Use mate or show! in irb to open in EDITOR

lib/sinatra/test_methods.rb

@@ -13,6 +13,25 @@ def #{verb}_it(path, params = {})
         end
       end_eval
     end
+
+    def show!(editor = nil)
+      editor = editor || ENV['EDITOR']
+      IO.popen(editor, 'w') do |f| 
+        f.puts "<!--"
+        f.puts result_info
+        f.puts "-->"
+        f.puts
+        f.puts body
+      end
+    end
+    alias :mate :show!
+
+    def result_info
+      info = <<-end_info
+      # Status: #{status}
+      # Headers: #{headers.inspect}
+      end_info
+    end
 
     def response
       @response || Rack::MockResponse.new(404, {}, '')