responses[0]->getContent(), true));
+    }
+}