Merge branch 'swagger_driven_tests'

Gemfile

@@ -13,6 +13,7 @@ gemspec
 # To use a debugger
 # gem 'debugger', group: [:development, :test]
 
+gem 'sqlite3'
 gem 'pry'
 gem 'rspec-rails'
 gem 'generator_spec'

Gemfile.lock

@@ -105,6 +105,7 @@ GEM
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
+    sqlite3 (1.3.11)
     thor (0.19.1)
     tilt (1.4.1)
     treetop (1.4.15)
@@ -119,4 +120,5 @@ DEPENDENCIES
   generator_spec
   pry
   rspec-rails
+  sqlite3
   swagger_rails!

lib/swagger_rails/testing/test_case_builder.rb

@@ -0,0 +1,115 @@
+module SwaggerRails
+
+  class TestCaseBuilder
+
+    def initialize(path_template, http_method, swagger)
+      @path_template = path_template
+      @http_method = http_method
+      @swagger = swagger
+      @param_values = {}
+    end
+
+    def set(param_values)
+      @param_values.merge!(param_values.stringify_keys)
+    end
+
+    def expect(status)
+      @expected_status = status.to_s
+    end
+
+    def test_data
+      operation = find_operation!
+      parameters = operation['parameters'] || []
+      responses = operation['responses']
+      {
+        path: build_path(parameters),
+        params: build_params(parameters),
+        headers: build_headers(parameters),
+        expected_response: build_expected_response(responses)
+      }
+    end
+
+    private
+
+    def find_operation!
+      keys = [ 'paths', @path_template, @http_method ]
+      operation = find_hash_item!(@swagger, keys)
+      operation || (raise MetadataError.new(keys))
+    end
+
+    def find_hash_item!(hash, keys)
+      item = hash[keys[0]] || (return nil)
+      keys.length == 1 ? item : find_hash_item!(item, keys.drop(1))
+    end
+
+    def build_path(parameters)
+      param_values = param_values_for(parameters, 'path')
+      @path_template.dup.tap do |template|
+        template.prepend(@swagger['basePath'].presence || '')
+        param_values.each { |name, value| template.sub!("\{#{name}\}", value.to_s) }
+      end
+    end
+
+    def build_params(parameters)
+      body_param_values = param_values_for(parameters, 'body')
+      return body_param_values.values.first.to_json if body_param_values.any?
+      param_values_for(parameters, 'query')
+    end
+
+    def build_headers(parameters)
+      param_values_for(parameters, 'header')
+        .merge({
+          'CONTENT_TYPE' => 'application/json',
+          'ACCEPT' => 'application/json'
+        })
+    end
+
+    def build_expected_response(responses)
+      status = @expected_status || responses.keys.find { |k| k.start_with?('2') }
+      response = responses[status] || (raise MetadataError.new('paths', @path_template, @http_method, 'responses', status))
+      {
+        status: status.to_i,
+        body: response_body_for(response)
+      }
+    end
+
+    def param_values_for(parameters, location)
+      applicable_parameters = parameters.select { |p| p['in'] == location }
+      Hash[applicable_parameters.map { |p| [ p['name'], param_value_for(p) ] }]
+    end
+
+    def param_value_for(parameter)
+      return @param_values[parameter['name']] if @param_values.has_key?(parameter['name'])
+      return parameter['default'] unless parameter['in'] == 'body'
+      schema = schema_for(parameter['schema'])
+      schema_example_for(schema)
+    end
+
+    def response_body_for(response)
+      return nil if response['schema'].nil?
+      schema = schema_for(response['schema'])
+      schema_example_for(schema)
+    end
+
+    def schema_for(schema_or_ref)
+      return schema_or_ref if schema_or_ref['$ref'].nil?
+      @swagger['definitions'][schema_or_ref['$ref'].sub('#/definitions/', '')]
+    end
+
+    def schema_example_for(schema)
+      return schema['example'] if schema['example'].present?
+      # If an array, try construct from the item example
+      if schema['type'] == 'array' && schema['item'].present?
+        item_schema = schema_for(schema['item'])
+        return [ schema_example_for(item_schema) ]
+      end
+    end
+  end
+
+  class MetadataError < StandardError
+    def initialize(*path_keys)
+      path = path_keys.map { |key| "['#{key}']" }.join('')
+      super("Swagger document is missing expected metadata at #{path}")
+    end
+  end
+end

