first commit

tests/Shared/FlashServiceConsumeTest.php

@@ -0,0 +1,26 @@
+<?php
+declare(strict_types=1);
+
+namespace Tests\Shared;
+
+use App\Shared\Http\FlashService;
+use PHPUnit\Framework\TestCase;
+
+final class FlashServiceConsumeTest extends TestCase
+{
+    protected function setUp(): void
+    {
+        $_SESSION = [];
+    }
+
+    public function testGetReturnsNullWhenMissingAndConsumesWhenPresent(): void
+    {
+        $flash = new FlashService();
+
+        self::assertNull($flash->get('missing'));
+
+        $flash->set('notice', 'Bonjour');
+        self::assertSame('Bonjour', $flash->get('notice'));
+        self::assertNull($flash->get('notice'));
+    }
+}