Split testsuite for unit and inspector based tests (#82)

tests/Unit/Schema/JsonRpc/NotificationTest.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the official PHP MCP SDK.
+ *
+ * A collaboration between Symfony and the PHP Foundation.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Mcp\Tests\Unit\Schema\JsonRpc;
+
+use Mcp\Schema\JsonRpc\Notification;
+use PHPUnit\Framework\TestCase;
+
+final class NotificationTest extends TestCase
+{
+    public function testMetaIsLoopedThrough()
+    {
+        $notificationImplementation = new class extends Notification {
+            public static function getMethod(): string
+            {
+                return 'notifications/dummy';
+            }
+
+            public static function fromParams(?array $params): self
+            {
+                return new self();
+            }
+
+            protected function getParams(): ?array
+            {
+                return null;
+            }
+        };
+
+        $notification = $notificationImplementation::fromArray([
+            'jsonrpc' => '2.0',
+            'method' => 'notifications/dummy',
+            'params' => [
+                '_meta' => ['key' => 'value'],
+            ],
+        ]);
+
+        $expectedMeta = [
+            'jsonrpc' => '2.0',
+            'method' => 'notifications/dummy',
+            'params' => [
+                '_meta' => ['key' => 'value'],
+            ],
+        ];
+
+        $this->assertSame($expectedMeta, $notification->jsonSerialize());
+    }
+}