lib/swagger_rails/testing/test_helpers.rb

@@ -0,0 +1,34 @@
+require 'swagger_rails/testing/test_visitor'
+
+module SwaggerRails
+  module TestHelpers
+
+    def self.included(klass)
+      klass.extend(ClassMethods)
+    end
+
+    module ClassMethods
+      attr_reader :test_visitor
+
+      def swagger_doc(swagger_doc)
+        file_path = File.join(Rails.root, 'config/swagger', swagger_doc)
+        @swagger = JSON.parse(File.read(file_path))
+        @test_visitor = SwaggerRails::TestVisitor.new(@swagger)
+      end
+
+      def swagger_test_all
+        @swagger['paths'].each do |path, path_item| 
+          path_item.keys.each do |method| 
+            test "#{path} #{method}" do
+              swagger_test path, method
+            end
+          end
+        end
+      end
+    end
+
+    def swagger_test(path, method, &block)
+      self.class.test_visitor.run_test(path, method, self, &block)
+    end
+  end
+end

lib/swagger_rails/testing/test_visitor.rb

@@ -0,0 +1,27 @@
+require 'swagger_rails/testing/test_case_builder'
+
+module SwaggerRails
+
+  class TestVisitor
+
+    def initialize(swagger)
+      @swagger = swagger
+    end
+
+    def run_test(path_template, http_method, test, &block)
+      builder = TestCaseBuilder.new(path_template, http_method, @swagger)
+      builder.instance_exec(&block) if block_given?
+      test_data = builder.test_data
+
+      test.send(http_method,
+        test_data[:path],
+        test_data[:params],
+        test_data[:headers]
+      )
+
+      test.assert_response(test_data[:expected_response][:status])
+      test.assert_equal(test_data[:expected_response][:body], JSON.parse(test.response.body))
+    end
+  end
+end
+

spec/dummy/.rspec

@@ -0,0 +1,2 @@
+--color
+--require spec_helper

spec/dummy/app/controllers/application_controller.rb

@@ -2,4 +2,6 @@ class ApplicationController < ActionController::Base
   # Prevent CSRF attacks by raising an exception.
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery with: :exception
+
+  wrap_parameters format: [ :json ]
 end

spec/dummy/app/controllers/blogs_controller.rb

@@ -0,0 +1,22 @@
+class BlogsController < ApplicationController
+  wrap_parameters Blog
+  respond_to :json
+
+  # POST /blogs
+  def create
+    @blog = Blog.create(params[:blog])
+    respond_with @blog
+  end
+
+  # GET /blogs
+  def index
+    @blogs = Blog.all
+    respond_with @blogs
+  end
+
+  # GET /blogs/1
+  def show
+    @blog = Blog.find(params[:id])
+    respond_with @blog
+  end
+end

spec/dummy/app/models/blog.rb

@@ -0,0 +1,10 @@
+class Blog < ActiveRecord::Base
+  attr_accessible :content, :title
+
+  def as_json(options)
+    {
+      title: title,
+      content: content
+    }
+  end
+end

spec/dummy/app/views/layouts/application.html.erb

@@ -1,14 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-  <title>Dummy</title>
-  <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
-  <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
-  <%= csrf_meta_tags %>
-</head>
-<body>
-
-<%= yield %>
-
-</body>
-</html>

spec/dummy/config/application.rb

@@ -1,12 +1,12 @@
 require File.expand_path('../boot', __FILE__)
 
