Add callback test endpoint

Author: simonhamp

routes/web.php

@@ -112,6 +112,16 @@
     ->middleware(EnsureFeaturesAreActive::using(ShowAuthButtons::class))
     ->name('customer.logout');
 
+Route::get('callback', function (Illuminate\Http\Request $request) {
+    $url = $request->query('url');
+
+    if ($url && str_starts_with($url, 'nativephp://')) {
+        return redirect()->away($url.'?token='.uuid_create());
+    }
+
+    return response('Goodbye');
+})->name('callback');
+
 // Customer license management routes
 Route::middleware(['auth', EnsureFeaturesAreActive::using(ShowAuthButtons::class)])->prefix('customer')->name('customer.')->group(function () {
     Route::get('licenses', [CustomerLicenseController::class, 'index'])->name('licenses');

tests/Feature/CallbackRedirectTest.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Tests\Feature;
+
+use Tests\TestCase;
+
+class CallbackRedirectTest extends TestCase
+{
+    public function test_callback_redirects_to_nativephp_url_with_token(): void
+    {
+        $response = $this->get('/callback?url=nativephp://127.0.0.1/some/url');
+
+        $response->assertRedirect();
+
+        $redirectUrl = $response->headers->get('Location');
+
+        $this->assertStringStartsWith('nativephp://127.0.0.1/some/url?token=', $redirectUrl);
+
+        // Extract and validate the token is a valid UUID
+        $token = str_replace('nativephp://127.0.0.1/some/url?token=', '', $redirectUrl);
+        $this->assertTrue(
+            preg_match('/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i', $token) === 1,
+            "Token should be a valid UUID, got: {$token}"
+        );
+    }
+
+    public function test_callback_shows_goodbye_for_non_nativephp_url(): void
+    {
+        $response = $this->get('/callback?url=https://example.com');
+
+        $response->assertStatus(200);
+        $response->assertSee('Goodbye');
+    }
+
+    public function test_callback_shows_goodbye_when_no_url_provided(): void
+    {
+        $response = $this->get('/callback');
+
+        $response->assertStatus(200);
+        $response->assertSee('Goodbye');
+    }
+
+    public function test_callback_shows_goodbye_for_partial_nativephp_scheme(): void
+    {
+        $response = $this->get('/callback?url=nativephp:/missing-slash');
+
+        $response->assertStatus(200);
+        $response->assertSee('Goodbye');
+    }
+}