[Server] Kicking off adoption of conformance testing

.gitignore

@@ -6,3 +6,5 @@ vendor
 examples/**/dev.log
 examples/**/cache
 examples/**/sessions
+results
+tests/Conformance/**/sessions

Makefile

@@ -21,6 +21,12 @@ unit-tests:
 inspector-tests:
 	vendor/bin/phpunit --testsuite=inspector
 
+conformance-server:
+	php -S localhost:8000 tests/Conformance/Server/server.php
+
+conformance-tests:
+	npx @modelcontextprotocol/conformance server --url http://localhost:8000/
+
 coverage:
 	XDEBUG_MODE=coverage vendor/bin/phpunit --testsuite=unit --coverage-html=coverage
 

tests/Conformance/Server/server.php

@@ -0,0 +1,41 @@
+<?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.
+ */
+
+use Http\Discovery\Psr17Factory;
+use Laminas\HttpHandlerRunner\Emitter\SapiEmitter;
+use Mcp\Schema\Content\AudioContent;
+use Mcp\Schema\Content\ImageContent;
+use Mcp\Server;
+use Mcp\Server\Session\FileSessionStore;
+use Mcp\Server\Transport\StreamableHttpTransport;
+
+require_once dirname(__DIR__, 3).'/vendor/autoload.php';
+
+// Sample base64 encoded 1x1 red PNG pixel for testing
+const TEST_IMAGE_BASE64 = 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8DwHwAFBQIAX8jx0gAAAABJRU5ErkJggg==';
+// Sample base64 encoded minimal WAV file for testing
+const TEST_AUDIO_BASE64 = 'UklGRiYAAABXQVZFZm10IBAAAAABAAEAQB8AAAB9AAACABAAZGF0YQIAAAA=';
+
+$server = Server::builder()
+    ->setServerInfo('mcp-conformance-test-server', '1.0.0')
+    ->setSession(new FileSessionStore(__DIR__.'/sessions'))
+    ->addTool(fn () => 'This is a simple text response for testing.', 'test_simple_text', 'Tests simple text content response')
+    ->addTool(fn () => new ImageContent(TEST_IMAGE_BASE64, 'image/png'), 'test_image_content', 'Tests image content response')
+    ->addTool(fn () => new AudioContent(TEST_AUDIO_BASE64, 'audio/wav'), 'test_audio_content', 'Tests audio content response')
+    ->build();
+
+$transport = new StreamableHttpTransport(
+    (new Psr17Factory())->createServerRequestFromGlobals(),
+);
+
+$result = $server->run($transport);
+
+(new SapiEmitter())->emit($result);