 # Pick the frameworks you want:
-# require "active_record/railtie"
+require "active_record/railtie"
 require "action_controller/railtie"
 require "action_mailer/railtie"
 require "action_view/railtie"
 require "sprockets/railtie"
-# require "rails/test_unit/railtie"
+require "rails/test_unit/railtie"
 
 Bundler.require(*Rails.groups)
 require "swagger_rails"

spec/dummy/config/database.yml

@@ -0,0 +1,25 @@
+#SQLite version 3.x
+#   gem install sqlite3
+#
+#   Ensure the SQLite 3 gem is defined in your Gemfile
+#   gem 'sqlite3'
+development:
+  adapter: sqlite3
+  database: db/development.sqlite3
+  pool: 5
+  timeout: 5000
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+test:
+  adapter: sqlite3
+  database: db/test.sqlite3
+  pool: 5
+  timeout: 5000
+
+production:
+  adapter: sqlite3
+  database: db/production.sqlite3
+  pool: 5
+  timeout: 5000

spec/dummy/config/routes.rb

@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
-  mount SwaggerRails::Engine => '/api-docs'
+  resources :blogs, defaults: { :format => :json }
 
+  mount SwaggerRails::Engine => '/api-docs'
 end

spec/dummy/config/swagger/v1/swagger.json

@@ -2,43 +2,120 @@
     "swagger": "2.0",
     "info": {
         "version": "0.0.0",
-        "title": "[Enter a description for your API here]",
+        "title": "Dummy app for testing swagger_rails"
-        "description": "The docs below are powered by the default swagger.json that gets installed with swagger_rails. You'll need to update it to describe your API. See here for the complete swagger spec - https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md"
     },
     "paths": {
-        "/a/sample/resource": {
+        "/blogs": {
             "post": {
-                "tags": [
+                "description": "Creates a new Blog",
-                  "a/sample/resource"
-                ],
-                "description": "Create a new sample resource",
                 "parameters": [
                     {
-                        "name": "body",
+                        "name": "X-Forwarded-For",
+                        "in": "header",
+                        "type": "string",
+                        "default": "client1"
+                    },
+                    {
+                        "name": "blog",
                         "in": "body",
                         "schema": {
-                            "$ref": "#/definitions/CreateSampleResource"
+                            "$ref": "#/definitions/Blog"
                         }
                     }
                 ],
+                "responses": {
+                    "201": {
+                        "description": "Created",
+                        "schema": {
+                            "$ref": "#/definitions/Blog"
+                        }
+                    },
+                    "400": {
+                        "description": "Invalid Request",
+                        "schema": {
+                            "$ref": "#/definitions/RequestError"
+                        }
+                    }
+                }
+            },
+            "get": {
+                "description": "Searches Bloggs",
+                "parameters": [
+                    {
+                        "name": "published",
+                        "in": "query",
+                        "type": "boolean",
+                        "default": "true"
+                    },
+                    {
+                        "name": "keywords",
+                        "in": "query",
+                        "type": "string",
+                        "default": "Ruby on Rails"
+                    }
+                ],
                 "responses": {
                     "200": {
-                        "description": "Ok"
+                        "description": "Ok",
+                        "schema": {
+                            "type": "array",
+                            "item": {
+                              "$ref": "#/definitions/Blog"
+                            }
+                        }
+                    }
+                }
+            }
+
+        },
+        "/blogs/{id}": {
+            "get": {
+                "description": "Retrieves a specific Blog by unique ID",
+                "parameters": [
+                    {
+                        "name": "id",
+                        "in": "path",
+                        "type": "string",
+                        "default": "123"
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Ok",
+                        "schema": {
+                            "$ref": "#/definitions/Blog"
+                        }
                     }
                 }
             }
         }
     },
     "definitions": {
-        "CreateSampleResource": {
+        "Blog": {
             "properties": {
-                "name": {
+                "title": {
                     "type": "string"
                 },
-                "date_time": {
+                "content": {
                     "type": "string",
                     "format": "date-time"
                 }
+            },
+            "example": {
+                "title": "Test Blog",
+                "content": "Hello World"
+            }
+        },
+        "RequestError": {
+            "type": "object",
+            "additionalProperties": {
+              "type": "array",
+              "item": {
+                "type": "string"
+              }
+            },
+            "example": {
+                "title": [ "is required" ]
             }
         }
     }

