lib/rack/app/test.rb in rack-app-2.0.0 vs lib/rack/app/test.rb in rack-app-2.1.0

@@ -56,11 +56,26 @@
   def request_env_by(request_method, url, raw_properties)
 
     properties = format_properties(raw_properties)
     additional_headers = properties[:headers].reduce({}) { |m, (k, v)| m.merge("HTTP_#{k.to_s.gsub('-', '_').upcase}" => v.to_s) }
 
+
     payload = raw_properties.delete(:payload)
-    additional_headers["rack.input"]= ::Rack::Lint::InputWrapper.new(StringIO.new(payload.to_s)) if payload.is_a?(String)
+
+    io = case payload
+
+           when IO
+             payload
+
+           when String
+             StringIO.new(payload.to_s)
+
+           else
+             StringIO.new('')
+
+         end
+
+    additional_headers["rack.input"]= ::Rack::Lint::InputWrapper.new(io)
 
     {
         "REMOTE_ADDR" => "192.168.56.1",
         "REQUEST_METHOD" => request_method.to_s.upcase,
         "REQUEST_PATH" => url,
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