test: fix coverage

app/Http/Controllers/SetupController.php

@@ -45,6 +45,9 @@ class SetupController extends Controller
             throw new PrettyPageException(trans('setup.database.table-already-exists', ['tables' => json_encode($existingTables)]), 1);
         }
 
+        /**
+         * @codeCoverageIgnore
+         */
         if (! function_exists('escapeshellarg')) {
             throw new PrettyPageException(trans('setup.disabled-functions.escapeshellarg'), 1);
         }

tests/SetupControllerTest.php

@@ -53,6 +53,10 @@ class SetupControllerTest extends TestCase
     {
         $this->visit('/setup/info')
             ->seePageIs('/setup/info');
+
+        Artisan::call('migrate:refresh');
+        Schema::drop('users');
+        $this->visit('/setup/info')->see('already exist');
     }
 
     public function testFinish()