spec/dummy/db/migrate/20160218212104_create_blogs.rb

@@ -0,0 +1,10 @@
+class CreateBlogs < ActiveRecord::Migration
+  def change
+    create_table :blogs do |t|
+      t.string :title
+      t.text :content
+
+      t.timestamps
+    end
+  end
+end

spec/dummy/db/schema.rb

@@ -0,0 +1,23 @@
+# encoding: UTF-8
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended to check this file into your version control system.
+
+ActiveRecord::Schema.define(:version => 20160218212104) do
+
+  create_table "blogs", :force => true do |t|
+    t.string   "title"
+    t.text     "content"
+    t.datetime "created_at", :null => false
+    t.datetime "updated_at", :null => false
+  end
+
+end

spec/dummy/spec/integration/v1_contract_spec.rb

@@ -0,0 +1,19 @@
+require 'rails_helper'
+require 'swagger_rails/testing/test_helpers'
+
+describe 'V1 Contract' do
+  include SwaggerRails::TestHelpers
+  swagger_doc 'v1/swagger.json'
+
+  # TODO: improve DSL
+
+  it 'exposes an API for managing blogs' do
+    swagger_test '/blogs', 'post'
+
+    swagger_test '/blogs', 'get'
+
+    swagger_test '/blogs/{id}', 'get' do
+      set id: Blog.last!.id  
+    end
+  end
+end

spec/dummy/spec/rails_helper.rb

@@ -0,0 +1,53 @@
+# This file is copied to spec/ when you run 'rails generate rspec:install'
+ENV['RAILS_ENV'] ||= 'test'
+require File.expand_path('../../config/environment', __FILE__)
+# Prevent database truncation if the environment is production
+abort("The Rails environment is running in production mode!") if Rails.env.production?
+require 'spec_helper'
+require 'rspec/rails'
+# Add additional requires below this line. Rails is not loaded until this point!
+
+# Requires supporting ruby files with custom matchers and macros, etc, in
+# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
+# run as spec files by default. This means that files in spec/support that end
+# in _spec.rb will both be required and run as specs, causing the specs to be
+# run twice. It is recommended that you do not name files matching this glob to
+# end with _spec.rb. You can configure this pattern with the --pattern
+# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
+#
+# The following line is provided for convenience purposes. It has the downside
+# of increasing the boot-up time by auto-requiring all files in the support
+# directory. Alternatively, in the individual `*_spec.rb` files, manually
+# require only the support files necessary.
+#
+# Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f }
+
+RSpec.configure do |config|
+  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
+  config.fixture_path = "#{::Rails.root}/spec/fixtures"
+
+  # If you're not using ActiveRecord, or you'd prefer not to run each of your
+  # examples within a transaction, remove the following line or assign false
+  # instead of true.
+  config.use_transactional_fixtures = true
+
+  # RSpec Rails can automatically mix in different behaviours to your tests
+  # based on their file location, for example enabling you to call `get` and
+  # `post` in specs under `spec/controllers`.
+  #
+  # You can disable this behaviour by removing the line below, and instead
+  # explicitly tag your specs with their type, e.g.:
+  #
+  #     RSpec.describe UsersController, :type => :controller do
+  #       # ...
+  #     end
+  #
+  # The different available types are documented in the features, such as in
+  # https://relishapp.com/rspec/rspec-rails/docs
+  config.infer_spec_type_from_file_location!
+
+  # Filter lines from Rails gems in backtraces.
+  config.filter_rails_from_backtrace!
+  # arbitrary gems may also be filtered via:
+  # config.filter_gems_from_backtrace("gem name")
+end

