test/support/assert_responses.rb


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module AssertResponses

  # response that works with different TestCases:
  # ActionController::TestCase has @response
  # ActionDispatch::IntegrationTest has @response
  # Rack::Test::Methods defines last_response
  def get_response
    @response || last_response
  end

  def assert_attachement_filename(name)
    assert_equal %Q(attachment; filename="#{name}"),
      get_response.headers["Content-Disposition"]
  end

  def json_response
    response = JSON.parse(get_response.body)
    response.respond_to?(:with_indifferent_access) ?
      response.with_indifferent_access :
      response
  end

  def assert_json_response(object)
    assert_equal 'application/json',
      get_response.content_type.to_s.split(';').first
    if object.is_a? Hash
      object.stringify_keys! if object.respond_to? :stringify_keys!
      assert_equal object, json_response
    else
      assert_equal object.to_json, get_response.body
    end
  end

  def assert_json_error(object)
    object.stringify_keys! if object.respond_to? :stringify_keys!
    assert_json_response :errors => object
  end
end

class ::ActionController::TestCase
  include AssertResponses
end

class ::ActionDispatch::IntegrationTest
  include AssertResponses
end