Fix issue with setup completed permissions, add first test for the setup

app/Http/Middleware/SetupCheckMiddleware.php

@@ -22,6 +22,11 @@ class SetupCheckMiddleware
     public function handle($request, Closure $next)
     {
         if ($request->is('setup/*')) {
+            if (config('app.setup_completed') === true) {
+                // Do not allow access to setup after it was completed
+                return redirect()->route('front');
+            }
+
             // Skip check if current route targets the setup
             return $next($request);
         }

tests/Feature/Controller/Setup/MetaControllerTest.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Tests\Feature\Controller\Setup;
+
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+use Tests\TestCase;
+
+class MetaControllerTest extends TestCase
+{
+    use DatabaseTransactions;
+    use DatabaseMigrations;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        config(['app.setup_completed' => false]);
+    }
+
+    public function testSetupCheckRedirect(): void
+    {
+        $response = $this->get('/');
+
+        $response->assertRedirect('setup/start');
+    }
+
+    public function testSetupCheckWithoutRedirect(): void
+    {
+        config(['app.setup_completed' => true]);
+
+        $response = $this->get('/');
+
+        $response->assertStatus(200);
+    }
+
+    public function testRedirectIfSetupCompleted(): void
+    {
+        config(['app.setup_completed' => true]);
+
+        $response = $this->get('setup/start');
+
+        $response->assertRedirect('/');
+    }
+
+    public function testSetupWelcomeView(): void
+    {
+        $response = $this->get('setup/start');
+
+        $response->assertStatus(200)
+            ->assertSee('Welcome to the LinkAce setup');
+    }
+}