spec/dummy/spec/spec_helper.rb

@@ -0,0 +1,92 @@
+# This file was generated by the `rails generate rspec:install` command. Conventionally, all
+# specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
+# The generated `.rspec` file contains `--require spec_helper` which will cause
+# this file to always be loaded, without a need to explicitly require it in any
+# files.
+#
+# Given that it is always loaded, you are encouraged to keep this file as
+# light-weight as possible. Requiring heavyweight dependencies from this file
+# will add to the boot time of your test suite on EVERY test run, even for an
+# individual file that may not need all of that loaded. Instead, consider making
+# a separate helper file that requires the additional dependencies and performs
+# the additional setup, and require it from the spec files that actually need
+# it.
+#
+# The `.rspec` file also contains a few flags that are not defaults but that
+# users commonly want.
+#
+# See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
+RSpec.configure do |config|
+  # rspec-expectations config goes here. You can use an alternate
+  # assertion/expectation library such as wrong or the stdlib/minitest
+  # assertions if you prefer.
+  config.expect_with :rspec do |expectations|
+    # This option will default to `true` in RSpec 4. It makes the `description`
+    # and `failure_message` of custom matchers include text for helper methods
+    # defined using `chain`, e.g.:
+    #     be_bigger_than(2).and_smaller_than(4).description
+    #     # => "be bigger than 2 and smaller than 4"
+    # ...rather than:
+    #     # => "be bigger than 2"
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  # rspec-mocks config goes here. You can use an alternate test double
+  # library (such as bogus or mocha) by changing the `mock_with` option here.
+  config.mock_with :rspec do |mocks|
+    # Prevents you from mocking or stubbing a method that does not exist on
+    # a real object. This is generally recommended, and will default to
+    # `true` in RSpec 4.
+    mocks.verify_partial_doubles = true
+  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
+  # These two settings work together to allow you to limit a spec run
+  # to individual examples or groups you care about by tagging them with
+  # `:focus` metadata. When nothing is tagged with `:focus`, all examples
+  # get run.
+  config.filter_run :focus
+  config.run_all_when_everything_filtered = true
+
+  # Allows RSpec to persist some state between runs in order to support
+  # the `--only-failures` and `--next-failure` CLI options. We recommend
+  # you configure your source control system to ignore this file.
+  config.example_status_persistence_file_path = "spec/examples.txt"
+
+  # Limits the available syntax to the non-monkey patched syntax that is
+  # recommended. For more details, see:
+  #   - http://rspec.info/blog/2012/06/rspecs-new-expectation-syntax/
+  #   - http://www.teaisaweso.me/blog/2013/05/27/rspecs-new-message-expectation-syntax/
+  #   - http://rspec.info/blog/2014/05/notable-changes-in-rspec-3/#zero-monkey-patching-mode
+  config.disable_monkey_patching!
+
+  # Many RSpec users commonly either run the entire suite or an individual
+  # file, and it's useful to allow more verbose output when running an
+  # individual spec file.
+  if config.files_to_run.one?
+    # Use the documentation formatter for detailed output,
+    # unless a formatter has already been configured
+    # (e.g. via a command-line flag).
+    config.default_formatter = 'doc'
+  end
+
+  # Print the 10 slowest examples and example groups at the
+  # end of the spec run, to help surface which specs are running
+  # particularly slow.
+  config.profile_examples = 10
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = :random
+
+  # Seed global randomization in this process using the `--seed` CLI option.
+  # Setting this allows you to use `--seed` to deterministically reproduce
+  # test failures related to randomization by passing the same `--seed` value
+  # as the one that triggered the failure.
+  Kernel.srand config.seed
+=end
+end

