diff --git a/rswag-specs/lib/rswag/specs/request_factory.rb b/rswag-specs/lib/rswag/specs/request_factory.rb
index dcb18db..20e499f 100644
--- a/rswag-specs/lib/rswag/specs/request_factory.rb
+++ b/rswag-specs/lib/rswag/specs/request_factory.rb
@@ -138,15 +138,21 @@ module Rswag
         end
       end
 
+      def build_form_payload(parameters, example)
+        #See http://seejohncode.com/2012/04/29/quick-tip-testing-multipart-uploads-with-rspec/
+        # Rather that serializing with the appropriate encoding (e.g. multipart/form-data),
+        # Rails test infrastructure allows us to send the values directly as a hash
+        # PROS: simple to implement, CONS: serialization/deserialization is bypassed in test
+        tuples = parameters
+          .select { |p| p[:in] == :formData }
+          .map { |p| [ p[:name], example.send(p[:name]) ] }
+        Hash[ tuples ]
+      end
+
       def build_json_payload(parameters, example)
         body_param = parameters.select { |p| p[:in] == :body }.first
         body_param ? example.send(body_param[:name]).to_json : nil
       end
-
-      def build_form_payload(parameters, example)
-        nil
-        # TODO:
-      end
     end
   end
 end
diff --git a/rswag-specs/spec/rswag/specs/request_factory_spec.rb b/rswag-specs/spec/rswag/specs/request_factory_spec.rb
index a22b0d4..d906644 100644
--- a/rswag-specs/spec/rswag/specs/request_factory_spec.rb
+++ b/rswag-specs/spec/rswag/specs/request_factory_spec.rb
@@ -158,6 +158,25 @@ module Rswag
               expect(request[:payload]).to eq("{\"text\":\"Some comment\"}")
             end
           end
+
+          context 'form payload' do
+            before do
+              metadata[:operation][:consumes] = [ 'multipart/form-data' ]
+              metadata[:operation][:parameters] = [
+                { name: 'f1', in: :formData, type: :string },
+                { name: 'f2', in: :formData, type: :string }
+              ]
+              allow(example).to receive(:f1).and_return('foo blah')
+              allow(example).to receive(:f2).and_return('bar blah')
+            end
+
+            it 'sets payload to hash of names and example values' do
+              expect(request[:payload]).to eq(
+                'f1' => 'foo blah',
+                'f2' => 'bar blah'
+              )
+            end
+          end
         end
 
         context 'produces content' do
diff --git a/test-app/app/controllers/blogs_controller.rb b/test-app/app/controllers/blogs_controller.rb
index 765576b..dc732ed 100644
--- a/test-app/app/controllers/blogs_controller.rb
+++ b/test-app/app/controllers/blogs_controller.rb
@@ -1,3 +1,5 @@
+require 'fileutils'
+
 class BlogsController < ApplicationController
 
   # POST /blogs
@@ -6,6 +8,14 @@ class BlogsController < ApplicationController
     respond_with @blog
   end
 
+  # Put /blogs/1
+  def upload
+    @blog = Blog.find_by_id(params[:id])
+    return head :not_found if @blog.nil?
+    @blog.thumbnail = save_uploaded_file params[:file]
+    head @blog.save ? :ok : :unprocsessible_entity
+  end
+
   # GET /blogs
   def index
     @blogs = Blog.all
@@ -22,4 +32,13 @@ class BlogsController < ApplicationController
     respond_with @blog, status: :not_found and return unless @blog
     respond_with @blog
   end
+
+  private
+
+  def save_uploaded_file(field)
+    return if field.nil?
+    file = File.join('tmp', field.original_filename)
+    FileUtils.cp field.tempfile.path, file
+    field.original_filename
+  end
 end
diff --git a/test-app/app/models/blog.rb b/test-app/app/models/blog.rb
index e913dba..9fb7070 100644
--- a/test-app/app/models/blog.rb
+++ b/test-app/app/models/blog.rb
@@ -5,7 +5,8 @@ class Blog < ActiveRecord::Base
     {
       id: id,
       title: title,
-      content: nil
+      content: nil,
+      thumbnail: thumbnail
     }
   end
 end
diff --git a/test-app/config/routes.rb b/test-app/config/routes.rb
index 2974a48..dff0779 100644
--- a/test-app/config/routes.rb
+++ b/test-app/config/routes.rb
@@ -1,5 +1,6 @@
 TestApp::Application.routes.draw do
   resources :blogs
+  put '/blogs/:id/upload', to: 'blogs#upload'
 
