Patron adapter handles PATCH requests with body.

lib/webmock/http_lib_adapters/patron_adapter.rb

@@ -69,7 +69,7 @@ def self.build_request_signature(req)
           uri = WebMock::Util::URI.heuristic_parse(req.url)
           uri.path = uri.normalized_path.gsub("[^:]//","/")
 
-          if [:put, :post].include?(req.action)
+          if [:put, :post, :patch].include?(req.action)
             if req.file_name
               if !File.exist?(req.file_name) || !File.readable?(req.file_name)
                 raise ArgumentError.new("Unable to open specified file.")

spec/acceptance/patron/patron_spec.rb

@@ -19,6 +19,13 @@
         @sess.base_url = "http://www.example.com"
       end
 
+      it "should allow stubbing PATCH request with body" do
+        stub_request(:patch, "http://www.example.com/")
+          .with(body: "abc")
+
+        @sess.patch('/', "abc")
+      end
+
       describe "file requests" do
 
         before(:each) do