spec/dummy/test/integration/v1_contract_test.rb

@@ -0,0 +1,19 @@
+require 'test_helper'
+require 'swagger_rails/testing/test_helpers'
+
+class V1ContractTest < ActionDispatch::IntegrationTest
+  include SwaggerRails::TestHelpers
+  swagger_doc 'v1/swagger.json'
+
+  # TODO: improve DSL
+
+  test 'Blogs API' do
+    swagger_test '/blogs', 'post'
+
+    swagger_test '/blogs', 'get'
+
+    swagger_test '/blogs/{id}', 'get' do
+      set id: Blog.last!.id
+    end
+  end
+end

spec/dummy/test/test_helper.rb

@@ -0,0 +1,7 @@
+ENV["RAILS_ENV"] = "test"
+require File.expand_path('../../config/environment', __FILE__)
+require 'rails/test_help'
+
+class ActiveSupport::TestCase
+  # Add more helper methods to be used by all tests here...
+end

spec/testing/test_case_builder_spec.rb

@@ -0,0 +1,139 @@
+require 'rails_helper'
+require 'swagger_rails/testing/test_case_builder'
+
+module SwaggerRails
+
+  describe TestCaseBuilder do
+    subject { described_class.new(path, method, swagger) }
+    let(:swagger) do
+      file_path = File.join(Rails.root, 'config/swagger', 'v1/swagger.json')
+      JSON.parse(File.read(file_path))
+    end
+
+    describe '#test_data' do
+      let(:test_data) { subject.test_data }
+
+      context 'swagger includes basePath' do
+        before { swagger['basePath'] = '/foobar' }
+        let(:path) { '/blogs' }
+        let(:method) { 'post' }
+
+        it 'includes a path prefixed with basePath' do
+          expect(test_data[:path]).to eq('/foobar/blogs')
+        end
+      end
+
+      context 'operation has path params' do
+        let(:path) { '/blogs/{id}' }
+        let(:method) { 'get' }
+
+        context 'by default' do
+          it "includes a path built from 'default' values" do
+            expect(test_data[:path]).to eq('/blogs/123')
+          end
+        end
+
+        context 'values explicitly set' do
+          before { subject.set id: '456' }
+          it 'includes a path built from set values' do
+            expect(test_data[:path]).to eq('/blogs/456')
+          end
+        end
+      end
+
+      context 'operation has query params' do
+        let(:path) { '/blogs' }
+        let(:method) { 'get' }
+
+        context 'by default' do
+          it "includes params built from 'default' values" do
+            expect(test_data[:params]).to eq({ 'published' => 'true', 'keywords' => 'Ruby on Rails' })
+          end
+        end
+
+        context 'values explicitly set' do
+          before { subject.set keywords: 'Java' }
+          it 'includes params build from set values' do
+            expect(test_data[:params]).to eq({ 'published' => 'true', 'keywords' => 'Java' })
+          end
+        end
+      end
+
+      context 'operation has body param' do
+        let(:path) { '/blogs' }
+        let(:method) { 'post' }
+
+        context 'by default' do
+          it "includes params string based on schema 'example'" do
+            expect(test_data[:params]).to eq({ 'title' => 'Test Blog', 'content' => 'Hello World' }.to_json)
+          end
+        end
+
+        context 'values explicitly set' do
+          before { subject.set blog: { 'title' => 'foobar' } }
+          it 'includes params string based on set value' do
+            expect(test_data[:params]).to eq({ 'title' => 'foobar' }.to_json)
+          end
+        end
+      end
+
+      context 'operation has header params' do
+        let(:path) { '/blogs' }
+        let(:method) { 'post' }
+
+        context 'by default' do
+          it "includes headers built from 'default' values" do
+            expect(test_data[:headers]).to eq({
+              'X-Forwarded-For' => 'client1',
+              'CONTENT_TYPE' => 'application/json',
+              'ACCEPT' => 'application/json'
+            })
+          end
+        end
+
+        context 'values explicitly params' do
+          before { subject.set 'X-Forwarded-For' => '192.168.1.1' }
+          it 'includes headers built from set values' do
+            expect(test_data[:headers]).to eq({
+              'X-Forwarded-For' => '192.168.1.1',
+              'CONTENT_TYPE' => 'application/json',
+              'ACCEPT' => 'application/json'
+            })
+          end
+        end
+      end
+
+      context 'operation returns an object' do
+        let(:path) { '/blogs' }
+        let(:method) { 'post' }
+
+        context 'by default' do
+          it "includes expected_response based on spec'd 2xx status" do
+            expect(test_data[:expected_response][:status]).to eq(201)
+            expect(test_data[:expected_response][:body]).to eq({ 'title' => 'Test Blog', 'content' => 'Hello World' })
+          end
+        end
+
+        context 'expected status explicitly set' do
+          before { subject.expect 400 }
+          it "includes expected_response based on set status" do
+            expect(test_data[:expected_response][:status]).to eq(400)
+            expect(test_data[:expected_response][:body]).to eq({ 'title' =>  [ 'is required' ] })
+          end
+        end
+      end
+
+      context 'operation returns an array' do
+        let(:path) { '/blogs' }
+        let(:method) { 'get' }
+
+        context 'by default' do
+          it "includes expected_response based on spec'd 2xx status" do
+            expect(test_data[:expected_response][:status]).to eq(200)
+            expect(test_data[:expected_response][:body]).to eq([ { 'title' => 'Test Blog', 'content' => 'Hello World' } ])
+          end
+        end
+      end
+    end
+  end
+end