   post 'auth-tests/basic', to: 'auth_tests#basic'
 
diff --git a/test-app/db/migrate/20160218212104_create_blogs.rb b/test-app/db/migrate/20160218212104_create_blogs.rb
index 03e1463..9dd862b 100644
--- a/test-app/db/migrate/20160218212104_create_blogs.rb
+++ b/test-app/db/migrate/20160218212104_create_blogs.rb
@@ -9,6 +9,7 @@ class CreateBlogs < migration_class
     create_table :blogs do |t|
       t.string :title
       t.text :content
+      t.string :thumbnail
 
       t.timestamps
     end
diff --git a/test-app/db/schema.rb b/test-app/db/schema.rb
index 4e72efd..8accba1 100644
--- a/test-app/db/schema.rb
+++ b/test-app/db/schema.rb
@@ -15,6 +15,7 @@ ActiveRecord::Schema.define(version: 20160218212104) do
   create_table "blogs", force: :cascade do |t|
     t.string "title"
     t.text "content"
+    t.string "thumbnail"
     t.datetime "created_at"
     t.datetime "updated_at"
   end
diff --git a/test-app/spec/fixtures/thumbnail.png b/test-app/spec/fixtures/thumbnail.png
new file mode 100644
index 0000000..5790d6c
Binary files /dev/null and b/test-app/spec/fixtures/thumbnail.png differ
diff --git a/test-app/spec/integration/blogs_spec.rb b/test-app/spec/integration/blogs_spec.rb
index 1949fa9..143dc39 100644
--- a/test-app/spec/integration/blogs_spec.rb
+++ b/test-app/spec/integration/blogs_spec.rb
@@ -10,7 +10,7 @@ describe 'Blogs API', type: :request, swagger_doc: 'v1/swagger.json' do
       operationId 'createBlog'
       consumes 'application/json'
       produces 'application/json'
-      parameter name: :blog, :in => :body, schema: { '$ref' => '#/definitions/blog' }
+      parameter name: :blog, in: :body, schema: { '$ref' => '#/definitions/blog' }
 
       let(:blog) { { title: 'foo', content: 'bar' } }
 
@@ -24,11 +24,6 @@ describe 'Blogs API', type: :request, swagger_doc: 'v1/swagger.json' do
         let(:blog) { { title: 'foo' } }
         run_test!
       end
-
-      response '406', 'unsupported accept header' do
-        let(:'Accept') { 'application/foo' }
-        run_test!
-      end
     end
 
     get 'Searches blogs' do
@@ -53,10 +48,10 @@ describe 'Blogs API', type: :request, swagger_doc: 'v1/swagger.json' do
   end
 
   path '/blogs/{id}' do
-    parameter name: :id, :in => :path, :type => :string
+    parameter name: :id, in: :path, type: :string
 
     let(:id) { blog.id }
-    let(:blog) { Blog.create(title: 'foo', content: 'bar') }
+    let(:blog) { Blog.create(title: 'foo', content: 'bar', thumbnail: 'thumbnail.png') }
 
     get 'Retrieves a blog' do
       tags 'Blogs'
@@ -74,9 +69,11 @@ describe 'Blogs API', type: :request, swagger_doc: 'v1/swagger.json' do
         examples 'application/json' => {
             id: 1,
             title: 'Hello world!',
-            content: 'Hello world and hello universe. Thank you all very much!!!'
+            content: 'Hello world and hello universe. Thank you all very much!!!',
+            thumbnail: "thumbnail.png"
           }
 
+        let(:id) { blog.id }
         run_test!
       end
 
@@ -84,9 +81,24 @@ describe 'Blogs API', type: :request, swagger_doc: 'v1/swagger.json' do
         let(:id) { 'invalid' }
         run_test!
       end
+    end
+  end
 
