Working state

tests/Shared/SessionManagerCoverageTest.php

@@ -0,0 +1,32 @@
+<?php
+declare(strict_types=1);
+
+namespace Tests\Shared;
+
+use App\Shared\Http\SessionManager;
+use PHPUnit\Framework\TestCase;
+
+#[\PHPUnit\Framework\Attributes\AllowMockObjectsWithoutExpectations]
+final class SessionManagerCoverageTest extends TestCase
+{
+    private SessionManager $manager;
+
+    protected function setUp(): void
+    {
+        $_SESSION = [];
+        $this->manager = new SessionManager();
+    }
+
+    protected function tearDown(): void
+    {
+        $_SESSION = [];
+    }
+
+    public function testGetUserIdCastsNumericStringToInteger(): void
+    {
+        $_SESSION['user_id'] = '42';
+
+        self::assertSame(42, $this->manager->getUserId());
+        self::assertTrue($this->manager->isAuthenticated());
+    }
+}