spec/testing/test_visitor_spec.rb

@@ -0,0 +1,79 @@
+require 'rails_helper'
+require 'swagger_rails/testing/test_visitor'
+
+module SwaggerRails
+
+  describe TestVisitor do
+    subject { described_class.new(swagger) }
+    let(:swagger) do
+      file_path = File.join(Rails.root, 'config/swagger', 'v1/swagger.json')
+      JSON.parse(File.read(file_path))
+    end
+    let(:test) { spy('test') }
+
+    describe '#run_test' do
+      before do
+        allow(test).to receive(:response).and_return(OpenStruct.new(body: "{}"))
+      end
+
+      context 'by default' do
+        before { subject.run_test('/blogs', 'post', test) }
+
+        it "submits request based on 'default' and 'example' param values" do
+          expect(test).to have_received(:post).with(
+            '/blogs',
+            { 'title' => 'Test Blog', 'content' => 'Hello World' }.to_json,
+            { 'X-Forwarded-For' => 'client1', 'CONTENT_TYPE' => 'application/json', 'ACCEPT' => 'application/json' }
+          )
+        end
+
+        it "asserts response matches spec'd 2xx status" do
+          expect(test).to have_received(:assert_response).with(201)
+        end
+
+        it "asserts response body matches schema 'example' for 2xx status" do
+          expect(test).to have_received(:assert_equal).with(
+            { 'title' => 'Test Blog', 'content' => 'Hello World' },
+            {}
+          )
+        end
+      end
+
+      context 'param values explicitly provided' do
+        before do
+          subject.run_test('/blogs', 'post', test) do
+            set blog: { 'title' => 'foobar' }
+            set 'X-Forwarded-For' => '192.168.1.1'
+          end
+        end
+
+        it 'submits a request based on provided param values' do
+          expect(test).to have_received(:post).with(
+            '/blogs',
+            { 'title' => 'foobar' }.to_json,
+            { 'X-Forwarded-For' => '192.168.1.1', 'CONTENT_TYPE' => 'application/json', 'ACCEPT' => 'application/json' }
+          )
+        end
+      end
+
+      context 'expected status explicitly set' do
+        before do
+          subject.run_test('/blogs', 'post', test) do
+            expect 400
+          end
+        end
+
+        it "asserts response matches set status" do
+          expect(test).to have_received(:assert_response).with(400)
+        end
+
+        it "asserts response body matches schema 'example' for set status" do
+          expect(test).to have_received(:assert_equal).with(
+            { 'title' => [ 'is required' ] },
+            {}
+          )
+        end
+      end
+    end
+  end
+end