Test README resources example

Author: sambostock

README.md

@@ -474,6 +474,7 @@ MCP spec includes [Resources](https://modelcontextprotocol.io/docs/concepts/reso
 
 The `MCP::Resource` class provides a way to register resources with the server.
 
+<!-- SNIPPET ID: resources -->
 ```ruby
 resource = MCP::Resource.new(
   uri: "https://example.com/my_resource",

test/fixtures/files/code_snippet_wrappers/readme/resources.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require "mcp"
+
+b = binding
+eval(File.read("code_snippet.rb"), b) # rubocop:disable Security/Eval -- We need to be able to extract the server local variable
+server = b.local_variable_get(:server)
+
+puts server.handle_json({ jsonrpc: "2.0", id: "1", method: "resources/list" }.to_json)

test/integration/readme_code_snippets_test.rb

@@ -248,6 +248,28 @@ class ReadmeCodeSnippetsTest < ActiveSupport::TestCase
     STDOUT
   end
 
+  test "Resources examples work exactly as documented in README" do
+    assert_json_lines(
+      [
+        {
+          jsonrpc: "2.0",
+          id: "1",
+          result: {
+            resources: [
+              {
+                uri: "https://example.com/my_resource",
+                name: "My Resource",
+                description: "Lorem ipsum dolor sit amet",
+                mimeType: "text/html",
+              },
+            ],
+          },
+        },
+      ],
+      run_code_snippet("resources"),
+    )
+  end
+
   private
 
   def assert_json_lines(expected, actual, message = "Expected the given JSON lines")