Give Sitemap class a name

It is not user-friendly to have anonymous classes. They are hard to
debug.

So let's give the SitemapGenerator::Sitemap's class a name (Config)

Author: jasonkarns

lib/sitemap_generator.rb

@@ -40,7 +40,7 @@ module SitemapGenerator
     }
 
     # Lazy-initialize the LinkSet instance
-    Sitemap = (Class.new do
+    Sitemap = (Config = Class.new do
       # Use a new LinkSet instance
       def reset!
         @link_set = LinkSet.new

spec/sitemap_generator/sitemap_spec.rb

@@ -3,6 +3,10 @@
 RSpec.describe SitemapGenerator::Sitemap do
   subject { described_class }
 
+  it "has a class name" do
+    expect(subject.class.name).to match "SitemapGenerator::"
+  end
+
   describe "method missing" do
     it "should not be public" do
       expect(subject.methods).to_not include :method_missing