-      response '406', 'unsupported accept header' do
-        let(:'Accept') { 'application/foo' }
+  path '/blogs/{id}/upload' do
+    parameter name: :id, in: :path, type: :string
+
+    let(:id) { blog.id }
+    let(:blog) { Blog.create(title: 'foo', content: 'bar') }
+
+    put 'upload a blog thumbnail' do
+      tags 'Blogs'
+      description 'Upload a thumbnail for specific blog by id'
+      operationId 'uploadThumbnailBlog'
+      consumes 'multipart/form-data'
+      parameter name: :file, :in => :formData, :type => :file, required: true
+
+      response '200', 'blog updated' do
+        let(:file) { Rack::Test::UploadedFile.new(Rails.root.join("spec/fixtures/thumbnail.png")) }
         run_test!
       end
     end
diff --git a/test-app/spec/spec_helper.rb b/test-app/spec/spec_helper.rb
index 8f698be..d20f071 100644
--- a/test-app/spec/spec_helper.rb
+++ b/test-app/spec/spec_helper.rb
@@ -47,6 +47,10 @@ RSpec.configure do |config|
   # triggering implicit auto-inclusion in groups with matching metadata.
   config.shared_context_metadata_behavior = :apply_to_host_groups
 
+  config.after(:suite) do
+    File.delete("#{Rails.root}/tmp/thumbnail.png") if File.file?("#{Rails.root}/tmp/thumbnail.png")
+  end
+
 # The settings below are suggested to provide a good initial experience
 # with RSpec, but feel free to customize to your heart's content.
 =begin
diff --git a/test-app/spec/swagger_helper.rb b/test-app/spec/swagger_helper.rb
index 91d506c..1575a58 100644
--- a/test-app/spec/swagger_helper.rb
+++ b/test-app/spec/swagger_helper.rb
@@ -39,9 +39,10 @@ RSpec.configure do |config|
           properties: {
             id: { type: 'integer' },
             title: { type: 'string' },
-            content: { type: 'string', 'x-nullable': true }
+            content: { type: 'string', 'x-nullable': true },
+            thumbnail: { type: 'string'}
           },
-          required: [ 'id', 'title', 'content' ]
+          required: [ 'id', 'title', 'content', 'thumbnail' ]
         }
       },
       securityDefinitions: {
diff --git a/test-app/swagger/v1/swagger.json b/test-app/swagger/v1/swagger.json
index 60f3ca8..27703bf 100644
--- a/test-app/swagger/v1/swagger.json
+++ b/test-app/swagger/v1/swagger.json
@@ -61,9 +61,6 @@
             "schema": {
               "$ref": "#/definitions/errors_object"
             }
-          },
-          "406": {
-            "description": "unsupported accept header"
           }
         }
       },
@@ -140,15 +137,47 @@
               "application/json": {
                 "id": 1,
                 "title": "Hello world!",
-                "content": "Hello world and hello universe. Thank you all very much!!!"
+                "content": "Hello world and hello universe. Thank you all very much!!!",
+                "thumbnail": "thumbnail.png"
               }
             }
           },
           "404": {
             "description": "blog not found"
-          },
-          "406": {
-            "description": "unsupported accept header"
+          }
+        }
+      }
+    },
+    "/blogs/{id}/upload": {
+      "parameters": [
+        {
+          "name": "id",
+          "in": "path",
+          "type": "string",
+          "required": true
+        }
+      ],
+      "put": {
+        "summary": "upload a blog thumbnail",
+        "tags": [
+          "Blogs"
+        ],
+        "description": "Upload a thumbnail for specific blog by id",
+        "operationId": "uploadThumbnailBlog",
+        "consumes": [
+          "multipart/form-data"
+        ],
+        "parameters": [
+          {
+            "name": "file",
+            "in": "formData",
+            "type": "file",
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "blog updated"
           }
         }
       }
@@ -184,12 +213,16 @@
         "content": {
           "type": "string",
           "x-nullable": true
+        },
+        "thumbnail": {
+          "type": "string"
         }
       },
       "required": [
         "id",
         "title",
-        "content"
+        "content",
+        "thumbnail"
       ]
     }
   },